From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from plane.gmane.org ([80.91.229.3]:38864 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753320Ab3LSSH3 (ORCPT ); Thu, 19 Dec 2013 13:07:29 -0500 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Vti0N-0001nb-TH for linux-btrfs@vger.kernel.org; Thu, 19 Dec 2013 19:07:27 +0100 Received: from ip68-231-22-224.ph.ph.cox.net ([68.231.22.224]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 19 Dec 2013 19:07:27 +0100 Received: from 1i5t5.duncan by ip68-231-22-224.ph.ph.cox.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 19 Dec 2013 19:07:27 +0100 To: linux-btrfs@vger.kernel.org From: Duncan <1i5t5.duncan@cox.net> Subject: Re: Unmountable Array After Drive Failure During Device Deletion Date: Thu, 19 Dec 2013 18:07:04 +0000 (UTC) Message-ID: References: <52B2BBE1.8090306@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Chris Kastorff posted on Thu, 19 Dec 2013 01:26:57 -0800 as excerpted: > I'm using btrfs in data and metadata RAID10 on drives (not on md or any > other fanciness.) > > I was removing a drive (btrfs dev del) and during that operation, a > different drive in the array failed. Having not had this happen before, > I shut down the machine immediately due to the extremely loud piezo > buzzer on the drive controller card. I attempted to do so cleanly, but > the buzzer cut through my patience and after 4 minutes I cut the power. > > Afterwards, I located and removed the failed drive from the system, and > then got back to linux. The array no longer mounts ("failed to read the > system array on sdc"), with nearly identical messages when attempted > with -o recovery and -o recovery,ro. This may be a stupid question, but you're missing a drive so the filesystem will be degraded, but you didn't mention that in your mount options, so... Did you try mounting with -o degraded (possibly with recovery, etc, also, but just try -o degraded plus any normal options first)? -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman