97f734fde2
1/ ia64 appear to have __clone2, not clone. 2/ Including "++" in the arg to a macro is a bad thing to do. Signed-off-by: NeilBrown <neilb@suse.de>
3415 lines
85 KiB
C
3415 lines
85 KiB
C
/*
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* mdadm - Intel(R) Matrix Storage Manager Support
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*
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* Copyright (C) 2002-2008 Intel Corporation
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#define HAVE_STDINT_H 1
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#include "mdadm.h"
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#include "mdmon.h"
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#include "sha1.h"
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#include <values.h>
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#include <scsi/sg.h>
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#include <ctype.h>
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/* MPB == Metadata Parameter Block */
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#define MPB_SIGNATURE "Intel Raid ISM Cfg Sig. "
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#define MPB_SIG_LEN (strlen(MPB_SIGNATURE))
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#define MPB_VERSION_RAID0 "1.0.00"
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#define MPB_VERSION_RAID1 "1.1.00"
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#define MPB_VERSION_RAID5 "1.2.02"
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#define MAX_SIGNATURE_LENGTH 32
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#define MAX_RAID_SERIAL_LEN 16
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#define MPB_SECTOR_CNT 418
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#define IMSM_RESERVED_SECTORS 4096
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/* Disk configuration info. */
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#define IMSM_MAX_DEVICES 255
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struct imsm_disk {
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__u8 serial[MAX_RAID_SERIAL_LEN];/* 0xD8 - 0xE7 ascii serial number */
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__u32 total_blocks; /* 0xE8 - 0xEB total blocks */
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__u32 scsi_id; /* 0xEC - 0xEF scsi ID */
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__u32 status; /* 0xF0 - 0xF3 */
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#define SPARE_DISK 0x01 /* Spare */
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#define CONFIGURED_DISK 0x02 /* Member of some RaidDev */
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#define FAILED_DISK 0x04 /* Permanent failure */
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#define USABLE_DISK 0x08 /* Fully usable unless FAILED_DISK is set */
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#define IMSM_DISK_FILLERS 5
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__u32 filler[IMSM_DISK_FILLERS]; /* 0xF4 - 0x107 MPB_DISK_FILLERS for future expansion */
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};
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/* RAID map configuration infos. */
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struct imsm_map {
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__u32 pba_of_lba0; /* start address of partition */
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__u32 blocks_per_member;/* blocks per member */
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__u32 num_data_stripes; /* number of data stripes */
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__u16 blocks_per_strip;
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__u8 map_state; /* Normal, Uninitialized, Degraded, Failed */
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#define IMSM_T_STATE_NORMAL 0
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#define IMSM_T_STATE_UNINITIALIZED 1
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#define IMSM_T_STATE_DEGRADED 2 /* FIXME: is this correct? */
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#define IMSM_T_STATE_FAILED 3 /* FIXME: is this correct? */
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__u8 raid_level;
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#define IMSM_T_RAID0 0
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#define IMSM_T_RAID1 1
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#define IMSM_T_RAID5 5 /* since metadata version 1.2.02 ? */
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__u8 num_members; /* number of member disks */
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__u8 reserved[3];
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__u32 filler[7]; /* expansion area */
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#define IMSM_ORD_REBUILD (1 << 24)
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__u32 disk_ord_tbl[1]; /* disk_ord_tbl[num_members],
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* top byte contains some flags
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*/
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} __attribute__ ((packed));
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struct imsm_vol {
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__u32 curr_migr_unit;
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__u32 reserved;
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__u8 migr_state; /* Normal or Migrating */
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__u8 migr_type; /* Initializing, Rebuilding, ... */
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__u8 dirty;
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__u8 fill[1];
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__u32 filler[5];
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struct imsm_map map[1];
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/* here comes another one if migr_state */
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} __attribute__ ((packed));
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struct imsm_dev {
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__u8 volume[MAX_RAID_SERIAL_LEN];
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__u32 size_low;
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__u32 size_high;
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__u32 status; /* Persistent RaidDev status */
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__u32 reserved_blocks; /* Reserved blocks at beginning of volume */
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#define IMSM_DEV_FILLERS 12
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__u32 filler[IMSM_DEV_FILLERS];
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struct imsm_vol vol;
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} __attribute__ ((packed));
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struct imsm_super {
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__u8 sig[MAX_SIGNATURE_LENGTH]; /* 0x00 - 0x1F */
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__u32 check_sum; /* 0x20 - 0x23 MPB Checksum */
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__u32 mpb_size; /* 0x24 - 0x27 Size of MPB */
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__u32 family_num; /* 0x28 - 0x2B Checksum from first time this config was written */
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__u32 generation_num; /* 0x2C - 0x2F Incremented each time this array's MPB is written */
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__u32 error_log_size; /* 0x30 - 0x33 in bytes */
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__u32 attributes; /* 0x34 - 0x37 */
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__u8 num_disks; /* 0x38 Number of configured disks */
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__u8 num_raid_devs; /* 0x39 Number of configured volumes */
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__u8 error_log_pos; /* 0x3A */
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__u8 fill[1]; /* 0x3B */
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__u32 cache_size; /* 0x3c - 0x40 in mb */
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__u32 orig_family_num; /* 0x40 - 0x43 original family num */
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__u32 pwr_cycle_count; /* 0x44 - 0x47 simulated power cycle count for array */
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__u32 bbm_log_size; /* 0x48 - 0x4B - size of bad Block Mgmt Log in bytes */
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#define IMSM_FILLERS 35
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__u32 filler[IMSM_FILLERS]; /* 0x4C - 0xD7 RAID_MPB_FILLERS */
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struct imsm_disk disk[1]; /* 0xD8 diskTbl[numDisks] */
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/* here comes imsm_dev[num_raid_devs] */
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/* here comes BBM logs */
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} __attribute__ ((packed));
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#define BBM_LOG_MAX_ENTRIES 254
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struct bbm_log_entry {
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__u64 defective_block_start;
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#define UNREADABLE 0xFFFFFFFF
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__u32 spare_block_offset;
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__u16 remapped_marked_count;
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__u16 disk_ordinal;
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} __attribute__ ((__packed__));
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struct bbm_log {
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__u32 signature; /* 0xABADB10C */
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__u32 entry_count;
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__u32 reserved_spare_block_count; /* 0 */
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__u32 reserved; /* 0xFFFF */
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__u64 first_spare_lba;
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struct bbm_log_entry mapped_block_entries[BBM_LOG_MAX_ENTRIES];
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} __attribute__ ((__packed__));
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#ifndef MDASSEMBLE
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static char *map_state_str[] = { "normal", "uninitialized", "degraded", "failed" };
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#endif
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static unsigned int sector_count(__u32 bytes)
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{
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return ((bytes + (512-1)) & (~(512-1))) / 512;
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}
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static unsigned int mpb_sectors(struct imsm_super *mpb)
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{
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return sector_count(__le32_to_cpu(mpb->mpb_size));
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}
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/* internal representation of IMSM metadata */
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struct intel_super {
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union {
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void *buf; /* O_DIRECT buffer for reading/writing metadata */
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struct imsm_super *anchor; /* immovable parameters */
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};
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size_t len; /* size of the 'buf' allocation */
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void *next_buf; /* for realloc'ing buf from the manager */
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size_t next_len;
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int updates_pending; /* count of pending updates for mdmon */
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int creating_imsm; /* flag to indicate container creation */
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int current_vol; /* index of raid device undergoing creation */
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#define IMSM_MAX_RAID_DEVS 2
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struct imsm_dev *dev_tbl[IMSM_MAX_RAID_DEVS];
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struct dl {
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struct dl *next;
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int index;
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__u8 serial[MAX_RAID_SERIAL_LEN];
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int major, minor;
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char *devname;
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struct imsm_disk disk;
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int fd;
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} *disks;
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struct dl *add; /* list of disks to add while mdmon active */
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struct dl *missing; /* disks removed while we weren't looking */
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struct bbm_log *bbm_log;
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};
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struct extent {
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unsigned long long start, size;
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};
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/* definition of messages passed to imsm_process_update */
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enum imsm_update_type {
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update_activate_spare,
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update_create_array,
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update_add_disk,
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};
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struct imsm_update_activate_spare {
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enum imsm_update_type type;
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struct dl *dl;
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int slot;
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int array;
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struct imsm_update_activate_spare *next;
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};
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struct imsm_update_create_array {
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enum imsm_update_type type;
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int dev_idx;
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struct imsm_dev dev;
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};
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struct imsm_update_add_disk {
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enum imsm_update_type type;
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};
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static struct supertype *match_metadata_desc_imsm(char *arg)
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{
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struct supertype *st;
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if (strcmp(arg, "imsm") != 0 &&
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strcmp(arg, "default") != 0
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)
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return NULL;
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st = malloc(sizeof(*st));
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memset(st, 0, sizeof(*st));
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st->ss = &super_imsm;
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st->max_devs = IMSM_MAX_DEVICES;
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st->minor_version = 0;
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st->sb = NULL;
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return st;
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}
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#ifndef MDASSEMBLE
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static __u8 *get_imsm_version(struct imsm_super *mpb)
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{
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return &mpb->sig[MPB_SIG_LEN];
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}
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#endif
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/* retrieve a disk directly from the anchor when the anchor is known to be
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* up-to-date, currently only at load time
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*/
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static struct imsm_disk *__get_imsm_disk(struct imsm_super *mpb, __u8 index)
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{
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if (index >= mpb->num_disks)
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return NULL;
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return &mpb->disk[index];
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}
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#ifndef MDASSEMBLE
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/* retrieve a disk from the parsed metadata */
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static struct imsm_disk *get_imsm_disk(struct intel_super *super, __u8 index)
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{
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struct dl *d;
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for (d = super->disks; d; d = d->next)
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if (d->index == index)
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return &d->disk;
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return NULL;
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}
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#endif
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/* generate a checksum directly from the anchor when the anchor is known to be
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* up-to-date, currently only at load or write_super after coalescing
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*/
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static __u32 __gen_imsm_checksum(struct imsm_super *mpb)
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{
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__u32 end = mpb->mpb_size / sizeof(end);
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__u32 *p = (__u32 *) mpb;
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__u32 sum = 0;
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while (end--) {
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sum += __le32_to_cpu(*p);
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p++;
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}
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return sum - __le32_to_cpu(mpb->check_sum);
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}
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static size_t sizeof_imsm_map(struct imsm_map *map)
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{
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return sizeof(struct imsm_map) + sizeof(__u32) * (map->num_members - 1);
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}
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struct imsm_map *get_imsm_map(struct imsm_dev *dev, int second_map)
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{
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struct imsm_map *map = &dev->vol.map[0];
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if (second_map && !dev->vol.migr_state)
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return NULL;
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else if (second_map) {
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void *ptr = map;
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return ptr + sizeof_imsm_map(map);
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} else
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return map;
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}
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/* return the size of the device.
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* migr_state increases the returned size if map[0] were to be duplicated
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*/
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static size_t sizeof_imsm_dev(struct imsm_dev *dev, int migr_state)
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{
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size_t size = sizeof(*dev) - sizeof(struct imsm_map) +
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sizeof_imsm_map(get_imsm_map(dev, 0));
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/* migrating means an additional map */
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if (dev->vol.migr_state)
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size += sizeof_imsm_map(get_imsm_map(dev, 1));
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else if (migr_state)
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size += sizeof_imsm_map(get_imsm_map(dev, 0));
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return size;
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}
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static struct imsm_dev *__get_imsm_dev(struct imsm_super *mpb, __u8 index)
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{
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int offset;
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int i;
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void *_mpb = mpb;
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if (index >= mpb->num_raid_devs)
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return NULL;
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/* devices start after all disks */
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offset = ((void *) &mpb->disk[mpb->num_disks]) - _mpb;
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for (i = 0; i <= index; i++)
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if (i == index)
