mdadm/mdassemble.c
NeilBrown 9759037678 Generate 'change' uevents when arrays change in non-obvious ways.
When a 'container' gets started, we need udev to notice, but the
kernel has no way of knowing that a KOBJ_CHANGE event is needed.  So
send one directly via the 'uevent' sysfs attribute.

Also, uevents don't get generated when md arrays are stopped (prior to
2.6.28) so send 'change' events then too.

Signed-off-by: NeilBrown <neilb@suse.de>
2008-11-04 20:50:39 +11:00

116 lines
2.9 KiB
C

/*
* mdassemble - assemble Linux "md" devices aka RAID arrays.
*
* Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
* Copyright (C) 2003 Luca Berra <bluca@vodka.it>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Neil Brown
* Email: <neilb@cse.unsw.edu.au>
* Paper: Neil Brown
* School of Computer Science and Engineering
* The University of New South Wales
* Sydney, 2052
* Australia
*/
#include "mdadm.h"
#include "md_p.h"
/* from readme.c */
mapping_t pers[] = {
{ "linear", -1},
{ "raid0", 0},
{ "0", 0},
{ "stripe", 0},
{ "raid1", 1},
{ "1", 1},
{ "mirror", 1},
{ "raid4", 4},
{ "4", 4},
{ "raid5", 5},
{ "5", 5},
{ "multipath", -4},
{ "mp", -4},
{ "raid6", 6},
{ "6", 6},
{ "raid10", 10},
{ "10", 10},
{ NULL, 0}
};
#ifndef MDASSEMBLE_AUTO
/* from mdopen.c */
int open_mddev(char *dev, int report_errors/*unused*/)
{
int mdfd = open(dev, O_RDWR);
if (mdfd < 0)
fprintf(stderr, Name ": error opening %s: %s\n",
dev, strerror(errno));
else if (md_get_version(mdfd) <= 0) {
fprintf(stderr, Name ": %s does not appear to be an md device\n",
dev);
close(mdfd);
mdfd = -1;
}
return mdfd;
}
int create_mddev(char *dev, char *name, int autof/*unused*/, int trustworthy,
char *chosen)
{
return open_mddev(dev, 0);
}
int sysfs_uevent(struct mdinfo *info, char *event)
{
return 0;
}
#endif
int map_update(struct map_ent **mpp, int devnum, char *metadata,
int *uuid, char *path)
{
return 0;
}
int rv;
int mdfd = -1;
int runstop = 0;
int readonly = 0;
int verbose = 0;
int force = 0;
int main(int argc, char *argv[]) {
mddev_ident_t array_list = conf_get_ident(NULL);
if (!array_list) {
fprintf(stderr, Name ": No arrays found in config file\n");
rv = 1;
} else
for (; array_list; array_list = array_list->next) {
mdu_array_info_t array;
mdfd = open_mddev(array_list->devname, 0);
if (mdfd >= 0 && ioctl(mdfd, GET_ARRAY_INFO, &array) == 0) {
rv |= Manage_ro(array_list->devname, mdfd, -1); /* make it readwrite */
continue;
}
if (mdfd >= 0)
close(mdfd);
rv |= Assemble(array_list->st, array_list->devname,
array_list, NULL, NULL,
readonly, runstop, NULL, NULL, verbose, force);
}
return rv;
}