md/raid5: Allow reshape while a bitmap is present.
We always should have allowed this. A raid5 reshape doesn't change
the size of the bitmap, so not need to restrict it.
Also add a test to make sure we don't try to start a reshape on a
failed array.
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index eab6168..8fba57e 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5559,9 +5559,6 @@
mddev->new_layout == mddev->layout &&
mddev->new_chunk_sectors == mddev->chunk_sectors)
return 0; /* nothing to do */
- if (mddev->bitmap)
- /* Cannot grow a bitmap yet */
- return -EBUSY;
if (has_failed(conf))
return -EINVAL;
if (mddev->delta_disks < 0) {
@@ -5596,6 +5593,9 @@
if (!check_stripe_cache(mddev))
return -ENOSPC;
+ if (has_failed(conf))
+ return -EINVAL;
+
rdev_for_each(rdev, mddev) {
if (!test_bit(In_sync, &rdev->flags)
&& !test_bit(Faulty, &rdev->flags))