From mboxrd@z Thu Jan 1 00:00:00 1970 From: Priya Kamala Subject: FW: RAID-1 problem after device removal Date: Wed, 30 Jan 2013 11:00:05 +0000 Message-ID: <5108FD35.7040508@perpetual-data.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Resending on behalf of a colleague as his mails are not getting through to the list. -----Original Message----- From: Barry J Sturgeon [mailto:barry.sturgeon@perpetual-data.com] Sent: 30 January 2013 07:29 To: 'linux-raid@vger.kernel.org' Subject: RE: RAID-1 problem after device removal Hi, When I SCSI-remove a drive from a RAID-1 partition I see the RAID partition correctly marked failed (F). However, all write attempts after this are quietly failing, even though the file system (XFS) and LVM are not reporting any errors. In other words. cp * TEST_FOLDER; echo "scsi remove-single-device 1 0 1 0" > /proc/scsi/scsi; touch TEST_FILE The files from TEST_FOLDER and TEST_FILE appear on the file system, but when I reboot they have disappeared! Note that I do not see this issue with a RAID-5 AND does not occur on RAID-1 Superblock version 1.2. So I only see this with RAID-1 Superblock version 0.9. I have tried kernel 3.2.32 and 3.2.37 and the both show this behavior. The same test succeeds on 2.6. I am committed to 3.2.x so I cannot move further upstream. Am I doing something illegal? Does anybody recognize this? Any suggestions how I should proceed? Thanks, Barry