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return _mpb + offset;
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else
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offset += sizeof_imsm_dev(_mpb + offset, 0);
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return NULL;
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}
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static struct imsm_dev *get_imsm_dev(struct intel_super *super, __u8 index)
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{
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if (index >= super->anchor->num_raid_devs)
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return NULL;
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return super->dev_tbl[index];
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}
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static __u32 get_imsm_ord_tbl_ent(struct imsm_dev *dev, int slot)
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{
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struct imsm_map *map;
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if (dev->vol.migr_state)
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map = get_imsm_map(dev, 1);
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else
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map = get_imsm_map(dev, 0);
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/* top byte identifies disk under rebuild */
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return __le32_to_cpu(map->disk_ord_tbl[slot]);
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}
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#define ord_to_idx(ord) (((ord) << 8) >> 8)
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static __u32 get_imsm_disk_idx(struct imsm_dev *dev, int slot)
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{
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__u32 ord = get_imsm_ord_tbl_ent(dev, slot);
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return ord_to_idx(ord);
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}
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static void set_imsm_ord_tbl_ent(struct imsm_map *map, int slot, __u32 ord)
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{
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map->disk_ord_tbl[slot] = __cpu_to_le32(ord);
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}
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static int get_imsm_raid_level(struct imsm_map *map)
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{
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if (map->raid_level == 1) {
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if (map->num_members == 2)
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return 1;
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else
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return 10;
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}
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return map->raid_level;
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}
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static int cmp_extent(const void *av, const void *bv)
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{
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const struct extent *a = av;
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const struct extent *b = bv;
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if (a->start < b->start)
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return -1;
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if (a->start > b->start)
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return 1;
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return 0;
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}
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static struct extent *get_extents(struct intel_super *super, struct dl *dl)
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{
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/* find a list of used extents on the given physical device */
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struct extent *rv, *e;
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int i, j;
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int memberships = 0;
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__u32 reservation = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
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for (i = 0; i < super->anchor->num_raid_devs; i++) {
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struct imsm_dev *dev = get_imsm_dev(super, i);
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struct imsm_map *map = get_imsm_map(dev, 0);
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for (j = 0; j < map->num_members; j++) {
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__u32 index = get_imsm_disk_idx(dev, j);
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if (index == dl->index)
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memberships++;
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}
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}
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rv = malloc(sizeof(struct extent) * (memberships + 1));
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if (!rv)
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return NULL;
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e = rv;
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for (i = 0; i < super->anchor->num_raid_devs; i++) {
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struct imsm_dev *dev = get_imsm_dev(super, i);
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struct imsm_map *map = get_imsm_map(dev, 0);
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for (j = 0; j < map->num_members; j++) {
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__u32 index = get_imsm_disk_idx(dev, j);
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if (index == dl->index) {
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e->start = __le32_to_cpu(map->pba_of_lba0);
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e->size = __le32_to_cpu(map->blocks_per_member);
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e++;
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}
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}
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}
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qsort(rv, memberships, sizeof(*rv), cmp_extent);
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|
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/* determine the start of the metadata
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* when no raid devices are defined use the default
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* ...otherwise allow the metadata to truncate the value
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* as is the case with older versions of imsm
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*/
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if (memberships) {
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struct extent *last = &rv[memberships - 1];
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__u32 remainder;
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remainder = __le32_to_cpu(dl->disk.total_blocks) -
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(last->start + last->size);
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if (reservation > remainder)
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reservation = remainder;
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}
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e->start = __le32_to_cpu(dl->disk.total_blocks) - reservation;
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e->size = 0;
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return rv;
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}
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|
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/* try to determine how much space is reserved for metadata from
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* the last get_extents() entry, otherwise fallback to the
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* default
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*/
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static __u32 imsm_reserved_sectors(struct intel_super *super, struct dl *dl)
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{
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struct extent *e;
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int i;
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__u32 rv;
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|
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/* for spares just return a minimal reservation which will grow
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* once the spare is picked up by an array
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*/
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if (dl->index == -1)
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return MPB_SECTOR_CNT;
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|
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e = get_extents(super, dl);
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if (!e)
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return MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
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|
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/* scroll to last entry */
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for (i = 0; e[i].size; i++)
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continue;
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rv = __le32_to_cpu(dl->disk.total_blocks) - e[i].start;
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free(e);
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return rv;
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}
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|
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#ifndef MDASSEMBLE
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static void print_imsm_dev(struct imsm_dev *dev, char *uuid, int disk_idx)
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{
|
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__u64 sz;
|
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int slot;
|
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struct imsm_map *map = get_imsm_map(dev, 0);
|
|
__u32 ord;
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|
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printf("\n");
|
|
printf("[%.16s]:\n", dev->volume);
|
|
printf(" UUID : %s\n", uuid);
|
|
printf(" RAID Level : %d\n", get_imsm_raid_level(map));
|
|
printf(" Members : %d\n", map->num_members);
|
|
for (slot = 0; slot < map->num_members; slot++)
|
|
if (disk_idx== get_imsm_disk_idx(dev, slot))
|
|
break;
|
|
if (slot < map->num_members) {
|
|
ord = get_imsm_ord_tbl_ent(dev, slot);
|
|
printf(" This Slot : %d%s\n", slot,
|
|
ord & IMSM_ORD_REBUILD ? " (out-of-sync)" : "");
|
|
} else
|
|
printf(" This Slot : ?\n");
|
|
sz = __le32_to_cpu(dev->size_high);
|
|
sz <<= 32;
|
|
sz += __le32_to_cpu(dev->size_low);
|
|
printf(" Array Size : %llu%s\n", (unsigned long long)sz,
|
|
human_size(sz * 512));
|
|
sz = __le32_to_cpu(map->blocks_per_member);
|
|
printf(" Per Dev Size : %llu%s\n", (unsigned long long)sz,
|
|
human_size(sz * 512));
|
|
printf(" Sector Offset : %u\n",
|
|
__le32_to_cpu(map->pba_of_lba0));
|
|
printf(" Num Stripes : %u\n",
|
|
__le32_to_cpu(map->num_data_stripes));
|
|
printf(" Chunk Size : %u KiB\n",
|
|
__le16_to_cpu(map->blocks_per_strip) / 2);
|
|
printf(" Reserved : %d\n", __le32_to_cpu(dev->reserved_blocks));
|
|
printf(" Migrate State : %s", dev->vol.migr_state ? "migrating" : "idle");
|
|
if (dev->vol.migr_state)
|
|
printf(": %s", dev->vol.migr_type ? "rebuilding" : "initializing");
|
|
printf("\n");
|
|
printf(" Map State : %s", map_state_str[map->map_state]);
|
|
if (dev->vol.migr_state) {
|
|
struct imsm_map *map = get_imsm_map(dev, 1);
|
|
printf(" <-- %s", map_state_str[map->map_state]);
|
|
}
|
|
printf("\n");
|
|
printf(" Dirty State : %s\n", dev->vol.dirty ? "dirty" : "clean");
|
|
}
|
|
|
|
static void print_imsm_disk(struct imsm_super *mpb, int index, __u32 reserved)
|
|
{
|
|
struct imsm_disk *disk = __get_imsm_disk(mpb, index);
|
|
char str[MAX_RAID_SERIAL_LEN + 1];
|
|
__u32 s;
|
|
__u64 sz;
|
|
|
|
if (index < 0)
|
|
return;
|
|
|
|
printf("\n");
|
|
snprintf(str, MAX_RAID_SERIAL_LEN + 1, "%s", disk->serial);
|
|
printf(" Disk%02d Serial : %s\n", index, str);
|
|
s = __le32_to_cpu(disk->status);
|
|
printf(" State :%s%s%s%s\n", s&SPARE_DISK ? " spare" : "",
|
|
s&CONFIGURED_DISK ? " active" : "",
|
|
s&FAILED_DISK ? " failed" : "",
|
|
s&USABLE_DISK ? " usable" : "");
|
|
printf(" Id : %08x\n", __le32_to_cpu(disk->scsi_id));
|
|
sz = __le32_to_cpu(disk->total_blocks) - reserved;
|
|
printf(" Usable Size : %llu%s\n", (unsigned long long)sz,
|
|
human_size(sz * 512));
|
|
}
|
|
|
|
static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info);
|
|
|
|
static void examine_super_imsm(struct supertype *st, char *homehost)
|
|
{
|
|
struct intel_super *super = st->sb;
|
|
struct imsm_super *mpb = super->anchor;
|
|
char str[MAX_SIGNATURE_LENGTH];
|
|
int i;
|
|
struct mdinfo info;
|
|
char nbuf[64];
|
|
__u32 sum;
|
|
__u32 reserved = imsm_reserved_sectors(super, super->disks);
|
|
|
|
|
|
snprintf(str, MPB_SIG_LEN, "%s", mpb->sig);
|
|
printf(" Magic : %s\n", str);
|
|
snprintf(str, strlen(MPB_VERSION_RAID0), "%s", get_imsm_version(mpb));
|
|
printf(" Version : %s\n", get_imsm_version(mpb));
|
|
printf(" Family : %08x\n", __le32_to_cpu(mpb->family_num));
|
|
printf(" Generation : %08x\n", __le32_to_cpu(mpb->generation_num));
|
|
getinfo_super_imsm(st, &info);
|
|
fname_from_uuid(st, &info, nbuf,'-');
|
|
printf(" UUID : %s\n", nbuf + 5);
|
|
sum = __le32_to_cpu(mpb->check_sum);
|
|
printf(" Checksum : %08x %s\n", sum,
|
|
__gen_imsm_checksum(mpb) == sum ? "correct" : "incorrect");
|
|
printf(" MPB Sectors : %d\n", mpb_sectors(mpb));
|
|
printf(" Disks : %d\n", mpb->num_disks);
|
|
printf(" RAID Devices : %d\n", mpb->num_raid_devs);
|
|
print_imsm_disk(mpb, super->disks->index, reserved);
|
|
if (super->bbm_log) {
|
|
struct bbm_log *log = super->bbm_log;
|
|
|
|
printf("\n");
|
|
printf("Bad Block Management Log:\n");
|
|
printf(" Log Size : %d\n", __le32_to_cpu(mpb->bbm_log_size));
|
|
printf(" Signature : %x\n", __le32_to_cpu(log->signature));
|
|
printf(" Entry Count : %d\n", __le32_to_cpu(log->entry_count));
|
|
printf(" Spare Blocks : %d\n", __le32_to_cpu(log->reserved_spare_block_count));
|
|
printf(" First Spare : %llx\n", __le64_to_cpu(log->first_spare_lba));
|
|
}
|
|
for (i = 0; i < mpb->num_raid_devs; i++) {
|
|
struct mdinfo info;
|
|
struct imsm_dev *dev = __get_imsm_dev(mpb, i);
|
|
|
|
super->current_vol = i;
|
|
getinfo_super_imsm(st, &info);
|
|
fname_from_uuid(st, &info, nbuf, '-');
|
|
print_imsm_dev(dev, nbuf + 5, super->disks->index);
|
|
}
|
|
for (i = 0; i < mpb->num_disks; i++) {
|
|
if (i == super->disks->index)
|
|
continue;
|
|
print_imsm_disk(mpb, i, reserved);
|
|
}
|
|
}
|
|
|
|
static void brief_examine_super_imsm(struct supertype *st)
|
|
{
|
|
/* We just write a generic IMSM ARRAY entry */
|
|
struct mdinfo info;
|
|
char nbuf[64];
|
|
char nbuf1[64];
|
|
struct intel_super *super = st->sb;
|
|
int i;
|
|
|
|
if (!super->anchor->num_raid_devs)
|
|
return;
|
|
|
|
getinfo_super_imsm(st, &info);
|
|
fname_from_uuid(st, &info, nbuf,'-');
|
|
printf("ARRAY metadata=imsm auto=md UUID=%s\n", nbuf + 5);
|
|
for (i = 0; i < super->anchor->num_raid_devs; i++) {
|
|
struct imsm_dev *dev = get_imsm_dev(super, i);
|
|
|
|
super->current_vol = i;
|
|
getinfo_super_imsm(st, &info);
|
|
fname_from_uuid(st, &info, nbuf1,'-');
|
|
printf("ARRAY /dev/md/%.16s container=%s\n"
|
|
" member=%d auto=mdp UUID=%s\n",
|
|
dev->volume, nbuf + 5, i, nbuf1 + 5);
|
|
}
|
|
}
|
|
|
|
static void detail_super_imsm(struct supertype *st, char *homehost)
|
|
{
|
|
struct mdinfo info;
|
|
char nbuf[64];
|
|
|
|
getinfo_super_imsm(st, &info);
|
|
fname_from_uuid(st, &info, nbuf,'-');
|
|
printf("\n UUID : %s\n", nbuf + 5);
|
|
}
|
|
|
|
static void brief_detail_super_imsm(struct supertype *st)
|
|
{
|
|
struct mdinfo info;
|
|
char nbuf[64];
|
|
getinfo_super_imsm(st, &info);
|
|
fname_from_uuid(st, &info, nbuf,'-');
|
|
printf(" UUID=%s", nbuf + 5);
|
|
}
|
|
#endif
|
|
|
|
static int match_home_imsm(struct supertype *st, char *homehost)
|
|
{
|
|
printf("%s\n", __FUNCTION__);
|
|
|
|
return -1;
|
|
}
|
|
|
|
static void uuid_from_super_imsm(struct supertype *st, int uuid[4])
|
|
{
|
|
/* The uuid returned here is used for:
|
|
* uuid to put into bitmap file (Create, Grow)
|
|
* uuid for backup header when saving critical section (Grow)
|
|
* comparing uuids when re-adding a device into an array
|
|
* In these cases the uuid required is that of the data-array,
|
|
* not the device-set.
|
|
* uuid to recognise same set when adding a missing device back
|
|
* to an array. This is a uuid for the device-set.
|
|
*
|
|
* For each of these we can make do with a truncated
|
|
* or hashed uuid rather than the original, as long as
|
|
* everyone agrees.
|
|
* In each case the uuid required is that of the data-array,
|
|
* not the device-set.
|
|
*/
|
|
/* imsm does not track uuid's so we synthesis one using sha1 on
|
|
* - The signature (Which is constant for all imsm array, but no matter)
|
|
* - the family_num of the container
|
|
* - the index number of the volume
|
|
* - the 'serial' number of the volume.
|
|
* Hopefully these are all constant.
|
|
*/
|
|
struct intel_super *super = st->sb;
|
|
|
|
char buf[20];
|
|
struct sha1_ctx ctx;
|
|
struct imsm_dev *dev = NULL;
|
|
|
|
sha1_init_ctx(&ctx);
|
|
sha1_process_bytes(super->anchor->sig, MAX_SIGNATURE_LENGTH, &ctx);
|
|
sha1_process_bytes(&super->anchor->family_num, sizeof(__u32), &ctx);
|
|
if (super->current_vol >= 0)
|
|
dev = get_imsm_dev(super, super->current_vol);
|
|
if (dev) {
|
|
__u32 vol = super->current_vol;
|
|
sha1_process_bytes(&vol, sizeof(vol), &ctx);
|
|
sha1_process_bytes(dev->volume, MAX_RAID_SERIAL_LEN, &ctx);
|
|
}
|
|
sha1_finish_ctx(&ctx, buf);
|
|
memcpy(uuid, buf, 4*4);
|
|
}
|
|
|
|
#if 0
|
|
static void
|
|
get_imsm_numerical_version(struct imsm_super *mpb, int *m, int *p)
|
|
{
|
|
__u8 *v = get_imsm_version(mpb);
|
|
__u8 *end = mpb->sig + MAX_SIGNATURE_LENGTH;
|
|
char major[] = { 0, 0, 0 };
|
|
char minor[] = { 0 ,0, 0 };
|
|
char patch[] = { 0, 0, 0 };
|
|
char *ver_parse[] = { major, minor, patch };
|
|
int i, j;
|
|
|
|
i = j = 0;
|
|
while (*v != '\0' && v < end) {
|
|
if (*v != '.' && j < 2)
|
|
ver_parse[i][j++] = *v;
|
|
else {
|
|
i++;
|
|
j = 0;
|
|
}
|
|
v++;
|
|
}
|
|
|
|
*m = strtol(minor, NULL, 0);
|
|
*p = strtol(patch, NULL, 0);
|
|
}
|
|
#endif
|
|
|
|
static int imsm_level_to_layout(int level)
|
|
{
|
|
switch (level) {
|
|
case 0:
|
|
case 1:
|
|
return 0;
|
|
case 5:
|
|
case 6:
|
|
return ALGORITHM_LEFT_ASYMMETRIC;
|
|
case 10:
|
|
return 0x102;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static void getinfo_super_imsm_volume(struct supertype *st, struct mdinfo *info)
|
|
{
|
|
struct intel_super *super = st->sb;
|
|
struct imsm_dev *dev = get_imsm_dev(super, super->current_vol);
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
|
|
info->container_member = super->current_vol;
|
|
info->array.raid_disks = map->num_members;
|
|
info->array.level = get_imsm_raid_level(map);
|
|
info->array.layout = imsm_level_to_layout(info->array.level);
|
|
info->array.md_minor = -1;
|
|
info->array.ctime = 0;
|
|
info->array.utime = 0;
|
|
info->array.chunk_size = __le16_to_cpu(map->blocks_per_strip) << 9;
|
|
info->array.state = !dev->vol.dirty;
|
|
|
|
info->disk.major = 0;
|
|
info->disk.minor = 0;
|
|
|
|
info->data_offset = __le32_to_cpu(map->pba_of_lba0);
|
|
info->component_size = __le32_to_cpu(map->blocks_per_member);
|
|
memset(info->uuid, 0, sizeof(info->uuid));
|
|
|
|
if (map->map_state == IMSM_T_STATE_UNINITIALIZED || dev->vol.dirty)
|
|
info->resync_start = 0;
|
|
else if (dev->vol.migr_state)
|
|
info->resync_start = __le32_to_cpu(dev->vol.curr_migr_unit);
|
|
else
|
|
info->resync_start = ~0ULL;
|
|
|
|
strncpy(info->name, (char *) dev->volume, MAX_RAID_SERIAL_LEN);
|
|
info->name[MAX_RAID_SERIAL_LEN] = 0;
|
|
|
|
info->array.major_version = -1;
|
|
info->array.minor_version = -2;
|
|
sprintf(info->text_version, "/%s/%d",
|
|
devnum2devname(st->container_dev),
|
|
info->container_member);
|
|
info->safe_mode_delay = 4000; /* 4 secs like the Matrix driver */
|
|
uuid_from_super_imsm(st, info->uuid);
|
|
}
|
|
|
|
|
|
static void getinfo_super_imsm(struct supertype *st, struct mdinfo *info)
|
|
{
|
|
struct intel_super *super = st->sb;
|
|
struct imsm_disk *disk;
|
|
__u32 s;
|
|
|
|
if (super->current_vol >= 0) {
|
|
getinfo_super_imsm_volume(st, info);
|
|
return;
|
|
}
|
|
|
|
/* Set raid_disks to zero so that Assemble will always pull in valid
|
|
* spares
|
|
*/
|
|
info->array.raid_disks = 0;
|
|
info->array.level = LEVEL_CONTAINER;
|
|
info->array.layout = 0;
|
|
info->array.md_minor = -1;
|
|
info->array.ctime = 0; /* N/A for imsm */
|
|
info->array.utime = 0;
|
|
info->array.chunk_size = 0;
|
|
|
|
info->disk.major = 0;
|
|
info->disk.minor = 0;
|
|
info->disk.raid_disk = -1;
|
|
info->reshape_active = 0;
|
|
info->array.major_version = -1;
|
|
info->array.minor_version = -2;
|
|
strcpy(info->text_version, "imsm");
|
|
info->safe_mode_delay = 0;
|
|
info->disk.number = -1;
|
|
info->disk.state = 0;
|
|
info->name[0] = 0;
|
|
|
|
if (super->disks) {
|
|
__u32 reserved = imsm_reserved_sectors(super, super->disks);
|
|
|
|
disk = &super->disks->disk;
|
|
info->data_offset = __le32_to_cpu(disk->total_blocks) - reserved;
|
|
info->component_size = reserved;
|
|
s = __le32_to_cpu(disk->status);
|
|
info->disk.state = s & CONFIGURED_DISK ? (1 << MD_DISK_ACTIVE) : 0;
|
|
info->disk.state |= s & FAILED_DISK ? (1 << MD_DISK_FAULTY) : 0;
|
|
info->disk.state |= s & SPARE_DISK ? 0 : (1 << MD_DISK_SYNC);
|
|
}
|
|
|
|
/* only call uuid_from_super_imsm when this disk is part of a populated container,
|
|
* ->compare_super may have updated the 'num_raid_devs' field for spares
|
|
*/
|
|
if (info->disk.state & (1 << MD_DISK_SYNC) || super->anchor->num_raid_devs)
|
|
uuid_from_super_imsm(st, info->uuid);
|
|
else
|
|
memcpy(info->uuid, uuid_match_any, sizeof(int[4]));
|
|
}
|
|
|
|
static int update_super_imsm(struct supertype *st, struct mdinfo *info,
|
|
char *update, char *devname, int verbose,
|
|
int uuid_set, char *homehost)
|
|
{
|
|
/* FIXME */
|
|
|
|
/* For 'assemble' and 'force' we need to return non-zero if any
|
|
* change was made. For others, the return value is ignored.
