Commit 8430e7e0 authored Jun 02, 2016 by NeilBrown Committed by Shaohua Li Jun 13, 2016

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>

parent 7ac50447

drivers/md/md.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2595,6 +2595,8 @@ state_store(struct md_rdev rdev, const char buf, size_t len)
		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 {