From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brad Campbell Subject: Re: no good deed goes unpunished... Date: Sat, 28 Mar 2015 08:57:42 +0800 Message-ID: <5515FC86.7030402@fnarfbargle.com> References: <20150327103301.16746hhb6t1sroel@webmail.uniserve.com> <20150327173709.19022q59t5hxh4tx@webmail.uniserve.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20150327173709.19022q59t5hxh4tx@webmail.uniserve.com> Sender: linux-raid-owner@vger.kernel.org To: Dave Stevens , Roger Heflin Cc: linux-raid List-Id: linux-raid.ids md12 has claimed sda2 and md10 has sdb&c. Try this mdadm --stop /dev/md12 mdadm --stop /dev/md10 mdadm --assemble --force /dev/md13 /dev/sd[abc]2 On 28/03/15 08:37, Dave Stevens wrote: > Quoting Roger Heflin : > >> I don't know what to make of it. >> >> Everyone will ask you for this info: >> mdadm --examine /dev/sdc2 and the same output against >> /dev/sdb2 > > ok, like this: > > # cat /proc/mdstat > > Personalities : > > md12 : inactive sda2[0](S) > 732467520 blocks > > md10 : inactive sdc2[2](S) sdb2[1](S) > 1464935040 blocks > > unused devices: > > > ------------------------------ reboot ---------------------- > > # mdadm -A /dev/md13 /dev/sdb2 /dev/sdc2 > > mdadm : /dev/md13 assembles from 1 drive - not enough to start the array > > # cat /proc/mdstat > > Personalities : > > md13 : inactive sdc2[2](S) sdb2[1](S) > > 1464935040 blocks > > unused devices : > > # mkdir aa > > # mount /dev/md13 aa > > mount: /dev/md13: can't read superblock > > > Dave > > > > >> >> On Fri, Mar 27, 2015 at 12:33 PM, Dave Stevens wrote: >>> From: Roger Heflin >>> To: Dave Stevens >>> Cc: Linux RAID >>> Subject: Re: no good deed goes unpunished... >>> Date: Thu, 26 Mar 2015 19:04:45 -0500 >>> Sender: linux-raid-owner@vger.kernel.org >>> >>> you should probably do cat /proc/mdstat >>> >>> It is likely that the livecd may have already tried to assemble it, >>> and that the busy is because it is already in use. >>> >>> If it is already assembled and you want to redo it first you will need >>> to stop the assembled array to be able to redo it. >>> >>> so this is what I did while running the live distro: >>> >>> # cat /proc/mdstat >>> >>> Personalities : >>> >>> md12 : inactive sda2[0](S) >>> 732467520 blocks >>> >>> md10 : inactive sdc2[2](S) sdb2[1](S) >>> 1464935040 blocks >>> >>> unused devices: >>> >>> >>> It seemed to me that matters were needlessly complicated by possible >>> residual issues from my earlier unsuccessful attempts so I rebooted. >>> >>> >>> ------------------------------ reboot ---------------------- >>> >>> # mdadm -A /dev/md13 /dev/sdb2 /dev/sdc2 >>> >>> mdadm : /dev/md13 assembles from 1 drive - not enough to start the array >>> >>> # cat /proc/mdstat >>> >>> Personalities : >>> >>> md13 : inactive sdc2[2](S) sdb2[1](S) >>> >>> 1464935040 blocks >>> >>> unused devices : >>> >>> # mkdir aa >>> >>> # mount /dev/md13 aa >>> >>> mount: /dev/md13: can't read superblock >>> >>> So I still don't see what to do. Advice welcome. >>> >>> Dave >>> >>> >>> >>> -- >>> "As long as politics is the shadow cast on society by big business, >>> the attenuation of the shadow will not change the substance." >>> >>> -- John Dewey >>> >>> >>> >>> >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-raid" in >>> the body of a message to majordomo@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-raid" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > > > -- Dolphins are so intelligent that within a few weeks they can train Americans to stand at the edge of the pool and throw them fish.