From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sam Bingner Subject: Re: Recovery possible after partial reshape failure? Date: Sun, 14 Jul 2013 08:09:12 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=Windows-1252 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Content-Language: en-US Content-ID: <0C7C70CE92BA9D4692802427AF4C5E4A@ds.sbdhi.com> Sender: linux-raid-owner@vger.kernel.org To: Veedar Hokstadt , "linux-raid@vger.kernel.org" List-Id: linux-raid.ids On 7/13/13 10:01 AM, "Veedar Hokstadt" wrote: >Hello, Please consider the following RAID5 recovery attempt after a >failed partial reshape. >Copy-on-write devices were created to protect original drives. >Any assistance on how to reassemble would be most welcome. > >...Operating environment is from a systemrescuecd... >% mdadm -V >mdadm - v3.1.4 - 31st August 2010 >% /usr/local/sbin/mdadm -V <<<<<< compiled latest by hand >mdadm - v3.2.6 - 25th October 2012 >% uname -a >Linux dallas 3.2.33-std311-amd64 #2 SMP Wed Oct 31 07:31:30 UTC 2012 >x86_64 Intel(R) Core(TM) i7-2600K CPU @ 3.40GHz GenuineIntel GNU/Linux > >...Drive /dev/mapper/cow_sdc1 appears damaged and goes offline >sporadically, so I'm trying to reassemble with out sdc1... >...In any case sdc1 is out of sync with the other drives and it's >reshape pos'n is at zero... >...Also /usb/foo is an empty file... sdc and sdf's event counts are both 2 events higher than the other devices=8A I suspect this is causing issues because sdf's event count a= nd update time is higher than the other good devices, but I'm not sure how= to correct it. I wanted to see if you can verify that the original sdf a= lso has this problem (updated later than all the other devices with an incremented event count) I'm sure somebody with more knowledge than I will be able to give you m= ore information. Sam -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html