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md: provide appropriate return value for spare_active functions.

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md_check_recovery expects ->spare_active to return 'true' if any
spares were activated, but none of them do, so the consequent change
in 'degraded' is not notified through sysfs.

So count the number of spares activated, subtract it from 'degraded'
just once, and return it.

Reported-by: Adrian Drzewiecki <adriand@vmware.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown
2010-08-18 11:56:59 +10:00
parent e6ffbcb6cd
commit 6b96562054
3 changed files with 21 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/md/raid10.c
+7 -5
View File
@@ -1116,6 +1116,8 @@ static int raid10_spare_active(mddev_t *mddev)
int i;
conf_t *conf = mddev->private;
mirror_info_t *tmp;
int count = 0;
unsigned long flags;
/*
* Find all non-in_sync disks within the RAID10 configuration
@@ -1126,16 +1128,16 @@ static int raid10_spare_active(mddev_t *mddev)
if (tmp->rdev
&& !test_bit(Faulty, &tmp->rdev->flags)
&& !test_and_set_bit(In_sync, &tmp->rdev->flags)) {
unsigned long flags;
spin_lock_irqsave(&conf->device_lock, flags);
mddev->degraded--;
spin_unlock_irqrestore(&conf->device_lock, flags);
count++;
sysfs_notify_dirent(tmp->rdev->sysfs_state);
}
}
spin_lock_irqsave(&conf->device_lock, flags);
mddev->degraded -= count;
spin_unlock_irqrestore(&conf->device_lock, flags);
print_conf(conf);
return 0;
return count;
}