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Wait: also wait if an action is about to start. 

If a sync/recover action is about to start but hasn't actually begun
yet, /proc/mdstat won't show it, but md/sync_action will (it checks
MD_RECOVERY_NEEDED).
So when /proc/mdstat seems to say nothing is happening, double check
with md/sync_action.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2013-05-01 10:23:40 +10:00
parent 79b2ed4f24
commit 276be5147e
1 changed files with 13 additions and 0 deletions
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13
Monitor.c
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@ -972,6 +972,19 @@ int Wait(char *dev)
if (strcmp(e->devnm, devnm) == 0)
break;
if (e->percent == RESYNC_NONE) {
/* We could be in the brief pause before something
* starts. /proc/mdstat doesn't show that, but
* sync_action does.
*/
struct mdinfo mdi;
char buf[21];
sysfs_init(&mdi, -1, devnm);
if (sysfs_get_str(&mdi, NULL, "sync_action",
buf, 20) > 0 &&
strcmp(buf,"idle\n") != 0)
e->percent = RESYNC_UNKNOWN;
}
if (!e || e->percent == RESYNC_NONE) {
if (e && e->metadata_version &&
strncmp(e->metadata_version, "external:", 9) == 0) {