d4f9ad2de8
Due to the wrong variable being used, this part of --detail wasn't working at all. Signed-off-by: NeilBrown <neilb@suse.de>
627 lines
17 KiB
C
627 lines
17 KiB
C
/*
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* mdadm - manage Linux "md" devices aka RAID arrays.
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*
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* Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Neil Brown
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* Email: <neilb@suse.de>
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*/
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#include "mdadm.h"
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#include "md_p.h"
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#include "md_u.h"
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#include <dirent.h>
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int Detail(char *dev, int brief, int export, int test, char *homehost)
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{
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/*
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* Print out details for an md array by using
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* GET_ARRAY_INFO and GET_DISK_INFO ioctl calls
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*/
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int fd = open(dev, O_RDONLY);
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int vers;
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mdu_array_info_t array;
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mdu_disk_info_t *disks;
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int next;
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int d;
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time_t atime;
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char *c;
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char *devices = NULL;
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int spares = 0;
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struct stat stb;
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int is_26 = get_linux_version() >= 2006000;
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int is_rebuilding = 0;
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int failed = 0;
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struct supertype *st;
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int max_disks = MD_SB_DISKS; /* just a default */
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struct mdinfo info;
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struct mdinfo *sra;
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char *member = NULL;
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char *container = NULL;
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int rv = test ? 4 : 1;
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int avail_disks = 0;
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char *avail;
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if (fd < 0) {
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fprintf(stderr, Name ": cannot open %s: %s\n",
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dev, strerror(errno));
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return rv;
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}
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vers = md_get_version(fd);
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if (vers < 0) {
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fprintf(stderr, Name ": %s does not appear to be an md device\n",
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dev);
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close(fd);
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return rv;
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}
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if (vers < 9000) {
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fprintf(stderr, Name ": cannot get detail for md device %s: driver version too old.\n",
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dev);
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close(fd);
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return rv;
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}
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if (ioctl(fd, GET_ARRAY_INFO, &array)<0) {
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if (errno == ENODEV)
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fprintf(stderr, Name ": md device %s does not appear to be active.\n",
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dev);
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else
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fprintf(stderr, Name ": cannot get array detail for %s: %s\n",
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dev, strerror(errno));
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close(fd);
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return rv;
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}
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sra = sysfs_read(fd, 0, GET_VERSION);
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st = super_by_fd(fd);
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if (fstat(fd, &stb) != 0 && !S_ISBLK(stb.st_mode))
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stb.st_rdev = 0;
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rv = 0;
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if (st)
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max_disks = st->max_devs;
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if (sra && is_subarray(sra->text_version) &&
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strchr(sra->text_version+1, '/')) {
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/* This is a subarray of some container.
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* We want the name of the container, and the member
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*/
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char *s = strchr(sra->text_version+1, '/');
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int dn;
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*s++ = '\0';
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member = s;
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dn = devname2devnum(sra->text_version+1);
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container = map_dev(dev2major(dn), dev2minor(dn), 1);
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}
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/* try to load a superblock */
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if (st) for (d = 0; d < max_disks; d++) {
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mdu_disk_info_t disk;
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char *dv;
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int fd2;
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int err;
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disk.number = d;
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if (ioctl(fd, GET_DISK_INFO, &disk) < 0)
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continue;
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if (d >= array.raid_disks &&
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disk.major == 0 &&
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disk.minor == 0)
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continue;
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if (array.raid_disks > 0 &&
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(disk.state & (1 << MD_DISK_ACTIVE)) == 0)
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continue;
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dv = map_dev(disk.major, disk.minor, 1);
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if (!dv)
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continue;
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fd2 = dev_open(dv, O_RDONLY);
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if (fd2 < 0)
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continue;
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if (st->sb)
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st->ss->free_super(st);
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err = st->ss->load_super(st, fd2, NULL);
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close(fd2);
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if (err)
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continue;
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st->ss->getinfo_super(st, &info);
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if (array.raid_disks != 0 && /* container */
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(info.array.ctime != array.ctime ||
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info.array.level != array.level)) {
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st->ss->free_super(st);
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continue;
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}
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/* some formats (imsm) have free-floating-spares
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* with a uuid of uuid_match_any, they don't
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* have very good info about the rest of the
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* container, so keep searching when
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* encountering such a device. Otherwise, stop
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* after the first successful call to
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* ->load_super.
