From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Kozlowski Subject: Re: volume broken? btrfsck fails Date: Thu, 1 Jul 2010 12:51:04 +0000 (UTC) Message-ID: References: <569BCC7F-1920-4AC4-8069-369419029373@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: linux-btrfs@vger.kernel.org Return-path: List-ID: Yee-Ting Li gmail.com> writes: > > Hi, > > i think my btrfs volume is hosed.... it mounts okay, but iostat shows /dev/sdg on 100% load. dmesg shows lots > of 'parent transid verify failed on x wanted y found z'. then after a while i can't read from it (access to the > filesystem freezes). > > the machine had crashed (prob from some other process), and upon reboot i've been experience this problem since. > > can anyone provide any guidance in how to proceed? > > cheers, > > Yee. I am also having the same problem with a slightly different setup. In My case I cannot mount the filesystem. mount, btrfs-endio-met and kblockd/0 will all continually run until the system freezes up and requires a power cycle. I have both the kernel module and the tools checked out from git so if you have any ideas on fix's I can build them and test it out. here is some information about my setup [root@solution ~]# uname -a Linux solution.bcig 2.6.35-0.13.rc3.git2.fc14.x86_64 #1 SMP Mon Jun 28 19:27:35 UTC 2010 x86_64 x86_64 x86_64 GNU/Linux [root@solution ~]# [root@solution ~]# btrfs-show Label: store uuid: 4ba1cc6b-e12a-454a-a064-f4019312c063 Total devices 7 FS bytes used 1.15TB devid 1 size 931.51GB used 415.55GB path /dev/sdb devid 2 size 931.51GB used 518.50GB path /dev/sdc devid 3 size 931.51GB used 342.04GB path /dev/sdd devid 4 size 931.51GB used 523.54GB path /dev/sde devid 5 size 465.76GB used 402.54GB path /dev/sdf devid 6 size 465.76GB used 382.54GB path /dev/sdg devid 7 size 465.76GB used 367.54GB path /dev/sdh Btrfs v0.19-16-g075587c-dirty [root@solution ~]# [root@solution ~]# tail -n 12 /var/log/messages Jul 1 04:47:03 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: verify_parent_transid: 9244 callbacks suppressed Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 Jul 1 04:47:08 solution kernel: parent transid verify failed on 1682196926464 wanted 285263 found 283510 [root@solution ~]#