|
|
* Update options are:
|
|
* force-one : This device looks a bit old but needs to be included,
|
|
* update age info appropriately.
|
|
* assemble: clear any 'faulty' flag to allow this device to
|
|
* be assembled.
|
|
* force-array: Array is degraded but being forced, mark it clean
|
|
* if that will be needed to assemble it.
|
|
*
|
|
* newdev: not used ????
|
|
* grow: Array has gained a new device - this is currently for
|
|
* linear only
|
|
* resync: mark as dirty so a resync will happen.
|
|
* name: update the name - preserving the homehost
|
|
*
|
|
* Following are not relevant for this imsm:
|
|
* sparc2.2 : update from old dodgey metadata
|
|
* super-minor: change the preferred_minor number
|
|
* summaries: update redundant counters.
|
|
* uuid: Change the uuid of the array to match watch is given
|
|
* homehost: update the recorded homehost
|
|
* _reshape_progress: record new reshape_progress position.
|
|
*/
|
|
int rv = 0;
|
|
//struct intel_super *super = st->sb;
|
|
//struct imsm_super *mpb = super->mpb;
|
|
|
|
if (strcmp(update, "grow") == 0) {
|
|
}
|
|
if (strcmp(update, "resync") == 0) {
|
|
/* dev->vol.dirty = 1; */
|
|
}
|
|
|
|
/* IMSM has no concept of UUID or homehost */
|
|
|
|
return rv;
|
|
}
|
|
|
|
static size_t disks_to_mpb_size(int disks)
|
|
{
|
|
size_t size;
|
|
|
|
size = sizeof(struct imsm_super);
|
|
size += (disks - 1) * sizeof(struct imsm_disk);
|
|
size += 2 * sizeof(struct imsm_dev);
|
|
/* up to 2 maps per raid device (-2 for imsm_maps in imsm_dev */
|
|
size += (4 - 2) * sizeof(struct imsm_map);
|
|
/* 4 possible disk_ord_tbl's */
|
|
size += 4 * (disks - 1) * sizeof(__u32);
|
|
|
|
return size;
|
|
}
|
|
|
|
static __u64 avail_size_imsm(struct supertype *st, __u64 devsize)
|
|
{
|
|
if (devsize < (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS))
|
|
return 0;
|
|
|
|
return devsize - (MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS);
|
|
}
|
|
|
|
static int compare_super_imsm(struct supertype *st, struct supertype *tst)
|
|
{
|
|
/*
|
|
* return:
|
|
* 0 same, or first was empty, and second was copied
|
|
* 1 second had wrong number
|
|
* 2 wrong uuid
|
|
* 3 wrong other info
|
|
*/
|
|
struct intel_super *first = st->sb;
|
|
struct intel_super *sec = tst->sb;
|
|
|
|
if (!first) {
|
|
st->sb = tst->sb;
|
|
tst->sb = NULL;
|
|
return 0;
|
|
}
|
|
|
|
if (memcmp(first->anchor->sig, sec->anchor->sig, MAX_SIGNATURE_LENGTH) != 0)
|
|
return 3;
|
|
|
|
/* if an anchor does not have num_raid_devs set then it is a free
|
|
* floating spare
|
|
*/
|
|
if (first->anchor->num_raid_devs > 0 &&
|
|
sec->anchor->num_raid_devs > 0) {
|
|
if (first->anchor->family_num != sec->anchor->family_num)
|
|
return 3;
|
|
}
|
|
|
|
/* if 'first' is a spare promote it to a populated mpb with sec's
|
|
* family number
|
|
*/
|
|
if (first->anchor->num_raid_devs == 0 &&
|
|
sec->anchor->num_raid_devs > 0) {
|
|
int i;
|
|
|
|
/* we need to copy raid device info from sec if an allocation
|
|
* fails here we don't associate the spare
|
|
*/
|
|
for (i = 0; i < sec->anchor->num_raid_devs; i++) {
|
|
first->dev_tbl[i] = malloc(sizeof(struct imsm_dev));
|
|
if (!first->dev_tbl) {
|
|
while (--i >= 0) {
|
|
free(first->dev_tbl[i]);
|
|
first->dev_tbl[i] = NULL;
|
|
}
|
|
fprintf(stderr, "imsm: failed to associate spare\n");
|
|
return 3;
|
|
}
|
|
*first->dev_tbl[i] = *sec->dev_tbl[i];
|
|
}
|
|
|
|
first->anchor->num_raid_devs = sec->anchor->num_raid_devs;
|
|
first->anchor->family_num = sec->anchor->family_num;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void fd2devname(int fd, char *name)
|
|
{
|
|
struct stat st;
|
|
char path[256];
|
|
char dname[100];
|
|
char *nm;
|
|
int rv;
|
|
|
|
name[0] = '\0';
|
|
if (fstat(fd, &st) != 0)
|
|
return;
|
|
sprintf(path, "/sys/dev/block/%d:%d",
|
|
major(st.st_rdev), minor(st.st_rdev));
|
|
|
|
rv = readlink(path, dname, sizeof(dname));
|
|
if (rv <= 0)
|
|
return;
|
|
|
|
dname[rv] = '\0';
|
|
nm = strrchr(dname, '/');
|
|
nm++;
|
|
snprintf(name, MAX_RAID_SERIAL_LEN, "/dev/%s", nm);
|
|
}
|
|
|
|
|
|
extern int scsi_get_serial(int fd, void *buf, size_t buf_len);
|
|
|
|
static int imsm_read_serial(int fd, char *devname,
|
|
__u8 serial[MAX_RAID_SERIAL_LEN])
|
|
{
|
|
unsigned char scsi_serial[255];
|
|
int rv;
|
|
int rsp_len;
|
|
int len;
|
|
char *c, *rsp_buf;
|
|
|
|
memset(scsi_serial, 0, sizeof(scsi_serial));
|
|
|
|
rv = scsi_get_serial(fd, scsi_serial, sizeof(scsi_serial));
|
|
|
|
if (rv && check_env("IMSM_DEVNAME_AS_SERIAL")) {
|
|
memset(serial, 0, MAX_RAID_SERIAL_LEN);
|
|
fd2devname(fd, (char *) serial);
|
|
return 0;
|
|
}
|
|
|
|
if (rv != 0) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": Failed to retrieve serial for %s\n",
|
|
devname);
|
|
return rv;
|
|
}
|
|
|
|
/* trim leading whitespace */
|
|
rsp_len = scsi_serial[3];
|
|
rsp_buf = (char *) &scsi_serial[4];
|
|
c = rsp_buf;
|
|
while (isspace(*c))
|
|
c++;
|
|
|
|
/* truncate len to the end of rsp_buf if necessary */
|
|
if (c + MAX_RAID_SERIAL_LEN > rsp_buf + rsp_len)
|
|
len = rsp_len - (c - rsp_buf);
|
|
else
|
|
len = MAX_RAID_SERIAL_LEN;
|
|
|
|
/* initialize the buffer and copy rsp_buf characters */
|
|
memset(serial, 0, MAX_RAID_SERIAL_LEN);
|
|
memcpy(serial, c, len);
|
|
|
|
/* trim trailing whitespace starting with the last character copied */
|
|
c = (char *) &serial[len - 1];
|
|
while (isspace(*c) || *c == '\0')
|
|
*c-- = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int serialcmp(__u8 *s1, __u8 *s2)
|
|
{
|
|
return strncmp((char *) s1, (char *) s2, MAX_RAID_SERIAL_LEN);
|
|
}
|
|
|
|
static void serialcpy(__u8 *dest, __u8 *src)
|
|
{
|
|
strncpy((char *) dest, (char *) src, MAX_RAID_SERIAL_LEN);
|
|
}
|
|
|
|
static int
|
|
load_imsm_disk(int fd, struct intel_super *super, char *devname, int keep_fd)
|
|
{
|
|
struct dl *dl;
|
|
struct stat stb;
|
|
int rv;
|
|
int i;
|
|
int alloc = 1;
|
|
__u8 serial[MAX_RAID_SERIAL_LEN];
|
|
|
|
rv = imsm_read_serial(fd, devname, serial);
|
|
|
|
if (rv != 0)
|
|
return 2;
|
|
|
|
/* check if this is a disk we have seen before. it may be a spare in
|
|
* super->disks while the current anchor believes it is a raid member,
|
|
* check if we need to update dl->index
|
|
*/
|
|
for (dl = super->disks; dl; dl = dl->next)
|
|
if (serialcmp(dl->serial, serial) == 0)
|
|
break;
|
|
|
|
if (!dl)
|
|
dl = malloc(sizeof(*dl));
|
|
else
|
|
alloc = 0;
|
|
|
|
if (!dl) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": failed to allocate disk buffer for %s\n",
|
|
devname);
|
|
return 2;
|
|
}
|
|
|
|
if (alloc) {
|
|
fstat(fd, &stb);
|
|
dl->major = major(stb.st_rdev);
|
|
dl->minor = minor(stb.st_rdev);
|
|
dl->next = super->disks;
|
|
dl->fd = keep_fd ? fd : -1;
|
|
dl->devname = devname ? strdup(devname) : NULL;
|
|
serialcpy(dl->serial, serial);
|
|
dl->index = -2;
|
|
} else if (keep_fd) {
|
|
close(dl->fd);
|
|
dl->fd = fd;
|
|
}
|
|
|
|
/* look up this disk's index in the current anchor */
|
|
for (i = 0; i < super->anchor->num_disks; i++) {
|
|
struct imsm_disk *disk_iter;
|
|
|
|
disk_iter = __get_imsm_disk(super->anchor, i);
|
|
|
|
if (serialcmp(disk_iter->serial, dl->serial) == 0) {
|
|
__u32 status;
|
|
|
|
dl->disk = *disk_iter;
|
|
status = __le32_to_cpu(dl->disk.status);
|
|
/* only set index on disks that are a member of a
|
|
* populated contianer, i.e. one with raid_devs
|
|
*/
|
|
if (status & FAILED_DISK)
|
|
dl->index = -2;
|
|
else if (status & SPARE_DISK)
|
|
dl->index = -1;
|
|
else
|
|
dl->index = i;
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* no match, maybe a stale failed drive */
|
|
if (i == super->anchor->num_disks && dl->index >= 0) {
|
|
dl->disk = *__get_imsm_disk(super->anchor, dl->index);
|
|
if (__le32_to_cpu(dl->disk.status) & FAILED_DISK)
|
|
dl->index = -2;
|
|
}
|
|
|
|
if (alloc)
|
|
super->disks = dl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void imsm_copy_dev(struct imsm_dev *dest, struct imsm_dev *src)
|
|
{
|
|
memcpy(dest, src, sizeof_imsm_dev(src, 0));
|
|
}
|
|
|
|
#ifndef MDASSEMBLE
|
|
/* When migrating map0 contains the 'destination' state while map1
|
|
* contains the current state. When not migrating map0 contains the
|
|
* current state. This routine assumes that map[0].map_state is set to
|
|
* the current array state before being called.