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*/
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if (memcmp(uuid_match_any,
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info.uuid,
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sizeof(uuid_match_any)) == 0) {
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st->ss->free_super(st);
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continue;
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}
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break;
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}
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/* Ok, we have some info to print... */
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c = map_num(pers, array.level);
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if (export) {
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if (array.raid_disks) {
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if (c)
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printf("MD_LEVEL=%s\n", c);
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printf("MD_DEVICES=%d\n", array.raid_disks);
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} else {
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printf("MD_LEVEL=container\n");
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printf("MD_DEVICES=%d\n", array.nr_disks);
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}
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if (container) {
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printf("MD_CONTAINER=%s\n", container);
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printf("MD_MEMBER=%s\n", member);
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} else {
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if (sra && sra->array.major_version < 0)
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printf("MD_METADATA=%s\n", sra->text_version);
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else
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printf("MD_METADATA=%d.%d\n",
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array.major_version, array.minor_version);
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}
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if (st && st->sb) {
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char nbuf[64];
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struct map_ent *mp, *map = NULL;
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fname_from_uuid(st, &info, nbuf, ':');
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printf("MD_UUID=%s\n", nbuf+5);
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mp = map_by_uuid(&map, info.uuid);
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if (mp && mp->path &&
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strncmp(mp->path, "/dev/md/", 8) == 0)
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printf("MD_DEVNAME=%s\n", mp->path+8);
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if (st->ss->export_detail_super)
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st->ss->export_detail_super(st);
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} else {
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struct map_ent *mp, *map = NULL;
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char nbuf[64];
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mp = map_by_devnum(&map, fd2devnum(fd));
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if (mp) {
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__fname_from_uuid(mp->uuid, 0, nbuf, ':');
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printf("MD_UUID=%s\n", nbuf+5);
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}
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if (mp && mp->path &&
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strncmp(mp->path, "/dev/md/", 8) == 0)
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printf("MD_DEVNAME=%s\n", mp->path+8);
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}
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goto out;
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}
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disks = malloc(max_disks * sizeof(mdu_disk_info_t));
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for (d=0; d<max_disks; d++) {
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disks[d].state = (1<<MD_DISK_REMOVED);
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disks[d].major = disks[d].minor = 0;
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disks[d].number = disks[d].raid_disk = d;
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}
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next = array.raid_disks;
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for (d=0; d < max_disks; d++) {
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mdu_disk_info_t disk;
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disk.number = d;
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if (ioctl(fd, GET_DISK_INFO, &disk) < 0) {
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if (d < array.raid_disks)
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fprintf(stderr, Name ": cannot get device detail for device %d: %s\n",
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d, strerror(errno));
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continue;
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}
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if (disk.major == 0 && disk.minor == 0)
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continue;
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if (disk.raid_disk >= 0 && disk.raid_disk < array.raid_disks)
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disks[disk.raid_disk] = disk;
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else if (next < max_disks)
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disks[next++] = disk;
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}
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avail = calloc(array.raid_disks, 1);
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for (d= 0; d < array.raid_disks; d++) {
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mdu_disk_info_t disk = disks[d];
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if ((disk.state & (1<<MD_DISK_SYNC))) {
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avail_disks ++;
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avail[d] = 1;
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}
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}
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if (brief) {
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mdu_bitmap_file_t bmf;
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printf("ARRAY %s", dev);
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if (brief > 1) {
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if (array.raid_disks)
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printf(" level=%s num-devices=%d",
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c?c:"-unknown-",
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array.raid_disks );
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else
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printf(" level=container num-devices=%d",
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array.nr_disks);
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}
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if (container) {
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printf(" container=%s", container);
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printf(" member=%s", member);
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} else {
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if (sra && sra->array.major_version < 0)
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printf(" metadata=%s", sra->text_version);
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else
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printf(" metadata=%d.%d",
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array.major_version, array.minor_version);
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}
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/* Only try GET_BITMAP_FILE for 0.90.01 and later */
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if (vers >= 9001 &&
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ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
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bmf.pathname[0]) {
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printf(" bitmap=%s", bmf.pathname);
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}
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} else {
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mdu_bitmap_file_t bmf;
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unsigned long long larray_size;
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struct mdstat_ent *ms = mdstat_read(0, 0);
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struct mdstat_ent *e;
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int devnum = array.md_minor;
