From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Scobie Subject: Re: Assembly failure Date: Sat, 14 Jul 2012 08:34:40 +1200 Message-ID: <50008660.7020905@clear.net.nz> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: Linux RAID Mailing List List-Id: linux-raid.ids Brian Candler wrote: ------------------------------------ One final point. I would like to be able to monitor for suspect or failed drives. Is my best bet to look at /proc/mdstat output and identify drives which have been kicked out of the array? Or to monitor SMART variables (in that case though I need to decide which ones are the most important to monitor, and what thresholds to set)? ------------------------------------------- For years I have used smartd without issues and it will log and email anomalies as they occur. It is also advisable to regularly "scrub" all md devices, to flush out faulty sectors: echo check > /sys/block/mdX/md/sync_action See Documentation/md.txt for details. Regards, Richard