From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Mason Subject: Re: Crash in __btrfs_reserve_extent Date: Thu, 6 Aug 2009 14:57:45 -0400 Message-ID: <20090806185745.GB17129@think> References: <4A7A7F9F.1080809@redpill-linpro.com> <4A7A9A04.5010006@redpill-linpro.com> <20090806135436.GD3655@dhcp231-156.rdu.redhat.com> <4A7AE579.1050403@redpill-linpro.com> <20090806142750.GE3655@dhcp231-156.rdu.redhat.com> <4A7B15DD.2010101@redpill-linpro.com> <20090806180432.GG3655@dhcp231-156.rdu.redhat.com> <4A7B1D6D.6090402@redpill-linpro.com> <20090806183712.GH3655@dhcp231-156.rdu.redhat.com> <4A7B25C3.4020206@redpill-linpro.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Josef Bacik , linux-btrfs@vger.kernel.org, Hugo Mills To: Tore Anderson Return-path: In-Reply-To: <4A7B25C3.4020206@redpill-linpro.com> List-ID: On Thu, Aug 06, 2009 at 08:49:39PM +0200, Tore Anderson wrote: > * Josef Bacik > > > Ok good news is, btrfs-vol -b will fix your problem. Somehow most of > > your disk has been allocated to use metadata. So did you have a > > whole bunch of stuff on this disk and then delete it all? Because > > that would put you in that situation. If you have not then there is > > likely a bug in the metadata ratio stuff that needs to be fixed. > > As far as I know there hasn't been a lot of stuff on the file system, > I'm afraid. The file system was created by the Fedora 11 installer, > and it has just been used as the system drive (I've got /home on NFS). > > btrfs-vol -b / (from btrfs-progs-0.19) made my system crash and burn. > I've was able to get output from dmesg before my SSH sessions started > hanging - maybe you can make anything out of it? Anyway, right now I > have no more remote access to the box so any further debugging will > have to wait until tomorrow morning. > > btrfs relocating chunk 129952120832 > btrfs relocating block group 129952120832 flags 1 Ugh, it hit the data group first, which it can't relocate because there is nowhere to put the blocks. -chris