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if (major(stb.st_rdev) == (unsigned)get_mdp_major())
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devnum = -1 - devnum;
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for (e=ms; e; e=e->next)
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if (e->devnum == devnum)
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break;
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if (!get_dev_size(fd, NULL, &larray_size))
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larray_size = 0;
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printf("%s:\n", dev);
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if (container)
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printf(" Container : %s, member %s\n", container, member);
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else {
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if (sra && sra->array.major_version < 0)
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printf(" Version : %s\n", sra->text_version);
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else
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printf(" Version : %d.%d\n",
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array.major_version, array.minor_version);
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}
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atime = array.ctime;
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if (atime)
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printf(" Creation Time : %.24s\n", ctime(&atime));
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if (array.raid_disks == 0) c = "container";
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printf(" Raid Level : %s\n", c?c:"-unknown-");
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if (larray_size)
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printf(" Array Size : %llu%s\n", (larray_size>>10), human_size(larray_size));
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if (array.level >= 1) {
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if (array.major_version != 0 &&
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(larray_size >= 0xFFFFFFFFULL|| array.size == 0)) {
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unsigned long long dsize = get_component_size(fd);
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if (dsize > 0)
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printf(" Used Dev Size : %llu%s\n",
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dsize/2,
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human_size((long long)dsize<<9));
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else
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printf(" Used Dev Size : unknown\n");
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} else
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printf(" Used Dev Size : %d%s\n", array.size,
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human_size((long long)array.size<<10));
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}
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if (array.raid_disks)
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printf(" Raid Devices : %d\n", array.raid_disks);
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printf(" Total Devices : %d\n", array.nr_disks);
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if (!container &&
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((sra == NULL && array.major_version == 0) ||
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(sra && sra->array.major_version == 0)))
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printf("Preferred Minor : %d\n", array.md_minor);
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if (sra == NULL || sra->array.major_version >= 0)
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printf(" Persistence : Superblock is %spersistent\n",
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array.not_persistent?"not ":"");
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printf("\n");
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/* Only try GET_BITMAP_FILE for 0.90.01 and later */
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if (vers >= 9001 &&
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ioctl(fd, GET_BITMAP_FILE, &bmf) == 0 &&
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bmf.pathname[0]) {
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printf(" Intent Bitmap : %s\n", bmf.pathname);
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printf("\n");
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} else if (array.state & (1<<MD_SB_BITMAP_PRESENT))
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printf(" Intent Bitmap : Internal\n\n");
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atime = array.utime;
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if (atime)
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printf(" Update Time : %.24s\n", ctime(&atime));
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if (array.raid_disks) {
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char *st;
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if (avail_disks == array.raid_disks)
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st = "";
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else if (!enough(array.level, array.raid_disks,
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array.layout, 1, avail, avail_disks))
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st = ", FAILED";
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else
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st = ", degraded";
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printf(" State : %s%s%s%s\n",
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(array.state&(1<<MD_SB_CLEAN))?"clean":"active",
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st,
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(!e || e->percent < 0) ? "" :
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(e->resync) ? ", resyncing": ", recovering",
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larray_size ? "": ", Not Started");
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}
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if (array.raid_disks)
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printf(" Active Devices : %d\n", array.active_disks);
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printf("Working Devices : %d\n", array.working_disks);
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if (array.raid_disks) {
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printf(" Failed Devices : %d\n", array.failed_disks);
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printf(" Spare Devices : %d\n", array.spare_disks);
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}
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printf("\n");
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if (array.level == 5) {
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c = map_num(r5layout, array.layout);
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printf(" Layout : %s\n", c?c:"-unknown-");
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}
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if (array.level == 6) {
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c = map_num(r6layout, array.layout);
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printf(" Layout : %s\n", c?c:"-unknown-");
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}
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if (array.level == 10) {
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printf(" Layout :");
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print_r10_layout(array.layout);
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printf("\n");
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}
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switch (array.level) {
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case 0:
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case 4:
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case 5:
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case 10:
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case 6:
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if (array.chunk_size)
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printf(" Chunk Size : %dK\n\n",
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array.chunk_size/1024);
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break;
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case -1:
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printf(" Rounding : %dK\n\n", array.chunk_size/1024);
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break;
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default: break;
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}
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if (e && e->percent >= 0) {
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printf(" Re%s Status : %d%% complete\n",
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(st && st->sb && info.reshape_active)?