|
|
*
|
|
* Migration is indicated by one of the following states
|
|
* 1/ Idle (migr_state=0 map0state=normal||unitialized||degraded||failed)
|
|
* 2/ Initialize (migr_state=1 migr_type=0 map0state=normal
|
|
* map1state=unitialized)
|
|
* 3/ Verify (Resync) (migr_state=1 migr_type=1 map0state=normal
|
|
* map1state=normal)
|
|
* 4/ Rebuild (migr_state=1 migr_type=1 map0state=normal
|
|
* map1state=degraded)
|
|
*/
|
|
static void migrate(struct imsm_dev *dev, __u8 to_state, int rebuild_resync)
|
|
{
|
|
struct imsm_map *dest;
|
|
struct imsm_map *src = get_imsm_map(dev, 0);
|
|
|
|
dev->vol.migr_state = 1;
|
|
dev->vol.migr_type = rebuild_resync;
|
|
dev->vol.curr_migr_unit = 0;
|
|
dest = get_imsm_map(dev, 1);
|
|
|
|
memcpy(dest, src, sizeof_imsm_map(src));
|
|
src->map_state = to_state;
|
|
}
|
|
|
|
static void end_migration(struct imsm_dev *dev, __u8 map_state)
|
|
{
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
|
|
dev->vol.migr_state = 0;
|
|
dev->vol.curr_migr_unit = 0;
|
|
map->map_state = map_state;
|
|
}
|
|
#endif
|
|
|
|
static int parse_raid_devices(struct intel_super *super)
|
|
{
|
|
int i;
|
|
struct imsm_dev *dev_new;
|
|
size_t len, len_migr;
|
|
size_t space_needed = 0;
|
|
struct imsm_super *mpb = super->anchor;
|
|
|
|
for (i = 0; i < super->anchor->num_raid_devs; i++) {
|
|
struct imsm_dev *dev_iter = __get_imsm_dev(super->anchor, i);
|
|
|
|
len = sizeof_imsm_dev(dev_iter, 0);
|
|
len_migr = sizeof_imsm_dev(dev_iter, 1);
|
|
if (len_migr > len)
|
|
space_needed += len_migr - len;
|
|
|
|
dev_new = malloc(len_migr);
|
|
if (!dev_new)
|
|
return 1;
|
|
imsm_copy_dev(dev_new, dev_iter);
|
|
super->dev_tbl[i] = dev_new;
|
|
}
|
|
|
|
/* ensure that super->buf is large enough when all raid devices
|
|
* are migrating
|
|
*/
|
|
if (__le32_to_cpu(mpb->mpb_size) + space_needed > super->len) {
|
|
void *buf;
|
|
|
|
len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + space_needed, 512);
|
|
if (posix_memalign(&buf, 512, len) != 0)
|
|
return 1;
|
|
|
|
memcpy(buf, super->buf, len);
|
|
free(super->buf);
|
|
super->buf = buf;
|
|
super->len = len;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* retrieve a pointer to the bbm log which starts after all raid devices */
|
|
struct bbm_log *__get_imsm_bbm_log(struct imsm_super *mpb)
|
|
{
|
|
void *ptr = NULL;
|
|
|
|
if (__le32_to_cpu(mpb->bbm_log_size)) {
|
|
ptr = mpb;
|
|
ptr += mpb->mpb_size - __le32_to_cpu(mpb->bbm_log_size);
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
static void __free_imsm(struct intel_super *super, int free_disks);
|
|
|
|
/* load_imsm_mpb - read matrix metadata
|
|
* allocates super->mpb to be freed by free_super
|
|
*/
|
|
static int load_imsm_mpb(int fd, struct intel_super *super, char *devname)
|
|
{
|
|
unsigned long long dsize;
|
|
unsigned long long sectors;
|
|
struct stat;
|
|
struct imsm_super *anchor;
|
|
__u32 check_sum;
|
|
int rc;
|
|
|
|
get_dev_size(fd, NULL, &dsize);
|
|
|
|
if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": Cannot seek to anchor block on %s: %s\n",
|
|
devname, strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
if (posix_memalign((void**)&anchor, 512, 512) != 0) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": Failed to allocate imsm anchor buffer"
|
|
" on %s\n", devname);
|
|
return 1;
|
|
}
|
|
if (read(fd, anchor, 512) != 512) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": Cannot read anchor block on %s: %s\n",
|
|
devname, strerror(errno));
|
|
free(anchor);
|
|
return 1;
|
|
}
|
|
|
|
if (strncmp((char *) anchor->sig, MPB_SIGNATURE, MPB_SIG_LEN) != 0) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": no IMSM anchor on %s\n", devname);
|
|
free(anchor);
|
|
return 2;
|
|
}
|
|
|
|
__free_imsm(super, 0);
|
|
super->len = ROUND_UP(anchor->mpb_size, 512);
|
|
if (posix_memalign(&super->buf, 512, super->len) != 0) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": unable to allocate %zu byte mpb buffer\n",
|
|
super->len);
|
|
free(anchor);
|
|
return 2;
|
|
}
|
|
memcpy(super->buf, anchor, 512);
|
|
|
|
sectors = mpb_sectors(anchor) - 1;
|
|
free(anchor);
|
|
if (!sectors) {
|
|
rc = load_imsm_disk(fd, super, devname, 0);
|
|
if (rc == 0)
|
|
rc = parse_raid_devices(super);
|
|
return rc;
|
|
}
|
|
|
|
/* read the extended mpb */
|
|
if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": Cannot seek to extended mpb on %s: %s\n",
|
|
devname, strerror(errno));
|
|
return 1;
|
|
}
|
|
|
|
if (read(fd, super->buf + 512, super->len - 512) != super->len - 512) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": Cannot read extended mpb on %s: %s\n",
|
|
devname, strerror(errno));
|
|
return 2;
|
|
}
|
|
|
|
check_sum = __gen_imsm_checksum(super->anchor);
|
|
if (check_sum != __le32_to_cpu(super->anchor->check_sum)) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": IMSM checksum %x != %x on %s\n",
|
|
check_sum, __le32_to_cpu(super->anchor->check_sum),
|
|
devname);
|
|
return 2;
|
|
}
|
|
|
|
/* FIXME the BBM log is disk specific so we cannot use this global
|
|
* buffer for all disks. Ok for now since we only look at the global
|
|
* bbm_log_size parameter to gate assembly
|
|
*/
|
|
super->bbm_log = __get_imsm_bbm_log(super->anchor);
|
|
|
|
rc = load_imsm_disk(fd, super, devname, 0);
|
|
if (rc == 0)
|
|
rc = parse_raid_devices(super);
|
|
|
|
return rc;
|
|
}
|
|
|
|
static void __free_imsm_disk(struct dl *d)
|
|
{
|
|
if (d->fd >= 0)
|
|
close(d->fd);
|
|
if (d->devname)
|
|
free(d->devname);
|
|
free(d);
|
|
|
|
}
|
|
static void free_imsm_disks(struct intel_super *super)
|
|
{
|
|
struct dl *d;
|
|
|
|
while (super->disks) {
|
|
d = super->disks;
|
|
super->disks = d->next;
|
|
__free_imsm_disk(d);
|
|
}
|
|
while (super->missing) {
|
|
d = super->missing;
|
|
super->missing = d->next;
|
|
__free_imsm_disk(d);
|
|
}
|
|
|
|
}
|
|
|
|
/* free all the pieces hanging off of a super pointer */
|
|
static void __free_imsm(struct intel_super *super, int free_disks)
|
|
{
|
|
int i;
|
|
|
|
if (super->buf) {
|
|
free(super->buf);
|
|
super->buf = NULL;
|
|
}
|
|
if (free_disks)
|
|
free_imsm_disks(super);
|
|
for (i = 0; i < IMSM_MAX_RAID_DEVS; i++)
|
|
if (super->dev_tbl[i]) {
|
|
free(super->dev_tbl[i]);
|
|
super->dev_tbl[i] = NULL;
|
|
}
|
|
}
|
|
|
|
static void free_imsm(struct intel_super *super)
|
|
{
|
|
__free_imsm(super, 1);
|
|
free(super);
|
|
}
|
|
|
|
static void free_super_imsm(struct supertype *st)
|
|
{
|
|
struct intel_super *super = st->sb;
|
|
|
|
if (!super)
|
|
return;
|
|
|
|
free_imsm(super);
|
|
st->sb = NULL;
|
|
}
|
|
|
|
static struct intel_super *alloc_super(int creating_imsm)
|
|
{
|
|
struct intel_super *super = malloc(sizeof(*super));
|
|
|
|
if (super) {
|
|
memset(super, 0, sizeof(*super));
|
|
super->creating_imsm = creating_imsm;
|
|
super->current_vol = -1;
|
|
}
|
|
|
|
return super;
|
|
}
|
|
|
|
#ifndef MDASSEMBLE
|
|
/* find_missing - helper routine for load_super_imsm_all that identifies
|
|
* disks that have disappeared from the system. This routine relies on
|
|
* the mpb being uptodate, which it is at load time.
|
|
*/
|
|
static int find_missing(struct intel_super *super)
|
|
{
|
|
int i;
|
|
struct imsm_super *mpb = super->anchor;
|
|
struct dl *dl;
|
|
struct imsm_disk *disk;
|
|
__u32 status;
|
|
|
|
for (i = 0; i < mpb->num_disks; i++) {
|
|
disk = __get_imsm_disk(mpb, i);
|
|
for (dl = super->disks; dl; dl = dl->next)
|
|
if (serialcmp(dl->disk.serial, disk->serial) == 0)
|
|
break;
|
|
if (dl)
|
|
continue;
|
|
/* ok we have a 'disk' without a live entry in
|
|
* super->disks
|
|
*/
|
|
status = __le32_to_cpu(disk->status);
|
|
if (status & FAILED_DISK || !(status & USABLE_DISK))
|
|
continue; /* never mind, already marked */
|
|
|
|
dl = malloc(sizeof(*dl));
|
|
if (!dl)
|
|
return 1;
|
|
dl->major = 0;
|
|
dl->minor = 0;
|
|
dl->fd = -1;
|
|
dl->devname = strdup("missing");
|
|
dl->index = i;
|
|
serialcpy(dl->serial, disk->serial);
|
|
dl->disk = *disk;
|
|
dl->next = super->missing;
|
|
super->missing = dl;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int load_super_imsm_all(struct supertype *st, int fd, void **sbp,
|
|
char *devname, int keep_fd)
|
|
{
|
|
struct mdinfo *sra;
|
|
struct intel_super *super;
|
|
struct mdinfo *sd, *best = NULL;
|
|
__u32 bestgen = 0;
|
|
__u32 gen;
|
|
char nm[20];
|
|
int dfd;
|
|
int rv;
|
|
|
|
/* check if this disk is a member of an active array */
|
|
sra = sysfs_read(fd, 0, GET_LEVEL|GET_VERSION|GET_DEVS|GET_STATE);
|
|
if (!sra)
|
|
return 1;
|
|
|
|
if (sra->array.major_version != -1 ||
|
|
sra->array.minor_version != -2 ||
|
|
strcmp(sra->text_version, "imsm") != 0)
|
|
return 1;
|
|
|
|
super = alloc_super(0);
|
|
if (!super)
|
|
return 1;
|
|
|
|
/* find the most up to date disk in this array, skipping spares */
|
|
for (sd = sra->devs; sd; sd = sd->next) {
|
|
sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
|
|
dfd = dev_open(nm, keep_fd ? O_RDWR : O_RDONLY);
|
|
if (!dfd) {
|
|
free_imsm(super);
|
|
return 2;
|
|
}
|
|
rv = load_imsm_mpb(dfd, super, NULL);
|
|
if (!keep_fd)
|
|
close(dfd);
|
|
if (rv == 0) {
|
|
if (super->anchor->num_raid_devs == 0)
|
|
gen = 0;
|
|
else
|
|
gen = __le32_to_cpu(super->anchor->generation_num);
|
|
if (!best || gen > bestgen) {
|
|
bestgen = gen;
|
|
best = sd;
|
|
}
|
|
} else {
|
|
free_imsm(super);
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
if (!best) {
|
|
free_imsm(super);
|
|
return 1;
|
|
}
|
|
|
|
/* load the most up to date anchor */
|
|
sprintf(nm, "%d:%d", best->disk.major, best->disk.minor);
|
|
dfd = dev_open(nm, O_RDONLY);
|
|
if (!dfd) {
|
|
free_imsm(super);
|
|
return 1;
|
|
}
|
|
rv = load_imsm_mpb(dfd, super, NULL);
|
|
close(dfd);
|
|
if (rv != 0) {
|
|
free_imsm(super);
|
|
return 2;
|
|
}
|
|
|
|
/* re-parse the disk list with the current anchor */
|
|
for (sd = sra->devs ; sd ; sd = sd->next) {
|
|
sprintf(nm, "%d:%d", sd->disk.major, sd->disk.minor);
|
|
dfd = dev_open(nm, keep_fd? O_RDWR : O_RDONLY);
|
|
if (!dfd) {
|
|
free_imsm(super);
|
|
return 2;
|
|
}
|
|
load_imsm_disk(dfd, super, NULL, keep_fd);
|
|
if (!keep_fd)
|
|
close(dfd);
|
|
}
|
|
|
|
|
|
if (find_missing(super) != 0) {
|
|
free_imsm(super);
|
|
return 2;
|
|
}
|
|
|
|
if (st->subarray[0]) {
|
|
if (atoi(st->subarray) <= super->anchor->num_raid_devs)
|
|
super->current_vol = atoi(st->subarray);
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
*sbp = super;
|
|
st->container_dev = fd2devnum(fd);
|
|
if (st->ss == NULL) {
|
|
st->ss = &super_imsm;
|
|
st->minor_version = 0;
|
|
st->max_devs = IMSM_MAX_DEVICES;
|
|
}
|
|
st->loaded_container = 1;
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
static int load_super_imsm(struct supertype *st, int fd, char *devname)
|
|
{
|
|
struct intel_super *super;
|
|
int rv;
|
|
|
|
#ifndef MDASSEMBLE
|
|
if (load_super_imsm_all(st, fd, &st->sb, devname, 1) == 0)
|
|
return 0;
|
|
#endif
|
|
if (st->subarray[0])
|
|
return 1; /* FIXME */
|
|
|
|
super = alloc_super(0);
|
|
if (!super) {
|
|
fprintf(stderr,
|
|
Name ": malloc of %zu failed.\n",
|
|
sizeof(*super));
|
|
return 1;
|
|
}
|
|
|
|
rv = load_imsm_mpb(fd, super, devname);
|
|
|
|
if (rv) {
|
|
if (devname)
|
|
fprintf(stderr,
|
|
Name ": Failed to load all information "
|
|
"sections on %s\n", devname);
|
|
free_imsm(super);
|
|
return rv;
|
|
}
|
|
|
|
st->sb = super;
|
|
if (st->ss == NULL) {
|
|
st->ss = &super_imsm;
|
|
st->minor_version = 0;
|
|
st->max_devs = IMSM_MAX_DEVICES;
|
|
}
|
|
st->loaded_container = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __u16 info_to_blocks_per_strip(mdu_array_info_t *info)
|
|
{
|
|
if (info->level == 1)
|
|
return 128;
|
|
return info->chunk_size >> 9;
|
|
}
|
|
|
|
static __u32 info_to_num_data_stripes(mdu_array_info_t *info)
|
|
{
|
|
__u32 num_stripes;
|
|
|
|
num_stripes = (info->size * 2) / info_to_blocks_per_strip(info);
|
|
if (info->level == 1)
|
|
num_stripes /= 2;
|
|
|
|
return num_stripes;
|
|
}
|
|
|
|
static __u32 info_to_blocks_per_member(mdu_array_info_t *info)
|
|
{
|
|
return (info->size * 2) & ~(info_to_blocks_per_strip(info) - 1);
|
|
}
|
|
|
|
static int init_super_imsm_volume(struct supertype *st, mdu_array_info_t *info,
|
|
unsigned long long size, char *name,
|
|
char *homehost, int *uuid)
|
|
{
|
|
/* We are creating a volume inside a pre-existing container.
|
|
* so st->sb is already set.
