From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tregaron Bayly Subject: Re: Periodically scanning RAID arrays for inconsistencies Date: Fri, 01 Mar 2013 15:10:59 -0700 Message-ID: <1362175859.18278.76.camel@148> References: <81526C3C-7F95-4A17-B91B-8FD45BED55DE@redhat.com> Reply-To: tbayly@bluehost.com Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <81526C3C-7F95-4A17-B91B-8FD45BED55DE@redhat.com> Sender: linux-raid-owner@vger.kernel.org To: Brassow Jonathan Cc: "linux-raid@vger.kernel.org Raid" List-Id: linux-raid.ids On Fri, 2013-03-01 at 15:50 -0600, Brassow Jonathan wrote: > Is there a way to periodically scan a RAID array to report any discrepancies? Yes, it's possible - Redhat distributes a script called raid-check that is a good example of this very thing. Documentation/md.txt talks about 'check' and 'repair' as valid words for sync_action in sysfs. The number of errors found will be reported to mismatch_cnt. These can be found at /sys/block/md#/md for your array. hth, Tregaron