From mboxrd@z Thu Jan 1 00:00:00 1970 From: Asdo Subject: Re: It is safe to stop Raid being reshaped Date: Thu, 29 Dec 2011 03:02:47 +0100 Message-ID: <4EFBCA47.9010401@shiftmail.org> References: <4EFB67CC.7010500@shiftmail.org> Mime-Version: 1.0 Content-Type: text/plain; format=flowed; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-reply-to: Sender: linux-raid-owner@vger.kernel.org To: Jeremy Thompson Cc: Asdo , linux-raid List-Id: linux-raid.ids On 12/28/11 20:06, Jeremy Thompson wrote: > The RAID array consists of drives that are on cheap SATA controllers > no RAID function on them. That is why I chose to use mdadm instead of > a true RAID card. Me too, I meant 3ware used as classic sata controller > So the errors would happen regardless if heat was an issue? I think that with temperature you would get a different error: disk going completely offline due to thermal shutdown. Anyway Gordon showed you how to check for temperatures; try that. Another way is via "smartctl -a /dev/sdX" SCSI errors are usually due to cabling, not perfect firmware, not perfect controller, not perfect controller drivers. If you show us the exact error we can be a bit more precise. Note: 5 retries (for each scsi command) by the SCSI layer also applies to SATA disks, which is your case > I'll wait until the reshape is done then, shutdown the machine and > re-arrange the drives before I add another drive to the array. Yes this would be my suggestion, but I don't know everything. Have a look at the temperatures though, and compare to max temp by your HDD specs. I suggest you don't stop the array if they are lower.