|
|
*/
|
|
struct intel_super *super = st->sb;
|
|
struct imsm_super *mpb = super->anchor;
|
|
struct imsm_dev *dev;
|
|
struct imsm_vol *vol;
|
|
struct imsm_map *map;
|
|
int idx = mpb->num_raid_devs;
|
|
int i;
|
|
unsigned long long array_blocks;
|
|
__u32 offset = 0;
|
|
size_t size_old, size_new;
|
|
|
|
if (mpb->num_raid_devs >= 2) {
|
|
fprintf(stderr, Name": This imsm-container already has the "
|
|
"maximum of 2 volumes\n");
|
|
return 0;
|
|
}
|
|
|
|
/* ensure the mpb is large enough for the new data */
|
|
size_old = __le32_to_cpu(mpb->mpb_size);
|
|
size_new = disks_to_mpb_size(info->nr_disks);
|
|
if (size_new > size_old) {
|
|
void *mpb_new;
|
|
size_t size_round = ROUND_UP(size_new, 512);
|
|
|
|
if (posix_memalign(&mpb_new, 512, size_round) != 0) {
|
|
fprintf(stderr, Name": could not allocate new mpb\n");
|
|
return 0;
|
|
}
|
|
memcpy(mpb_new, mpb, size_old);
|
|
free(mpb);
|
|
mpb = mpb_new;
|
|
super->anchor = mpb_new;
|
|
mpb->mpb_size = __cpu_to_le32(size_new);
|
|
memset(mpb_new + size_old, 0, size_round - size_old);
|
|
}
|
|
super->current_vol = idx;
|
|
/* when creating the first raid device in this container set num_disks
|
|
* to zero, i.e. delete this spare and add raid member devices in
|
|
* add_to_super_imsm_volume()
|
|
*/
|
|
if (super->current_vol == 0)
|
|
mpb->num_disks = 0;
|
|
sprintf(st->subarray, "%d", idx);
|
|
dev = malloc(sizeof(*dev) + sizeof(__u32) * (info->raid_disks - 1));
|
|
if (!dev) {
|
|
fprintf(stderr, Name": could not allocate raid device\n");
|
|
return 0;
|
|
}
|
|
strncpy((char *) dev->volume, name, MAX_RAID_SERIAL_LEN);
|
|
array_blocks = calc_array_size(info->level, info->raid_disks,
|
|
info->layout, info->chunk_size,
|
|
info->size*2);
|
|
dev->size_low = __cpu_to_le32((__u32) array_blocks);
|
|
dev->size_high = __cpu_to_le32((__u32) (array_blocks >> 32));
|
|
dev->status = __cpu_to_le32(0);
|
|
dev->reserved_blocks = __cpu_to_le32(0);
|
|
vol = &dev->vol;
|
|
vol->migr_state = 0;
|
|
vol->migr_type = 0;
|
|
vol->dirty = 0;
|
|
vol->curr_migr_unit = 0;
|
|
for (i = 0; i < idx; i++) {
|
|
struct imsm_dev *prev = get_imsm_dev(super, i);
|
|
struct imsm_map *pmap = get_imsm_map(prev, 0);
|
|
|
|
offset += __le32_to_cpu(pmap->blocks_per_member);
|
|
offset += IMSM_RESERVED_SECTORS;
|
|
}
|
|
map = get_imsm_map(dev, 0);
|
|
map->pba_of_lba0 = __cpu_to_le32(offset);
|
|
map->blocks_per_member = __cpu_to_le32(info_to_blocks_per_member(info));
|
|
map->blocks_per_strip = __cpu_to_le16(info_to_blocks_per_strip(info));
|
|
map->num_data_stripes = __cpu_to_le32(info_to_num_data_stripes(info));
|
|
map->map_state = info->level ? IMSM_T_STATE_UNINITIALIZED :
|
|
IMSM_T_STATE_NORMAL;
|
|
|
|
if (info->level == 1 && info->raid_disks > 2) {
|
|
fprintf(stderr, Name": imsm does not support more than 2 disks"
|
|
"in a raid1 volume\n");
|
|
return 0;
|
|
}
|
|
if (info->level == 10)
|
|
map->raid_level = 1;
|
|
else
|
|
map->raid_level = info->level;
|
|
|
|
map->num_members = info->raid_disks;
|
|
for (i = 0; i < map->num_members; i++) {
|
|
/* initialized in add_to_super */
|
|
set_imsm_ord_tbl_ent(map, i, 0);
|
|
}
|
|
mpb->num_raid_devs++;
|
|
super->dev_tbl[super->current_vol] = dev;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int init_super_imsm(struct supertype *st, mdu_array_info_t *info,
|
|
unsigned long long size, char *name,
|
|
char *homehost, int *uuid)
|
|
{
|
|
/* This is primarily called by Create when creating a new array.
|
|
* We will then get add_to_super called for each component, and then
|
|
* write_init_super called to write it out to each device.
|
|
* For IMSM, Create can create on fresh devices or on a pre-existing
|
|
* array.
|
|
* To create on a pre-existing array a different method will be called.
|
|
* This one is just for fresh drives.
|
|
*/
|
|
struct intel_super *super;
|
|
struct imsm_super *mpb;
|
|
size_t mpb_size;
|
|
|
|
if (!info) {
|
|
st->sb = NULL;
|
|
return 0;
|
|
}
|
|
if (st->sb)
|
|
return init_super_imsm_volume(st, info, size, name, homehost,
|
|
uuid);
|
|
|
|
super = alloc_super(1);
|
|
if (!super)
|
|
return 0;
|
|
mpb_size = disks_to_mpb_size(info->nr_disks);
|
|
if (posix_memalign(&super->buf, 512, mpb_size) != 0) {
|
|
free(super);
|
|
return 0;
|
|
}
|
|
mpb = super->buf;
|
|
memset(mpb, 0, mpb_size);
|
|
|
|
memcpy(mpb->sig, MPB_SIGNATURE, strlen(MPB_SIGNATURE));
|
|
memcpy(mpb->sig + strlen(MPB_SIGNATURE), MPB_VERSION_RAID5,
|
|
strlen(MPB_VERSION_RAID5));
|
|
mpb->mpb_size = mpb_size;
|
|
|
|
st->sb = super;
|
|
return 1;
|
|
}
|
|
|
|
#ifndef MDASSEMBLE
|
|
static void add_to_super_imsm_volume(struct supertype *st, mdu_disk_info_t *dk,
|
|
int fd, char *devname)
|
|
{
|
|
struct intel_super *super = st->sb;
|
|
struct imsm_super *mpb = super->anchor;
|
|
struct dl *dl;
|
|
struct imsm_dev *dev;
|
|
struct imsm_map *map;
|
|
__u32 status;
|
|
|
|
dev = get_imsm_dev(super, super->current_vol);
|
|
map = get_imsm_map(dev, 0);
|
|
|
|
for (dl = super->disks; dl ; dl = dl->next)
|
|
if (dl->major == dk->major &&
|
|
dl->minor == dk->minor)
|
|
break;
|
|
|
|
if (!dl || ! (dk->state & (1<<MD_DISK_SYNC)))
|
|
return;
|
|
|
|
/* add a pristine spare to the metadata */
|
|
if (dl->index < 0) {
|
|
dl->index = super->anchor->num_disks;
|
|
super->anchor->num_disks++;
|
|
}
|
|
set_imsm_ord_tbl_ent(map, dk->number, dl->index);
|
|
status = CONFIGURED_DISK | USABLE_DISK;
|
|
dl->disk.status = __cpu_to_le32(status);
|
|
|
|
/* if we are creating the first raid device update the family number */
|
|
if (super->current_vol == 0) {
|
|
__u32 sum;
|
|
struct imsm_dev *_dev = __get_imsm_dev(mpb, 0);
|
|
struct imsm_disk *_disk = __get_imsm_disk(mpb, dl->index);
|
|
|
|
*_dev = *dev;
|
|
*_disk = dl->disk;
|
|
sum = __gen_imsm_checksum(mpb);
|
|
mpb->family_num = __cpu_to_le32(sum);
|
|
}
|
|
}
|
|
|
|
static void add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
|
|
int fd, char *devname)
|
|
{
|
|
struct intel_super *super = st->sb;
|
|
struct dl *dd;
|
|
unsigned long long size;
|
|
__u32 status, id;
|
|
int rv;
|
|
struct stat stb;
|
|
|
|
if (super->current_vol >= 0) {
|
|
add_to_super_imsm_volume(st, dk, fd, devname);
|
|
return;
|
|
}
|
|
|
|
fstat(fd, &stb);
|
|
dd = malloc(sizeof(*dd));
|
|
if (!dd) {
|
|
fprintf(stderr,
|
|
Name ": malloc failed %s:%d.\n", __func__, __LINE__);
|
|
abort();
|
|
}
|
|
memset(dd, 0, sizeof(*dd));
|
|
dd->major = major(stb.st_rdev);
|
|
dd->minor = minor(stb.st_rdev);
|
|
dd->index = -1;
|
|
dd->devname = devname ? strdup(devname) : NULL;
|
|
dd->fd = fd;
|
|
rv = imsm_read_serial(fd, devname, dd->serial);
|
|
if (rv) {
|
|
fprintf(stderr,
|
|
Name ": failed to retrieve scsi serial, aborting\n");
|
|
free(dd);
|
|
abort();
|
|
}
|
|
|
|
get_dev_size(fd, NULL, &size);
|
|
size /= 512;
|
|
status = USABLE_DISK | SPARE_DISK;
|
|
serialcpy(dd->disk.serial, dd->serial);
|
|
dd->disk.total_blocks = __cpu_to_le32(size);
|
|
dd->disk.status = __cpu_to_le32(status);
|
|
if (sysfs_disk_to_scsi_id(fd, &id) == 0)
|
|
dd->disk.scsi_id = __cpu_to_le32(id);
|
|
else
|
|
dd->disk.scsi_id = __cpu_to_le32(0);
|
|
|
|
if (st->update_tail) {
|
|
dd->next = super->add;
|
|
super->add = dd;
|
|
} else {
|
|
dd->next = super->disks;
|
|
super->disks = dd;
|
|
}
|
|
}
|
|
|
|
static int store_imsm_mpb(int fd, struct intel_super *super);
|
|
|
|
/* spare records have their own family number and do not have any defined raid
|
|
* devices
|
|
*/
|
|
static int write_super_imsm_spares(struct intel_super *super, int doclose)
|
|
{
|
|
struct imsm_super mpb_save;
|
|
struct imsm_super *mpb = super->anchor;
|
|
__u32 sum;
|
|
struct dl *d;
|
|
|
|
mpb_save = *mpb;
|
|
mpb->num_raid_devs = 0;
|
|
mpb->num_disks = 1;
|
|
mpb->mpb_size = sizeof(struct imsm_super);
|
|
mpb->generation_num = __cpu_to_le32(1UL);
|
|
|
|
for (d = super->disks; d; d = d->next) {
|
|
if (d->index != -1)
|
|
continue;
|
|
|
|
mpb->disk[0] = d->disk;
|
|
sum = __gen_imsm_checksum(mpb);
|
|
mpb->family_num = __cpu_to_le32(sum);
|
|
sum = __gen_imsm_checksum(mpb);
|
|
mpb->check_sum = __cpu_to_le32(sum);
|
|
|
|
if (store_imsm_mpb(d->fd, super)) {
|
|
fprintf(stderr, "%s: failed for device %d:%d %s\n",
|
|
__func__, d->major, d->minor, strerror(errno));
|
|
*mpb = mpb_save;
|
|
return 1;
|
|
}
|
|
if (doclose) {
|
|
close(d->fd);
|
|
d->fd = -1;
|
|
}
|
|
}
|
|
|
|
*mpb = mpb_save;
|
|
return 0;
|
|
}
|
|
|
|
static int write_super_imsm(struct intel_super *super, int doclose)
|
|
{
|
|
struct imsm_super *mpb = super->anchor;
|
|
struct dl *d;
|
|
__u32 generation;
|
|
__u32 sum;
|
|
int spares = 0;
|
|
int i;
|
|
__u32 mpb_size = sizeof(struct imsm_super) - sizeof(struct imsm_disk);
|
|
|
|
/* 'generation' is incremented everytime the metadata is written */
|
|
generation = __le32_to_cpu(mpb->generation_num);
|
|
generation++;
|
|
mpb->generation_num = __cpu_to_le32(generation);
|
|
|
|
mpb_size += sizeof(struct imsm_disk) * mpb->num_disks;
|
|
for (d = super->disks; d; d = d->next) {
|
|
if (d->index == -1)
|
|
spares++;
|
|
else
|
|
mpb->disk[d->index] = d->disk;
|
|
}
|
|
for (d = super->missing; d; d = d->next)
|
|
mpb->disk[d->index] = d->disk;
|
|
|
|
for (i = 0; i < mpb->num_raid_devs; i++) {
|
|
struct imsm_dev *dev = __get_imsm_dev(mpb, i);
|
|
|
|
imsm_copy_dev(dev, super->dev_tbl[i]);
|
|
mpb_size += sizeof_imsm_dev(dev, 0);
|
|
}
|
|
mpb_size += __le32_to_cpu(mpb->bbm_log_size);
|
|
mpb->mpb_size = __cpu_to_le32(mpb_size);
|
|
|
|
/* recalculate checksum */
|
|
sum = __gen_imsm_checksum(mpb);
|
|
mpb->check_sum = __cpu_to_le32(sum);
|
|
|
|
/* write the mpb for disks that compose raid devices */
|
|
for (d = super->disks; d ; d = d->next) {
|
|
if (d->index < 0)
|
|
continue;
|
|
if (store_imsm_mpb(d->fd, super))
|
|
fprintf(stderr, "%s: failed for device %d:%d %s\n",
|
|
__func__, d->major, d->minor, strerror(errno));
|
|
if (doclose) {
|
|
close(d->fd);
|
|
d->fd = -1;
|
|
}
|
|
}
|
|
|
|
if (spares)
|
|
return write_super_imsm_spares(super, doclose);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int create_array(struct supertype *st)
|
|
{
|
|
size_t len;
|
|
struct imsm_update_create_array *u;
|
|
struct intel_super *super = st->sb;
|
|
struct imsm_dev *dev = get_imsm_dev(super, super->current_vol);
|
|
|
|
len = sizeof(*u) - sizeof(*dev) + sizeof_imsm_dev(dev, 0);
|
|
u = malloc(len);
|
|
if (!u) {
|
|
fprintf(stderr, "%s: failed to allocate update buffer\n",
|
|
__func__);
|
|
return 1;
|
|
}
|
|
|
|
u->type = update_create_array;
|
|
u->dev_idx = super->current_vol;
|
|
imsm_copy_dev(&u->dev, dev);
|
|
append_metadata_update(st, u, len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int _add_disk(struct supertype *st)
|
|
{
|
|
struct intel_super *super = st->sb;
|
|
size_t len;
|
|
struct imsm_update_add_disk *u;
|
|
|
|
if (!super->add)
|
|
return 0;
|
|
|
|
len = sizeof(*u);
|
|
u = malloc(len);
|
|
if (!u) {
|
|
fprintf(stderr, "%s: failed to allocate update buffer\n",
|
|
__func__);
|
|
return 1;
|
|
}
|
|
|
|
u->type = update_add_disk;
|
|
append_metadata_update(st, u, len);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int write_init_super_imsm(struct supertype *st)
|
|
{
|
|
if (st->update_tail) {
|
|
/* queue the recently created array / added disk
|
|
* as a metadata update */
|
|
struct intel_super *super = st->sb;
|
|
struct dl *d;
|
|
int rv;
|
|
|
|
/* determine if we are creating a volume or adding a disk */
|
|
if (super->current_vol < 0) {
|
|
/* in the add disk case we are running in mdmon
|
|
* context, so don't close fd's
|
|
*/
|
|
return _add_disk(st);
|
|
} else
|
|
rv = create_array(st);
|
|
|
|
for (d = super->disks; d ; d = d->next) {
|
|
close(d->fd);
|
|
d->fd = -1;
|
|
}
|
|
|
|
return rv;
|
|
} else
|
|
return write_super_imsm(st->sb, 1);
|
|
}
|
|
#endif
|
|
|
|
static int store_zero_imsm(struct supertype *st, int fd)
|
|
{
|
|
unsigned long long dsize;
|
|
void *buf;
|
|
|
|
get_dev_size(fd, NULL, &dsize);
|
|
|
|
/* first block is stored on second to last sector of the disk */
|
|
if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0)
|
|
return 1;
|
|
|
|
if (posix_memalign(&buf, 512, 512) != 0)
|
|
return 1;
|
|
|
|
memset(buf, 0, 512);
|
|
if (write(fd, buf, 512) != 512)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
static int imsm_bbm_log_size(struct imsm_super *mpb)
|
|
{
|
|
return __le32_to_cpu(mpb->bbm_log_size);
|
|
}
|
|
|
|
#ifndef MDASSEMBLE
|
