md: Don't allow slot_store while resync/recovery is happening.



Activating a spare in an array while resync/recovery is already
happening can lead the that spare being marked in-sync when it isn't
really.
So don't allow the 'slot' to be set (this activating the device)
while resync/recovery is happening.

Signed-off-by: NeilBrown <neilb@suse.de>

parent 7281f812

drivers/md/md.c

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2463,6 +2463,9 @@ slot_store(mdk_rdev_t rdev, const char buf, size_t len)
	if (rdev->raid_disk != -1)		if (rdev->raid_disk != -1)
	return -EBUSY;		return -EBUSY;

			if (test_bit(MD_RECOVERY_RUNNING, &rdev->mddev->recovery))
			return -EBUSY;

	if (rdev->mddev->pers->hot_add_disk == NULL)		if (rdev->mddev->pers->hot_add_disk == NULL)
	return -EINVAL;		return -EINVAL;