From mboxrd@z Thu Jan 1 00:00:00 1970 From: Neil Brown Subject: Re: Help - Urgent!!! Date: Fri, 13 Nov 2009 16:11:07 +1100 Message-ID: <19196.60011.858158.550391@notabene.brown> References: <200911122253.01626.lrhorer@satx.rr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: message from lrhorer@satx.rr.com on Thursday November 12 Sender: linux-raid-owner@vger.kernel.org To: "lrhorer@satx.rr.com" Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On Thursday November 12, lrhorer@satx.rr.com wrote: > Damn!!! > > I was doing some testing at the behest of Doug, when I made a > critical error which locked up the system and now the main array won't > assemble, at all. I issued the command > > `mdadm -G /dev/md0 -b internal --bitmap-chunk=65535` > > And the system complained it was an invalid chunk-size, so I > tried: > > `mdadm -G /dev/md0 -b internal --bitmap-chunk=65536` > > This time there was no error, but the command line just hung > solid. I tired everything I could to recover, but the system just went > downhill more and more. Finally I tried a shutdown, but even that would > not work. I had to hit the big red switch, and now when I rebooted the > system, mdadm will not assemble the array no matter what I try. I tried > > > `mdadm --assemble /dev/md0 -f` > > `mdadm --assemble /dev/md0 -u xxxxxxxx:xxxxxxxxx:xxxxxx:xxxxxx` > > etc. It just keeps saying, "No devices found for md0". When I > issue the --examine switch, the information all looks good for all the > drives, just no RAID. What do I do, now? 1/ show us what the result of --examine was. 2/ add -vvv to the --assemble and report the result of that. NeilBrown