|
static int validate_geometry_imsm_container(struct supertype *st, int level,
|
|
int layout, int raiddisks, int chunk,
|
|
unsigned long long size, char *dev,
|
|
unsigned long long *freesize,
|
|
int verbose)
|
|
{
|
|
int fd;
|
|
unsigned long long ldsize;
|
|
|
|
if (level != LEVEL_CONTAINER)
|
|
return 0;
|
|
if (!dev)
|
|
return 1;
|
|
|
|
fd = open(dev, O_RDONLY|O_EXCL, 0);
|
|
if (fd < 0) {
|
|
if (verbose)
|
|
fprintf(stderr, Name ": imsm: Cannot open %s: %s\n",
|
|
dev, strerror(errno));
|
|
return 0;
|
|
}
|
|
if (!get_dev_size(fd, dev, &ldsize)) {
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
close(fd);
|
|
|
|
*freesize = avail_size_imsm(st, ldsize >> 9);
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* validate_geometry_imsm_volume - lifted from validate_geometry_ddf_bvd
|
|
* FIX ME add ahci details
|
|
*/
|
|
static int validate_geometry_imsm_volume(struct supertype *st, int level,
|
|
int layout, int raiddisks, int chunk,
|
|
unsigned long long size, char *dev,
|
|
unsigned long long *freesize,
|
|
int verbose)
|
|
{
|
|
struct stat stb;
|
|
struct intel_super *super = st->sb;
|
|
struct dl *dl;
|
|
unsigned long long pos = 0;
|
|
unsigned long long maxsize;
|
|
struct extent *e;
|
|
int i;
|
|
|
|
if (level == LEVEL_CONTAINER)
|
|
return 0;
|
|
|
|
if (level == 1 && raiddisks > 2) {
|
|
if (verbose)
|
|
fprintf(stderr, Name ": imsm does not support more "
|
|
"than 2 in a raid1 configuration\n");
|
|
return 0;
|
|
}
|
|
|
|
/* We must have the container info already read in. */
|
|
if (!super)
|
|
return 0;
|
|
|
|
if (!dev) {
|
|
/* General test: make sure there is space for
|
|
* 'raiddisks' device extents of size 'size' at a given
|
|
* offset
|
|
*/
|
|
unsigned long long minsize = size*2 /* convert to blocks */;
|
|
unsigned long long start_offset = ~0ULL;
|
|
int dcnt = 0;
|
|
if (minsize == 0)
|
|
minsize = MPB_SECTOR_CNT + IMSM_RESERVED_SECTORS;
|
|
for (dl = super->disks; dl ; dl = dl->next) {
|
|
int found = 0;
|
|
|
|
pos = 0;
|
|
i = 0;
|
|
e = get_extents(super, dl);
|
|
if (!e) continue;
|
|
do {
|
|
unsigned long long esize;
|
|
esize = e[i].start - pos;
|
|
if (esize >= minsize)
|
|
found = 1;
|
|
if (found && start_offset == ~0ULL) {
|
|
start_offset = pos;
|
|
break;
|
|
} else if (found && pos != start_offset) {
|
|
found = 0;
|
|
break;
|
|
}
|
|
pos = e[i].start + e[i].size;
|
|
i++;
|
|
} while (e[i-1].size);
|
|
if (found)
|
|
dcnt++;
|
|
free(e);
|
|
}
|
|
if (dcnt < raiddisks) {
|
|
if (verbose)
|
|
fprintf(stderr, Name ": imsm: Not enough "
|
|
"devices with space for this array "
|
|
"(%d < %d)\n",
|
|
dcnt, raiddisks);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
/* This device must be a member of the set */
|
|
if (stat(dev, &stb) < 0)
|
|
return 0;
|
|
if ((S_IFMT & stb.st_mode) != S_IFBLK)
|
|
return 0;
|
|
for (dl = super->disks ; dl ; dl = dl->next) {
|
|
if (dl->major == major(stb.st_rdev) &&
|
|
dl->minor == minor(stb.st_rdev))
|
|
break;
|
|
}
|
|
if (!dl) {
|
|
if (verbose)
|
|
fprintf(stderr, Name ": %s is not in the "
|
|
"same imsm set\n", dev);
|
|
return 0;
|
|
}
|
|
e = get_extents(super, dl);
|
|
maxsize = 0;
|
|
i = 0;
|
|
if (e) do {
|
|
unsigned long long esize;
|
|
esize = e[i].start - pos;
|
|
if (esize >= maxsize)
|
|
maxsize = esize;
|
|
pos = e[i].start + e[i].size;
|
|
i++;
|
|
} while (e[i-1].size);
|
|
*freesize = maxsize;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int validate_geometry_imsm(struct supertype *st, int level, int layout,
|
|
int raiddisks, int chunk, unsigned long long size,
|
|
char *dev, unsigned long long *freesize,
|
|
int verbose)
|
|
{
|
|
int fd, cfd;
|
|
struct mdinfo *sra;
|
|
|
|
/* if given unused devices create a container
|
|
* if given given devices in a container create a member volume
|
|
*/
|
|
if (level == LEVEL_CONTAINER) {
|
|
/* Must be a fresh device to add to a container */
|
|
return validate_geometry_imsm_container(st, level, layout,
|
|
raiddisks, chunk, size,
|
|
dev, freesize,
|
|
verbose);
|
|
}
|
|
|
|
if (st->sb) {
|
|
/* creating in a given container */
|
|
return validate_geometry_imsm_volume(st, level, layout,
|
|
raiddisks, chunk, size,
|
|
dev, freesize, verbose);
|
|
}
|
|
|
|
/* limit creation to the following levels */
|
|
if (!dev)
|
|
switch (level) {
|
|
case 0:
|
|
case 1:
|
|
case 10:
|
|
case 5:
|
|
break;
|
|
default:
|
|
return 1;
|
|
}
|
|
|
|
/* This device needs to be a device in an 'imsm' container */
|
|
fd = open(dev, O_RDONLY|O_EXCL, 0);
|
|
if (fd >= 0) {
|
|
if (verbose)
|
|
fprintf(stderr,
|
|
Name ": Cannot create this array on device %s\n",
|
|
dev);
|
|
close(fd);
|
|
return 0;
|
|
}
|
|
if (errno != EBUSY || (fd = open(dev, O_RDONLY, 0)) < 0) {
|
|
if (verbose)
|
|
fprintf(stderr, Name ": Cannot open %s: %s\n",
|
|
dev, strerror(errno));
|
|
return 0;
|
|
}
|
|
/* Well, it is in use by someone, maybe an 'imsm' container. */
|
|
cfd = open_container(fd);
|
|
if (cfd < 0) {
|
|
close(fd);
|
|
if (verbose)
|
|
fprintf(stderr, Name ": Cannot use %s: It is busy\n",
|
|
dev);
|
|
return 0;
|
|
}
|
|
sra = sysfs_read(cfd, 0, GET_VERSION);
|
|
close(fd);
|
|
if (sra && sra->array.major_version == -1 &&
|
|
strcmp(sra->text_version, "imsm") == 0) {
|
|
/* This is a member of a imsm container. Load the container
|
|
* and try to create a volume
|
|
*/
|
|
struct intel_super *super;
|
|
|
|
if (load_super_imsm_all(st, cfd, (void **) &super, NULL, 1) == 0) {
|
|
st->sb = super;
|
|
st->container_dev = fd2devnum(cfd);
|
|
close(cfd);
|
|
return validate_geometry_imsm_volume(st, level, layout,
|
|
raiddisks, chunk,
|
|
size, dev,
|
|
freesize, verbose);
|
|
}
|
|
close(cfd);
|
|
} else /* may belong to another container */
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
#endif /* MDASSEMBLE */
|
|
|
|
static struct mdinfo *container_content_imsm(struct supertype *st)
|
|
{
|
|
/* Given a container loaded by load_super_imsm_all,
|
|
* extract information about all the arrays into
|
|
* an mdinfo tree.
|
|
*
|
|
* For each imsm_dev create an mdinfo, fill it in,
|
|
* then look for matching devices in super->disks
|
|
* and create appropriate device mdinfo.
|
|
*/
|
|
struct intel_super *super = st->sb;
|
|
struct imsm_super *mpb = super->anchor;
|
|
struct mdinfo *rest = NULL;
|
|
int i;
|
|
|
|
/* do not assemble arrays that might have bad blocks */
|
|
if (imsm_bbm_log_size(super->anchor)) {
|
|
fprintf(stderr, Name ": BBM log found in metadata. "
|
|
"Cannot activate array(s).\n");
|
|
return NULL;
|
|
}
|
|
|
|
for (i = 0; i < mpb->num_raid_devs; i++) {
|
|
struct imsm_dev *dev = get_imsm_dev(super, i);
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
struct mdinfo *this;
|
|
int slot;
|
|
|
|
this = malloc(sizeof(*this));
|
|
memset(this, 0, sizeof(*this));
|
|
this->next = rest;
|
|
|
|
super->current_vol = i;
|
|
getinfo_super_imsm_volume(st, this);
|
|
for (slot = 0 ; slot < map->num_members; slot++) {
|
|
struct mdinfo *info_d;
|
|
struct dl *d;
|
|
int idx;
|
|
int skip;
|
|
__u32 s;
|
|
__u32 ord;
|
|
|
|
skip = 0;
|
|
idx = get_imsm_disk_idx(dev, slot);
|
|
ord = get_imsm_ord_tbl_ent(dev, slot);
|
|
for (d = super->disks; d ; d = d->next)
|
|
if (d->index == idx)
|
|
break;
|
|
|
|
if (d == NULL)
|
|
skip = 1;
|
|
|
|
s = d ? __le32_to_cpu(d->disk.status) : 0;
|
|
if (s & FAILED_DISK)
|
|
skip = 1;
|
|
if (!(s & USABLE_DISK))
|
|
skip = 1;
|
|
if (ord & IMSM_ORD_REBUILD)
|
|
skip = 1;
|
|
|
|
/*
|
|
* if we skip some disks the array will be assmebled degraded;
|
|
* reset resync start to avoid a dirty-degraded situation
|
|
*
|
|
* FIXME handle dirty degraded
|
|
*/
|
|
if (skip && !dev->vol.dirty)
|
|
this->resync_start = ~0ULL;
|
|
if (skip)
|
|
continue;
|
|
|
|
info_d = malloc(sizeof(*info_d));
|
|
if (!info_d) {
|
|
fprintf(stderr, Name ": failed to allocate disk"
|
|
" for volume %s\n", (char *) dev->volume);
|
|
free(this);
|
|
this = rest;
|
|
break;
|
|
}
|
|
memset(info_d, 0, sizeof(*info_d));
|
|
info_d->next = this->devs;
|
|
this->devs = info_d;
|
|
|
|
info_d->disk.number = d->index;
|
|
info_d->disk.major = d->major;
|
|
info_d->disk.minor = d->minor;
|
|
info_d->disk.raid_disk = slot;
|
|
|
|
this->array.working_disks++;
|
|
|
|
info_d->events = __le32_to_cpu(mpb->generation_num);
|
|
info_d->data_offset = __le32_to_cpu(map->pba_of_lba0);
|
|
info_d->component_size = __le32_to_cpu(map->blocks_per_member);
|
|
if (d->devname)
|
|
strcpy(info_d->name, d->devname);
|
|
}
|
|
rest = this;
|
|
}
|
|
|
|
return rest;
|
|
}
|
|
|
|
|
|
#ifndef MDASSEMBLE
|
|
static int imsm_open_new(struct supertype *c, struct active_array *a,
|
|
char *inst)
|
|
{
|
|
struct intel_super *super = c->sb;
|
|
struct imsm_super *mpb = super->anchor;
|
|
|
|
if (atoi(inst) >= mpb->num_raid_devs) {
|
|
fprintf(stderr, "%s: subarry index %d, out of range\n",
|
|
__func__, atoi(inst));
|
|
return -ENODEV;
|
|
}
|
|
|
|
dprintf("imsm: open_new %s\n", inst);
|
|
a->info.container_member = atoi(inst);
|
|
return 0;
|
|
}
|
|
|
|
static __u8 imsm_check_degraded(struct intel_super *super, struct imsm_dev *dev, int failed)
|
|
{
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
|
|
if (!failed)
|
|
return map->map_state == IMSM_T_STATE_UNINITIALIZED ?
|
|
IMSM_T_STATE_UNINITIALIZED : IMSM_T_STATE_NORMAL;
|
|
|
|
switch (get_imsm_raid_level(map)) {
|
|
case 0:
|
|
return IMSM_T_STATE_FAILED;
|
|
break;
|
|
case 1:
|
|
if (failed < map->num_members)
|
|
return IMSM_T_STATE_DEGRADED;
|
|
else
|
|
return IMSM_T_STATE_FAILED;
|
|
break;
|
|
case 10:
|
|
{
|
|
/**
|
|
* check to see if any mirrors have failed, otherwise we
|
|
* are degraded. Even numbered slots are mirrored on
|
|
* slot+1
|
|
*/
|
|
int i;
|
|
/* gcc -Os complains that this is unused */
|
|
int insync = insync;
|
|
|
|
for (i = 0; i < map->num_members; i++) {
|
|
__u32 ord = get_imsm_ord_tbl_ent(dev, i);
|
|
int idx = ord_to_idx(ord);
|
|
struct imsm_disk *disk;
|
|
|
|
/* reset the potential in-sync count on even-numbered
|
|
* slots. num_copies is always 2 for imsm raid10
|
|
*/
|
|
if ((i & 1) == 0)
|
|
insync = 2;
|
|
|
|
disk = get_imsm_disk(super, idx);
|
|
if (!disk ||
|
|
__le32_to_cpu(disk->status) & FAILED_DISK ||
|
|
ord & IMSM_ORD_REBUILD)
|
|
insync--;
|
|
|
|
/* no in-sync disks left in this mirror the
|
|
* array has failed
|
|
*/
|
|
if (insync == 0)
|
|
return IMSM_T_STATE_FAILED;
|
|
}
|
|
|
|
return IMSM_T_STATE_DEGRADED;
|
|
}
|
|
case 5:
|
|
if (failed < 2)
|
|
return IMSM_T_STATE_DEGRADED;
|
|
else
|
|
return IMSM_T_STATE_FAILED;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return map->map_state;
|
|
}
|
|
|
|
static int imsm_count_failed(struct intel_super *super, struct imsm_dev *dev)
|
|
{
|
|
int i;
|
|
int failed = 0;
|
|
struct imsm_disk *disk;
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
|
|
for (i = 0; i < map->num_members; i++) {
|
|
__u32 ord = get_imsm_ord_tbl_ent(dev, i);
|
|
int idx = ord_to_idx(ord);
|
|
|
|
disk = get_imsm_disk(super, idx);
|
|
if (!disk ||
|
|
__le32_to_cpu(disk->status) & FAILED_DISK ||
|
|
ord & IMSM_ORD_REBUILD)
|
|
failed++;
|
|
}
|
|
|
|
return failed;
|
|
}
|
|
|
|
static int is_resyncing(struct imsm_dev *dev)
|
|
{
|
|
struct imsm_map *migr_map;
|
|
|
|
if (!dev->vol.migr_state)
|
|
return 0;
|
|
|
|
if (dev->vol.migr_type == 0)
|
|
return 1;
|
|
|
|
migr_map = get_imsm_map(dev, 1);
|
|
|
|
if (migr_map->map_state == IMSM_T_STATE_NORMAL)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static int is_rebuilding(struct imsm_dev *dev)
|
|
{
|
|
struct imsm_map *migr_map;
|
|
|
|
if (!dev->vol.migr_state)
|
|
return 0;
|
|
|
|
if (dev->vol.migr_type == 0)
|
|
return 0;
|
|
|
|
migr_map = get_imsm_map(dev, 1);
|
|
|
|
if (migr_map->map_state == IMSM_T_STATE_DEGRADED)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
static void mark_failure(struct imsm_disk *disk)
|
|
{
|
|
__u32 status = __le32_to_cpu(disk->status);
|
|
|
|
if (status & FAILED_DISK)
|
|
return;
|
|
status |= FAILED_DISK;
|
|
disk->status = __cpu_to_le32(status);
|
|
disk->scsi_id = __cpu_to_le32(~(__u32)0);
|
|
memmove(&disk->serial[0], &disk->serial[1], MAX_RAID_SERIAL_LEN - 1);
|
|
}
|
|
|
|
/* Handle dirty -> clean transititions and resync. Degraded and rebuild
|
|
* states are handled in imsm_set_disk() with one exception, when a
|
|
* resync is stopped due to a new failure this routine will set the
|
|
* 'degraded' state for the array.