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"shape":"build",
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e->percent);
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is_rebuilding = 1;
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}
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free_mdstat(ms);
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if (st->sb && info.reshape_active) {
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#if 0
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This is pretty boring
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printf(" Reshape pos'n : %llu%s\n", (unsigned long long) info.reshape_progress<<9,
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human_size((unsigned long long)info.reshape_progress<<9));
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#endif
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if (info.delta_disks > 0)
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printf(" Delta Devices : %d, (%d->%d)\n",
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info.delta_disks, array.raid_disks - info.delta_disks, array.raid_disks);
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if (info.delta_disks < 0)
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printf(" Delta Devices : %d, (%d->%d)\n",
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info.delta_disks, array.raid_disks, array.raid_disks + info.delta_disks);
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if (info.new_level != array.level) {
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char *c = map_num(pers, info.new_level);
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printf(" New Level : %s\n", c?c:"-unknown-");
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}
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if (info.new_level != array.level ||
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info.new_layout != array.layout) {
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if (info.new_level == 5) {
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char *c = map_num(r5layout, info.new_layout);
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printf(" New Layout : %s\n",
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c?c:"-unknown-");
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}
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if (info.new_level == 6) {
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char *c = map_num(r6layout, info.new_layout);
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printf(" New Layout : %s\n",
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c?c:"-unknown-");
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}
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if (info.new_level == 10) {
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printf(" New Layout : near=%d, %s=%d\n",
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info.new_layout&255,
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(info.new_layout&0x10000)?"offset":"far",
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(info.new_layout>>8)&255);
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}
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}
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if (info.new_chunk != array.chunk_size)
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printf(" New Chunksize : %dK\n", info.new_chunk/1024);
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printf("\n");
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} else if (e && e->percent >= 0)
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printf("\n");
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if (st && st->sb)
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st->ss->detail_super(st, homehost);
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if (array.raid_disks == 0 && sra && sra->array.major_version == -1
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&& sra->array.minor_version == -2 && sra->text_version[0] != '/') {
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/* This looks like a container. Find any active arrays
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* That claim to be a member.
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*/
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DIR *dir = opendir("/sys/block");
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struct dirent *de;
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printf(" Member Arrays :");
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while (dir && (de = readdir(dir)) != NULL) {
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char path[200];
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char vbuf[1024];
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int nlen = strlen(sra->sys_name);
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int dn;
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if (de->d_name[0] == '.')
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continue;
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sprintf(path, "/sys/block/%s/md/metadata_version",
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de->d_name);
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if (load_sys(path, vbuf) < 0)
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continue;
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if (strncmp(vbuf, "external:", 9) != 0 ||
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!is_subarray(vbuf+9) ||
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strncmp(vbuf+10, sra->sys_name, nlen) != 0 ||
|
|
vbuf[10+nlen] != '/')
|
|
continue;
|
|
dn = devname2devnum(de->d_name);
|
|
printf(" %s", map_dev(dev2major(dn),
|
|
dev2minor(dn), 1));
|
|
}
|
|
if (dir)
|
|
closedir(dir);
|
|
printf("\n\n");
|
|
}
|
|
|
|
if (array.raid_disks)
|
|
printf(" Number Major Minor RaidDevice State\n");
|
|
else
|
|
printf(" Number Major Minor RaidDevice\n");
|
|
}
|
|
|
|
for (d= 0; d < max_disks; d++) {
|
|
char *dv;
|
|
mdu_disk_info_t disk = disks[d];
|
|
|
|
if (d >= array.raid_disks &&
|
|
disk.major == 0 &&
|
|
disk.minor == 0)
|
|
continue;
|
|
if (!brief) {
|
|
if (d == array.raid_disks) printf("\n");
|
|
if (disk.raid_disk < 0)
|
|
printf(" %5d %5d %5d - ",
|
|
disk.number, disk.major, disk.minor);
|
|
else
|
|
printf(" %5d %5d %5d %5d ",
|
|
disk.number, disk.major, disk.minor, disk.raid_disk);
|
|
}
|
|
if (!brief && array.raid_disks) {
|
|
|
|
if (disk.state & (1<<MD_DISK_FAULTY)) {
|
|
printf(" faulty");
|
|
if (disk.raid_disk < array.raid_disks &&
|
|
disk.raid_disk >= 0)
|
|
failed++;
|
|
}
|
|
if (disk.state & (1<<MD_DISK_ACTIVE)) printf(" active");
|
|
if (disk.state & (1<<MD_DISK_SYNC)) printf(" sync");
|
|
if (disk.state & (1<<MD_DISK_REMOVED)) printf(" removed");
|
|
if (disk.state & (1<<MD_DISK_WRITEMOSTLY)) printf(" writemostly");
|
|
if ((disk.state &
|
|
((1<<MD_DISK_ACTIVE)|(1<<MD_DISK_SYNC)|(1<<MD_DISK_REMOVED)))
|
|
== 0) {
|
|
printf(" spare");
|
|
if (is_26) {
|
|
if (disk.raid_disk < array.raid_disks && disk.raid_disk >= 0)
|
|
printf(" rebuilding");
|
|
} else if (is_rebuilding && failed) {
|
|
/* Taking a bit of a risk here, we remove the
|
|
* device from the array, and then put it back.
