From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qc0-f169.google.com ([209.85.216.169]:50113 "EHLO mail-qc0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753268Ab3HVTXo convert rfc822-to-8bit (ORCPT ); Thu, 22 Aug 2013 15:23:44 -0400 Received: by mail-qc0-f169.google.com with SMTP id m15so1243704qcq.14 for ; Thu, 22 Aug 2013 12:23:43 -0700 (PDT) Content-Type: text/plain; charset=US-ASCII Mime-Version: 1.0 (Mac OS X Mail 6.5 \(1508\)) Subject: Re: Question: How can I recover this partition? (unable to find logical $hugenum len 4096) From: Nicholas Lee In-Reply-To: Date: Thu, 22 Aug 2013 15:23:33 -0400 Cc: linux-btrfs Message-Id: <5EB2ECAC-9A8C-4403-8630-944B646DE3B8@nickle.es> References: <79471CD1-CDDD-4EDD-B255-40568B8446E2@nickle.es> To: Mitch Harder Sender: linux-btrfs-owner@vger.kernel.org List-ID: After updating the kernel and using btrfs-progs-git from the AUR, I'm now getting this output. Does this yield any new insight? [ 473.305408] btrfs: failed to read tree root on dm-2 [ 473.305555] BTRFS critical (device dm-2): unable to find logical 1781900460032 len 4096 [ 473.305591] BTRFS emergency (device dm-2): No mapping for 1781900460032-1781900464128 On 22.08.2013, at 10:09, Mitch Harder wrote: > On Thu, Aug 22, 2013 at 1:47 AM, Nicholas Lee wrote: > >> [ 45.914275] ------------[ cut here ]------------ >> [ 45.914406] kernel BUG at fs/btrfs/volumes.c:4417! >> [ 45.914489] invalid opcode: 0000 [#1] PREEMPT SMP > > I can't say if this will fix your problem or not, but the 3.10.x > kernel has a patch to pass this error back instead of halting with a > BUG() at this point.