|
|
*/
|
|
static int imsm_set_array_state(struct active_array *a, int consistent)
|
|
{
|
|
int inst = a->info.container_member;
|
|
struct intel_super *super = a->container->sb;
|
|
struct imsm_dev *dev = get_imsm_dev(super, inst);
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
int failed = imsm_count_failed(super, dev);
|
|
__u8 map_state = imsm_check_degraded(super, dev, failed);
|
|
|
|
/* before we activate this array handle any missing disks */
|
|
if (consistent == 2 && super->missing) {
|
|
struct dl *dl;
|
|
|
|
dprintf("imsm: mark missing\n");
|
|
end_migration(dev, map_state);
|
|
for (dl = super->missing; dl; dl = dl->next)
|
|
mark_failure(&dl->disk);
|
|
super->updates_pending++;
|
|
}
|
|
|
|
if (consistent == 2 &&
|
|
(!is_resync_complete(a) ||
|
|
map_state != IMSM_T_STATE_NORMAL ||
|
|
dev->vol.migr_state))
|
|
consistent = 0;
|
|
|
|
if (is_resync_complete(a)) {
|
|
/* complete intialization / resync,
|
|
* recovery is completed in ->set_disk
|
|
*/
|
|
if (is_resyncing(dev)) {
|
|
dprintf("imsm: mark resync done\n");
|
|
end_migration(dev, map_state);
|
|
super->updates_pending++;
|
|
}
|
|
} else if (!is_resyncing(dev) && !failed) {
|
|
/* mark the start of the init process if nothing is failed */
|
|
dprintf("imsm: mark resync start (%llu)\n", a->resync_start);
|
|
map->map_state = map_state;
|
|
migrate(dev, IMSM_T_STATE_NORMAL,
|
|
map->map_state == IMSM_T_STATE_NORMAL);
|
|
super->updates_pending++;
|
|
}
|
|
|
|
/* check if we can update the migration checkpoint */
|
|
if (dev->vol.migr_state &&
|
|
__le32_to_cpu(dev->vol.curr_migr_unit) != a->resync_start) {
|
|
dprintf("imsm: checkpoint migration (%llu)\n", a->resync_start);
|
|
dev->vol.curr_migr_unit = __cpu_to_le32(a->resync_start);
|
|
super->updates_pending++;
|
|
}
|
|
|
|
/* mark dirty / clean */
|
|
if (dev->vol.dirty != !consistent) {
|
|
dprintf("imsm: mark '%s' (%llu)\n",
|
|
consistent ? "clean" : "dirty", a->resync_start);
|
|
if (consistent)
|
|
dev->vol.dirty = 0;
|
|
else
|
|
dev->vol.dirty = 1;
|
|
super->updates_pending++;
|
|
}
|
|
return consistent;
|
|
}
|
|
|
|
static void imsm_set_disk(struct active_array *a, int n, int state)
|
|
{
|
|
int inst = a->info.container_member;
|
|
struct intel_super *super = a->container->sb;
|
|
struct imsm_dev *dev = get_imsm_dev(super, inst);
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
struct imsm_disk *disk;
|
|
int failed;
|
|
__u32 status;
|
|
__u32 ord;
|
|
__u8 map_state;
|
|
|
|
if (n > map->num_members)
|
|
fprintf(stderr, "imsm: set_disk %d out of range 0..%d\n",
|
|
n, map->num_members - 1);
|
|
|
|
if (n < 0)
|
|
return;
|
|
|
|
dprintf("imsm: set_disk %d:%x\n", n, state);
|
|
|
|
ord = get_imsm_ord_tbl_ent(dev, n);
|
|
disk = get_imsm_disk(super, ord_to_idx(ord));
|
|
|
|
/* check for new failures */
|
|
status = __le32_to_cpu(disk->status);
|
|
if ((state & DS_FAULTY) && !(status & FAILED_DISK)) {
|
|
mark_failure(disk);
|
|
super->updates_pending++;
|
|
}
|
|
|
|
/* check if in_sync */
|
|
if (state & DS_INSYNC && ord & IMSM_ORD_REBUILD) {
|
|
struct imsm_map *migr_map = get_imsm_map(dev, 1);
|
|
|
|
set_imsm_ord_tbl_ent(migr_map, n, ord_to_idx(ord));
|
|
super->updates_pending++;
|
|
}
|
|
|
|
failed = imsm_count_failed(super, dev);
|
|
map_state = imsm_check_degraded(super, dev, failed);
|
|
|
|
/* check if recovery complete, newly degraded, or failed */
|
|
if (map_state == IMSM_T_STATE_NORMAL && is_rebuilding(dev)) {
|
|
end_migration(dev, map_state);
|
|
super->updates_pending++;
|
|
} else if (map_state == IMSM_T_STATE_DEGRADED &&
|
|
map->map_state != map_state &&
|
|
!dev->vol.migr_state) {
|
|
dprintf("imsm: mark degraded\n");
|
|
map->map_state = map_state;
|
|
super->updates_pending++;
|
|
} else if (map_state == IMSM_T_STATE_FAILED &&
|
|
map->map_state != map_state) {
|
|
dprintf("imsm: mark failed\n");
|
|
end_migration(dev, map_state);
|
|
super->updates_pending++;
|
|
}
|
|
}
|
|
|
|
static int store_imsm_mpb(int fd, struct intel_super *super)
|
|
{
|
|
struct imsm_super *mpb = super->anchor;
|
|
__u32 mpb_size = __le32_to_cpu(mpb->mpb_size);
|
|
unsigned long long dsize;
|
|
unsigned long long sectors;
|
|
|
|
get_dev_size(fd, NULL, &dsize);
|
|
|
|
if (mpb_size > 512) {
|
|
/* -1 to account for anchor */
|
|
sectors = mpb_sectors(mpb) - 1;
|
|
|
|
/* write the extended mpb to the sectors preceeding the anchor */
|
|
if (lseek64(fd, dsize - (512 * (2 + sectors)), SEEK_SET) < 0)
|
|
return 1;
|
|
|
|
if (write(fd, super->buf + 512, 512 * sectors) != 512 * sectors)
|
|
return 1;
|
|
}
|
|
|
|
/* first block is stored on second to last sector of the disk */
|
|
if (lseek64(fd, dsize - (512 * 2), SEEK_SET) < 0)
|
|
return 1;
|
|
|
|
if (write(fd, super->buf, 512) != 512)
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void imsm_sync_metadata(struct supertype *container)
|
|
{
|
|
struct intel_super *super = container->sb;
|
|
|
|
if (!super->updates_pending)
|
|
return;
|
|
|
|
write_super_imsm(super, 0);
|
|
|
|
super->updates_pending = 0;
|
|
}
|
|
|
|
static struct dl *imsm_readd(struct intel_super *super, int idx, struct active_array *a)
|
|
{
|
|
struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member);
|
|
int i = get_imsm_disk_idx(dev, idx);
|
|
struct dl *dl;
|
|
|
|
for (dl = super->disks; dl; dl = dl->next)
|
|
if (dl->index == i)
|
|
break;
|
|
|
|
if (dl && __le32_to_cpu(dl->disk.status) & FAILED_DISK)
|
|
dl = NULL;
|
|
|
|
if (dl)
|
|
dprintf("%s: found %x:%x\n", __func__, dl->major, dl->minor);
|
|
|
|
return dl;
|
|
}
|
|
|
|
static struct dl *imsm_add_spare(struct intel_super *super, int slot, struct active_array *a)
|
|
{
|
|
struct imsm_dev *dev = get_imsm_dev(super, a->info.container_member);
|
|
int idx = get_imsm_disk_idx(dev, slot);
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
unsigned long long esize;
|
|
unsigned long long pos;
|
|
struct mdinfo *d;
|
|
struct extent *ex;
|
|
int j;
|
|
int found;
|
|
__u32 array_start;
|
|
__u32 status;
|
|
struct dl *dl;
|
|
|
|
for (dl = super->disks; dl; dl = dl->next) {
|
|
/* If in this array, skip */
|
|
for (d = a->info.devs ; d ; d = d->next)
|
|
if (d->state_fd >= 0 &&
|
|
d->disk.major == dl->major &&
|
|
d->disk.minor == dl->minor) {
|
|
dprintf("%x:%x already in array\n", dl->major, dl->minor);
|
|
break;
|
|
}
|
|
if (d)
|
|
continue;
|
|
|
|
/* skip in use or failed drives */
|
|
status = __le32_to_cpu(dl->disk.status);
|
|
if (status & FAILED_DISK || idx == dl->index) {
|
|
dprintf("%x:%x status ( %s%s)\n",
|
|
dl->major, dl->minor,
|
|
status & FAILED_DISK ? "failed " : "",
|
|
idx == dl->index ? "in use " : "");
|
|
continue;
|
|
}
|
|
|
|
/* Does this unused device have the requisite free space?
|
|
* We need a->info.component_size sectors
|
|
*/
|
|
ex = get_extents(super, dl);
|
|
if (!ex) {
|
|
dprintf("cannot get extents\n");
|
|
continue;
|
|
}
|
|
found = 0;
|
|
j = 0;
|
|
pos = 0;
|
|
array_start = __le32_to_cpu(map->pba_of_lba0);
|
|
|
|
do {
|
|
/* check that we can start at pba_of_lba0 with
|
|
* a->info.component_size of space
|
|
*/
|
|
esize = ex[j].start - pos;
|
|
if (array_start >= pos &&
|
|
array_start + a->info.component_size < ex[j].start) {
|
|
found = 1;
|
|
break;
|
|
}
|
|
pos = ex[j].start + ex[j].size;
|
|
j++;
|
|
|
|
} while (ex[j-1].size);
|
|
|
|
free(ex);
|
|
if (!found) {
|
|
dprintf("%x:%x does not have %llu at %d\n",
|
|
dl->major, dl->minor,
|
|
a->info.component_size,
|
|
__le32_to_cpu(map->pba_of_lba0));
|
|
/* No room */
|
|
continue;
|
|
} else
|
|
break;
|
|
}
|
|
|
|
return dl;
|
|
}
|
|
|
|
static struct mdinfo *imsm_activate_spare(struct active_array *a,
|
|
struct metadata_update **updates)
|
|
{
|
|
/**
|
|
* Find a device with unused free space and use it to replace a
|
|
* failed/vacant region in an array. We replace failed regions one a
|
|
* array at a time. The result is that a new spare disk will be added
|
|
* to the first failed array and after the monitor has finished
|
|
* propagating failures the remainder will be consumed.
|
|
*
|
|
* FIXME add a capability for mdmon to request spares from another
|
|
* container.
|
|
*/
|
|
|
|
struct intel_super *super = a->container->sb;
|
|
int inst = a->info.container_member;
|
|
struct imsm_dev *dev = get_imsm_dev(super, inst);
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
int failed = a->info.array.raid_disks;
|
|
struct mdinfo *rv = NULL;
|
|
struct mdinfo *d;
|
|
struct mdinfo *di;
|
|
struct metadata_update *mu;
|
|
struct dl *dl;
|
|
struct imsm_update_activate_spare *u;
|
|
int num_spares = 0;
|
|
int i;
|
|
|
|
for (d = a->info.devs ; d ; d = d->next) {
|
|
if ((d->curr_state & DS_FAULTY) &&
|
|
d->state_fd >= 0)
|
|
/* wait for Removal to happen */
|
|
return NULL;
|
|
if (d->state_fd >= 0)
|
|
failed--;
|
|
}
|
|
|
|
dprintf("imsm: activate spare: inst=%d failed=%d (%d) level=%d\n",
|
|
inst, failed, a->info.array.raid_disks, a->info.array.level);
|
|
if (imsm_check_degraded(super, dev, failed) != IMSM_T_STATE_DEGRADED)
|
|
return NULL;
|
|
|
|
/* For each slot, if it is not working, find a spare */
|
|
for (i = 0; i < a->info.array.raid_disks; i++) {
|
|
for (d = a->info.devs ; d ; d = d->next)
|
|
if (d->disk.raid_disk == i)
|
|
break;
|
|
dprintf("found %d: %p %x\n", i, d, d?d->curr_state:0);
|
|
if (d && (d->state_fd >= 0))
|
|
continue;
|
|
|
|
/*
|
|
* OK, this device needs recovery. Try to re-add the previous
|
|
* occupant of this slot, if this fails add a new spare
|
|
*/
|
|
dl = imsm_readd(super, i, a);
|
|
if (!dl)
|
|
dl = imsm_add_spare(super, i, a);
|
|
if (!dl)
|
|
continue;
|
|
|
|
/* found a usable disk with enough space */
|
|
di = malloc(sizeof(*di));
|
|
if (!di)
|
|
continue;
|
|
memset(di, 0, sizeof(*di));
|
|
|
|
/* dl->index will be -1 in the case we are activating a
|
|
* pristine spare. imsm_process_update() will create a
|
|
* new index in this case. Once a disk is found to be
|
|
* failed in all member arrays it is kicked from the
|
|
* metadata
|
|
*/
|
|
di->disk.number = dl->index;
|
|
|
|
/* (ab)use di->devs to store a pointer to the device
|
|
* we chose
|
|
*/
|
|
di->devs = (struct mdinfo *) dl;
|
|
|
|
di->disk.raid_disk = i;
|
|
di->disk.major = dl->major;
|
|
di->disk.minor = dl->minor;
|
|
di->disk.state = 0;
|
|
di->data_offset = __le32_to_cpu(map->pba_of_lba0);
|
|
di->component_size = a->info.component_size;
|
|
di->container_member = inst;
|
|
di->next = rv;
|
|
rv = di;
|
|
num_spares++;
|
|
dprintf("%x:%x to be %d at %llu\n", dl->major, dl->minor,
|
|
i, di->data_offset);
|
|
|
|
break;
|
|
}
|
|
|
|
if (!rv)
|
|
/* No spares found */
|
|
return rv;
|
|
/* Now 'rv' has a list of devices to return.