|
|
* If this fails, we are rebuilding
|
|
*/
|
|
int err = ioctl(fd, HOT_REMOVE_DISK, makedev(disk.major, disk.minor));
|
|
if (err == 0) ioctl(fd, HOT_ADD_DISK, makedev(disk.major, disk.minor));
|
|
if (err && errno == EBUSY)
|
|
printf(" rebuilding");
|
|
}
|
|
}
|
|
}
|
|
if (disk.state == 0) spares++;
|
|
if (test && d < array.raid_disks
|
|
&& !(disk.state & (1<<MD_DISK_SYNC)))
|
|
rv |= 1;
|
|
if ((dv=map_dev(disk.major, disk.minor, 0))) {
|
|
if (brief) {
|
|
if (devices) {
|
|
devices = realloc(devices,
|
|
strlen(devices)+1+strlen(dv)+1);
|
|
strcat(strcat(devices,","),dv);
|
|
} else
|
|
devices = strdup(dv);
|
|
} else
|
|
printf(" %s", dv);
|
|
}
|
|
if (!brief) printf("\n");
|
|
}
|
|
if (spares && brief && array.raid_disks) printf(" spares=%d", spares);
|
|
if (brief && st && st->sb)
|
|
st->ss->brief_detail_super(st);
|
|
st->ss->free_super(st);
|
|
|
|
if (brief > 1 && devices) printf("\n devices=%s", devices);
|
|
if (brief) printf("\n");
|
|
if (test &&
|
|
!enough(array.level, array.raid_disks, array.layout,
|
|
1, avail, avail_disks))
|
|
rv = 2;
|
|
|
|
free(disks);
|
|
out:
|
|
close(fd);
|
|
return rv;
|
|
}
|
|
|
|
int Detail_Platform(struct superswitch *ss, int scan, int verbose)
|
|
{
|
|
/* display platform capabilities for the given metadata format
|
|
* 'scan' in this context means iterate over all metadata types
|
|
*/
|
|
int i;
|
|
int err = 1;
|
|
|
|
if (ss && ss->detail_platform)
|
|
err = ss->detail_platform(verbose, 0);
|
|
else if (ss) {
|
|
if (verbose)
|
|
fprintf(stderr, Name ": %s metadata is platform independent\n",
|
|
ss->name ? : "[no name]");
|
|
} else if (!scan) {
|
|
if (verbose)
|
|
fprintf(stderr, Name ": specify a metadata type or --scan\n");
|
|
}
|
|
|
|
if (!scan)
|
|
return err;
|
|
|
|
for (i = 0; superlist[i]; i++) {
|
|
struct superswitch *meta = superlist[i];
|
|
|
|
if (meta == ss)
|
|
continue;
|
|
if (verbose)
|
|
fprintf(stderr, Name ": checking metadata %s\n",
|
|
meta->name ? : "[no name]");
|
|
if (!meta->detail_platform) {
|
|
if (verbose)
|
|
fprintf(stderr, Name ": %s metadata is platform independent\n",
|
|
meta->name ? : "[no name]");
|
|
} else
|
|
err |= meta->detail_platform(verbose, 0);
|
|
}
|
|
|
|
return err;
|
|
}
|