Merge tag 'md-3.3-fixes' of git://neil.brown.name/md
Two bugfixes for md.
One is a recently introduced regression that affects an unusual
configuration with a guaranteed BUG_ON. Has been tagged for -stable.
The other is minor missing functionality.
* tag 'md-3.3-fixes' of git://neil.brown.name/md:
md/raid1: perform bad-block tests for WriteMostly devices too.
md: notify the 'degraded' sysfs attribute on failure.
diff --git a/drivers/md/md.c b/drivers/md/md.c
index ca8527f..da52acb 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -7382,6 +7382,7 @@
{
struct md_rdev *rdev;
int spares = 0;
+ int removed = 0;
mddev->curr_resync_completed = 0;
@@ -7395,8 +7396,13 @@
mddev, rdev) == 0) {
sysfs_unlink_rdev(mddev, rdev);
rdev->raid_disk = -1;
+ removed++;
}
}
+ if (removed)
+ sysfs_notify(&mddev->kobj, NULL,
+ "degraded");
+
list_for_each_entry(rdev, &mddev->disks, same_set) {
if (rdev->raid_disk >= 0 &&
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index cc24f0c..a368db2 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -531,8 +531,17 @@
if (test_bit(WriteMostly, &rdev->flags)) {
/* Don't balance among write-mostly, just
* use the first as a last resort */
- if (best_disk < 0)
+ if (best_disk < 0) {
+ if (is_badblock(rdev, this_sector, sectors,
+ &first_bad, &bad_sectors)) {
+ if (first_bad < this_sector)
+ /* Cannot use this */
+ continue;
+ best_good_sectors = first_bad - this_sector;
+ } else
+ best_good_sectors = sectors;
best_disk = disk;
+ }
continue;
}
/* This is a reasonable device to use. It might