md: disconnect device from personality before trying to remove it.
When the HOT_REMOVE_DISK ioctl is used to remove a device, we
call remove_and_add_spares() which will remove it from the personality
if possible. This improves the chances that the removal will succeed.
When writing "remove" to dev-XX/state, we don't. So that can fail more easily.
So add the remove_and_add_spares() into "remove" handling.
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index d0c1e79..0793754 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2595,6 +2595,8 @@
else
err = -EBUSY;
} else if (cmd_match(buf, "remove")) {
+ clear_bit(Blocked, &rdev->flags);
+ remove_and_add_spares(rdev->mddev, rdev);
if (rdev->raid_disk >= 0)
err = -EBUSY;
else {