|
|
* Create a metadata_update record to update the
|
|
* disk_ord_tbl for the array
|
|
*/
|
|
mu = malloc(sizeof(*mu));
|
|
if (mu) {
|
|
mu->buf = malloc(sizeof(struct imsm_update_activate_spare) * num_spares);
|
|
if (mu->buf == NULL) {
|
|
free(mu);
|
|
mu = NULL;
|
|
}
|
|
}
|
|
if (!mu) {
|
|
while (rv) {
|
|
struct mdinfo *n = rv->next;
|
|
|
|
free(rv);
|
|
rv = n;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
mu->space = NULL;
|
|
mu->len = sizeof(struct imsm_update_activate_spare) * num_spares;
|
|
mu->next = *updates;
|
|
u = (struct imsm_update_activate_spare *) mu->buf;
|
|
|
|
for (di = rv ; di ; di = di->next) {
|
|
u->type = update_activate_spare;
|
|
u->dl = (struct dl *) di->devs;
|
|
di->devs = NULL;
|
|
u->slot = di->disk.raid_disk;
|
|
u->array = inst;
|
|
u->next = u + 1;
|
|
u++;
|
|
}
|
|
(u-1)->next = NULL;
|
|
*updates = mu;
|
|
|
|
return rv;
|
|
}
|
|
|
|
static int disks_overlap(struct imsm_dev *d1, struct imsm_dev *d2)
|
|
{
|
|
struct imsm_map *m1 = get_imsm_map(d1, 0);
|
|
struct imsm_map *m2 = get_imsm_map(d2, 0);
|
|
int i;
|
|
int j;
|
|
int idx;
|
|
|
|
for (i = 0; i < m1->num_members; i++) {
|
|
idx = get_imsm_disk_idx(d1, i);
|
|
for (j = 0; j < m2->num_members; j++)
|
|
if (idx == get_imsm_disk_idx(d2, j))
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void imsm_delete(struct intel_super *super, struct dl **dlp, int index);
|
|
|
|
static void imsm_process_update(struct supertype *st,
|
|
struct metadata_update *update)
|
|
{
|
|
/**
|
|
* crack open the metadata_update envelope to find the update record
|
|
* update can be one of:
|
|
* update_activate_spare - a spare device has replaced a failed
|
|
* device in an array, update the disk_ord_tbl. If this disk is
|
|
* present in all member arrays then also clear the SPARE_DISK
|
|
* flag
|
|
*/
|
|
struct intel_super *super = st->sb;
|
|
struct imsm_super *mpb;
|
|
enum imsm_update_type type = *(enum imsm_update_type *) update->buf;
|
|
|
|
/* update requires a larger buf but the allocation failed */
|
|
if (super->next_len && !super->next_buf) {
|
|
super->next_len = 0;
|
|
return;
|
|
}
|
|
|
|
if (super->next_buf) {
|
|
memcpy(super->next_buf, super->buf, super->len);
|
|
free(super->buf);
|
|
super->len = super->next_len;
|
|
super->buf = super->next_buf;
|
|
|
|
super->next_len = 0;
|
|
super->next_buf = NULL;
|
|
}
|
|
|
|
mpb = super->anchor;
|
|
|
|
switch (type) {
|
|
case update_activate_spare: {
|
|
struct imsm_update_activate_spare *u = (void *) update->buf;
|
|
struct imsm_dev *dev = get_imsm_dev(super, u->array);
|
|
struct imsm_map *map = get_imsm_map(dev, 0);
|
|
struct imsm_map *migr_map;
|
|
struct active_array *a;
|
|
struct imsm_disk *disk;
|
|
__u32 status;
|
|
__u8 to_state;
|
|
struct dl *dl;
|
|
unsigned int found;
|
|
int failed;
|
|
int victim = get_imsm_disk_idx(dev, u->slot);
|
|
int i;
|
|
|
|
for (dl = super->disks; dl; dl = dl->next)
|
|
if (dl == u->dl)
|
|
break;
|
|
|
|
if (!dl) {
|
|
fprintf(stderr, "error: imsm_activate_spare passed "
|
|
"an unknown disk (index: %d)\n",
|
|
u->dl->index);
|
|
return;
|
|
}
|
|
|
|
super->updates_pending++;
|
|
|
|
/* count failures (excluding rebuilds and the victim)
|
|
* to determine map[0] state
|
|
*/
|
|
failed = 0;
|
|
for (i = 0; i < map->num_members; i++) {
|
|
if (i == u->slot)
|
|
continue;
|
|
disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i));
|
|
if (!disk ||
|
|
__le32_to_cpu(disk->status) & FAILED_DISK)
|
|
failed++;
|
|
}
|
|
|
|
/* adding a pristine spare, assign a new index */
|
|
if (dl->index < 0) {
|
|
dl->index = super->anchor->num_disks;
|
|
super->anchor->num_disks++;
|
|
}
|
|
disk = &dl->disk;
|
|
status = __le32_to_cpu(disk->status);
|
|
status |= CONFIGURED_DISK;
|
|
status &= ~SPARE_DISK;
|
|
disk->status = __cpu_to_le32(status);
|
|
|
|
/* mark rebuild */
|
|
to_state = imsm_check_degraded(super, dev, failed);
|
|
map->map_state = IMSM_T_STATE_DEGRADED;
|
|
migrate(dev, to_state, 1);
|
|
migr_map = get_imsm_map(dev, 1);
|
|
set_imsm_ord_tbl_ent(map, u->slot, dl->index);
|
|
set_imsm_ord_tbl_ent(migr_map, u->slot, dl->index | IMSM_ORD_REBUILD);
|
|
|
|
/* count arrays using the victim in the metadata */
|
|
found = 0;
|
|
for (a = st->arrays; a ; a = a->next) {
|
|
dev = get_imsm_dev(super, a->info.container_member);
|
|
for (i = 0; i < map->num_members; i++)
|
|
if (victim == get_imsm_disk_idx(dev, i))
|
|
found++;
|
|
}
|
|
|
|
/* delete the victim if it is no longer being
|
|
* utilized anywhere
|
|
*/
|
|
if (!found) {
|
|
struct dl **dlp;
|
|
|
|
/* We know that 'manager' isn't touching anything,
|
|
* so it is safe to delete
|
|
*/
|
|
for (dlp = &super->disks; *dlp; dlp = &(*dlp)->next)
|
|
if ((*dlp)->index == victim)
|
|
break;
|
|
|
|
/* victim may be on the missing list */
|
|
if (!*dlp)
|
|
for (dlp = &super->missing; *dlp; dlp = &(*dlp)->next)
|
|
if ((*dlp)->index == victim)
|
|
break;
|
|
imsm_delete(super, dlp, victim);
|
|
}
|
|
break;
|
|
}
|
|
case update_create_array: {
|
|
/* someone wants to create a new array, we need to be aware of
|
|
* a few races/collisions:
|
|
* 1/ 'Create' called by two separate instances of mdadm
|
|
* 2/ 'Create' versus 'activate_spare': mdadm has chosen
|
|
* devices that have since been assimilated via
|
|
* activate_spare.
|
|
* In the event this update can not be carried out mdadm will
|
|
* (FIX ME) notice that its update did not take hold.
|
|
*/
|
|
struct imsm_update_create_array *u = (void *) update->buf;
|
|
struct imsm_dev *dev;
|
|
struct imsm_map *map, *new_map;
|
|
unsigned long long start, end;
|
|
unsigned long long new_start, new_end;
|
|
int i;
|
|
int overlap = 0;
|
|
|
|
/* handle racing creates: first come first serve */
|
|
if (u->dev_idx < mpb->num_raid_devs) {
|
|
dprintf("%s: subarray %d already defined\n",
|
|
__func__, u->dev_idx);
|
|
return;
|
|
}
|
|
|
|
/* check update is next in sequence */
|
|
if (u->dev_idx != mpb->num_raid_devs) {
|
|
dprintf("%s: can not create array %d expected index %d\n",
|
|
__func__, u->dev_idx, mpb->num_raid_devs);
|
|
return;
|
|
}
|
|
|
|
new_map = get_imsm_map(&u->dev, 0);
|
|
new_start = __le32_to_cpu(new_map->pba_of_lba0);
|
|
new_end = new_start + __le32_to_cpu(new_map->blocks_per_member);
|
|
|
|
/* handle activate_spare versus create race:
|
|
* check to make sure that overlapping arrays do not include
|
|
* overalpping disks
|
|
*/
|
|
for (i = 0; i < mpb->num_raid_devs; i++) {
|
|
dev = get_imsm_dev(super, i);
|
|
map = get_imsm_map(dev, 0);
|
|
start = __le32_to_cpu(map->pba_of_lba0);
|
|
end = start + __le32_to_cpu(map->blocks_per_member);
|
|
if ((new_start >= start && new_start <= end) ||
|
|
(start >= new_start && start <= new_end))
|
|
overlap = 1;
|
|
if (overlap && disks_overlap(dev, &u->dev)) {
|
|
dprintf("%s: arrays overlap\n", __func__);
|
|
return;
|
|
}
|
|
}
|
|
/* check num_members sanity */
|
|
if (new_map->num_members > mpb->num_disks) {
|
|
dprintf("%s: num_disks out of range\n", __func__);
|
|
return;
|
|
}
|
|
|
|
/* check that prepare update was successful */
|
|
if (!update->space) {
|
|
dprintf("%s: prepare update failed\n", __func__);
|
|
return;
|
|
}
|
|
|
|
super->updates_pending++;
|
|
dev = update->space;
|
|
map = get_imsm_map(dev, 0);
|
|
update->space = NULL;
|
|
imsm_copy_dev(dev, &u->dev);
|
|
map = get_imsm_map(dev, 0);
|
|
super->dev_tbl[u->dev_idx] = dev;
|
|
mpb->num_raid_devs++;
|
|
|
|
/* fix up flags */
|
|
for (i = 0; i < map->num_members; i++) {
|
|
struct imsm_disk *disk;
|
|
__u32 status;
|
|
|
|
disk = get_imsm_disk(super, get_imsm_disk_idx(dev, i));
|
|
status = __le32_to_cpu(disk->status);
|
|
status |= CONFIGURED_DISK;
|
|
status &= ~SPARE_DISK;
|
|
disk->status = __cpu_to_le32(status);
|
|
}
|
|
break;
|
|
}
|
|
case update_add_disk:
|
|
|
|
/* we may be able to repair some arrays if disks are
|
|
* being added */
|
|
if (super->add) {
|
|
struct active_array *a;
|
|
|
|
super->updates_pending++;
|
|
for (a = st->arrays; a; a = a->next)
|
|
a->check_degraded = 1;
|
|
}
|
|
/* add some spares to the metadata */
|
|
while (super->add) {
|
|
struct dl *al;
|
|
|
|
al = super->add;
|
|
super->add = al->next;
|
|
al->next = super->disks;
|
|
super->disks = al;
|
|
dprintf("%s: added %x:%x\n",
|
|
__func__, al->major, al->minor);
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void imsm_prepare_update(struct supertype *st,
|
|
struct metadata_update *update)
|
|
{
|
|
/**
|
|
* Allocate space to hold new disk entries, raid-device entries or a new
|
|
* mpb if necessary. The manager synchronously waits for updates to
|
|
* complete in the monitor, so new mpb buffers allocated here can be
|
|
* integrated by the monitor thread without worrying about live pointers
|
|
* in the manager thread.
|
|
*/
|
|
enum imsm_update_type type = *(enum imsm_update_type *) update->buf;
|
|
struct intel_super *super = st->sb;
|
|
struct imsm_super *mpb = super->anchor;
|
|
size_t buf_len;
|
|
size_t len = 0;
|
|
|
|
switch (type) {
|
|
case update_create_array: {
|
|
struct imsm_update_create_array *u = (void *) update->buf;
|
|
|
|
len = sizeof_imsm_dev(&u->dev, 1);
|
|
update->space = malloc(len);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* check if we need a larger metadata buffer */
|
|
if (super->next_buf)
|
|
buf_len = super->next_len;
|
|
else
|
|
buf_len = super->len;
|
|
|
|
if (__le32_to_cpu(mpb->mpb_size) + len > buf_len) {
|
|
/* ok we need a larger buf than what is currently allocated
|
|
* if this allocation fails process_update will notice that
|
|
* ->next_len is set and ->next_buf is NULL
|
|
*/
|
|
buf_len = ROUND_UP(__le32_to_cpu(mpb->mpb_size) + len, 512);
|
|
if (super->next_buf)
|
|
free(super->next_buf);
|
|
|
|
super->next_len = buf_len;
|
|
if (posix_memalign(&super->next_buf, buf_len, 512) != 0)
|
|
super->next_buf = NULL;
|
|
}
|
|
}
|
|
|
|
/* must be called while manager is quiesced */
|
|
static void imsm_delete(struct intel_super *super, struct dl **dlp, int index)
|
|
{
|
|
struct imsm_super *mpb = super->anchor;
|
|
struct dl *iter;
|
|
struct imsm_dev *dev;
|
|
struct imsm_map *map;
|
|
int i, j, num_members;
|
|
__u32 ord;
|
|
|
|
dprintf("%s: deleting device[%d] from imsm_super\n",
|
|
__func__, index);
|
|
|
|
/* shift all indexes down one */
|
|
for (iter = super->disks; iter; iter = iter->next)
|
|
if (iter->index > index)
|
|
iter->index--;
|
|
for (iter = super->missing; iter; iter = iter->next)
|
|
if (iter->index > index)
|
|
iter->index--;
|
|
|
|
for (i = 0; i < mpb->num_raid_devs; i++) {
|
|
dev = get_imsm_dev(super, i);
|
|
map = get_imsm_map(dev, 0);
|
|
num_members = map->num_members;
|
|
for (j = 0; j < num_members; j++) {
|
|
/* update ord entries being careful not to propagate
|
|
* ord-flags to the first map
|
|
*/
|
|
ord = get_imsm_ord_tbl_ent(dev, j);
|
|
|
|
if (ord_to_idx(ord) <= index)
|
|
continue;
|
|
|
|
map = get_imsm_map(dev, 0);
|
|
set_imsm_ord_tbl_ent(map, j, ord_to_idx(ord - 1));
|
|
map = get_imsm_map(dev, 1);
|
|
if (map)
|
|
set_imsm_ord_tbl_ent(map, j, ord - 1);
|
|
}
|
|
}
|
|
|
|
mpb->num_disks--;
|
|
super->updates_pending++;
|
|
if (*dlp) {
|
|
struct dl *dl = *dlp;
|
|
|
|
*dlp = (*dlp)->next;
|
|
__free_imsm_disk(dl);
|
|
}
|
|
}
|
|
#endif /* MDASSEMBLE */
|
|
|
|
struct superswitch super_imsm = {
|
|
#ifndef MDASSEMBLE
|
|
.examine_super = examine_super_imsm,
|
|
.brief_examine_super = brief_examine_super_imsm,
|
|
.detail_super = detail_super_imsm,
|
|
.brief_detail_super = brief_detail_super_imsm,
|
|
.write_init_super = write_init_super_imsm,
|
|
.validate_geometry = validate_geometry_imsm,
|
|
.add_to_super = add_to_super_imsm,
|
|
#endif
|
|
.match_home = match_home_imsm,
|
|
.uuid_from_super= uuid_from_super_imsm,
|
|
.getinfo_super = getinfo_super_imsm,
|
|
.update_super = update_super_imsm,
|
|
|
|
.avail_size = avail_size_imsm,
|
|
|
|
.compare_super = compare_super_imsm,
|
|
|
|
.load_super = load_super_imsm,
|
|
.init_super = init_super_imsm,
|
|
.store_super = store_zero_imsm,
|
|
.free_super = free_super_imsm,
|
|
.match_metadata_desc = match_metadata_desc_imsm,
|
|
.container_content = container_content_imsm,
|
|
|
|
.external = 1,
|
|
|
|
#ifndef MDASSEMBLE
|
|
/* for mdmon */
|
|
.open_new = imsm_open_new,
|
|
.load_super = load_super_imsm,
|
|
.set_array_state= imsm_set_array_state,
|
|
.set_disk = imsm_set_disk,
|
|
.sync_metadata = imsm_sync_metadata,
|
|
.activate_spare = imsm_activate_spare,
|
|
.process_update = imsm_process_update,
|
|
.prepare_update = imsm_prepare_update,
|
|
#endif /* MDASSEMBLE */
|
|
};
|