Martchus
/
mdadm
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Verify reshape restart position 

Check if reshape restart position is the same as set in md.
If position doesn't match this means that we cannot restart reshape.

Signed-off-by: Adam Kwolek <adam.kwolek@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Adam Kwolek 2011-10-03 10:04:32 +11:00 committed by NeilBrown
parent 577e8448e9
commit f1fe496bce
1 changed files with 31 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
Grow.c
View File

@ -3645,6 +3645,8 @@ int Grow_continue_command(char *devname, int fd,
char buf[40];
int cfd = -1;
int fd2 = -1;
char *ep;
unsigned long long position;
dprintf("Grow continue from command line called for %s\n",
devname);
@ -3746,6 +3748,35 @@ int Grow_continue_command(char *devname, int fd,
}
}
/* verify that array under reshape is started from
* correct position
*/
ret_val = sysfs_get_str(content, NULL, "sync_max", buf, 40);
if (ret_val <= 0) {
fprintf(stderr, Name
": cannot open verify reshape progress for %s (%i)\n",
content->sys_name, ret_val);
ret_val = 1;
goto Grow_continue_command_exit;
}
dprintf(Name ": Read sync_max sysfs entry is: %s\n", buf);
position = strtoull(buf, &ep, 0);
if (ep == buf || (*ep != 0 && *ep != '\n' && *ep != ' ')) {
fprintf(stderr, Name ": Fatal error: array reshape was"
" not properly frozen\n");
ret_val = 1;
goto Grow_continue_command_exit;
}
position *= get_data_disks(map_name(pers, mdstat->level),
content->new_layout,
content->array.raid_disks);
if (position != content->reshape_progress) {
fprintf(stderr, Name ": Fatal error: array reshape was"
" not properly frozen.\n");
ret_val = 1;
goto Grow_continue_command_exit;
}
/* continue reshape
*/
ret_val = Grow_continue(fd, st, content, backup_file, 0);