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

Grow: be more careful if array is stopped during critical section. 

In that case, updating 'completed' to 'max_progress' is wrong.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2015-05-15 09:42:39 +10:00
parent a5a6a7d9fa
commit e0184a0cd0
1 changed files with 10 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
Grow.c
View File

@ -3850,10 +3850,17 @@ int progress_reshape(struct mdinfo *info, struct reshape *reshape,
goto check_progress;
}
/* Some kernels reset 'sync_completed' to zero,
* we need to have real point we are in md
* we need to have real point we are in md.
* But only if array is actually still reshaping,
* not stopped.
*/
if (completed == 0)
completed = max_progress;
if (completed == 0) {
char action[20];
if (sysfs_get_str(info, NULL, "sync_action",
action, 20) > 0 &&
strncmp(action, "reshape", 7) == 0)
completed = max_progress;
}
/* some kernels can give an incorrectly high 'completed' number */
completed /= (info->new_chunk/512);