commit 5ef56c8fecedf403a346d02140e52a072d693d6b
author NeilBrown <neilb@suse.de> Thu Aug 25 14:42:51 2011 +1000
committer NeilBrown <neilb@suse.de> Thu Aug 25 14:42:51 2011 +1000
tree 1f121fe5e4db61364c352e7ffe2293a1cc20e9a9
parent 14c62e78dc1379185515be41903c4a667efc6d54

md: report failure if a 'set faulty' request doesn't.

Sometimes a device will refuse to be set faulty.  e.g. RAID1 will
never let the last working device become faulty.

So check if "md_error()" did manage to set the faulty flag and fail
with EBUSY if it didn't.

Resolves-Debian-Bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=601198
Reported-by: Mike Hommey <mh+reportbug@glandium.org>
Signed-off-by: NeilBrown <neilb@suse.de>