md: make sure manual changes to recovery checkpoint are saved.
If you make an array bigger but suppress resync of the new region with
mdadm --grow /dev/mdX --size=max --assume-clean
then stop the array before anything is written to it, the effect of
the "--assume-clean" is lost and the array will resync the new space
when restarted.
So ensure that we update the metadata in the case.
Reported-by: Sebastian Riemer <sebastian.riemer@profitbricks.com>
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 200d086..8d93f86 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3782,6 +3782,8 @@
return -EINVAL;
mddev->recovery_cp = n;
+ if (mddev->pers)
+ set_bit(MD_CHANGE_CLEAN, &mddev->flags);
return len;
}
static struct md_sysfs_entry md_resync_start =