From mboxrd@z Thu Jan 1 00:00:00 1970 From: Malwina Bartoszynska Subject: "btrfs: =?utf-8?b?b3Blbl9jdHJlZQ==?= failed" error Date: Wed, 21 Dec 2011 13:54:06 +0000 (UTC) Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: linux-btrfs@vger.kernel.org Return-path: List-ID: Hello, after unmounting btrfs partition, I can't mount it again. root@xxx:~# btrfs device scan Scanning for Btrfs filesystems root@xxx:~# mount /dev/sdb /data/osd.0/ mount: wrong fs type, bad option, bad superblock on /dev/sdb, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so root@xxxx:~# dmesg|tail [57192.607912] device fsid ed25c604-3e11-4459-85b5-e4090c4d22d0 devid 2 transid14429 /dev/sda [57204.796573] end_request: I/O error, dev fd0, sector 0 [57231.660913] device fsid ed25c604-3e11-4459-85b5-e4090c4d22d0 devid 1 transid 14429 /dev/sdb [57231.680387] parent transid verify failed on 424308420608 wanted 6970 found 8959 [57231.680546] parent transid verify failed on 424308420608 wanted 6970 found 8959 [57231.680705] parent transid verify failed on 424308420608 wanted 6970 found 8959 [57231.680861] parent transid verify failed on 424308420608 wanted 6970 found 8959 [57231.680869] parent transid verify failed on 424308420608 wanted 6970 found 8959 [57231.680875] Failed to read block groups: -5 [57231.704165] btrfs: open_ctree failed root@xxx:~# root@xxx:~# btrfs filesystem show Label: none uuid: ed25c604-3e11-4459-85b5-e4090c4d22d0 Total devices 4 FS bytes used 111.07GB devid 2 size 931.51GB used 56.02GB path /dev/sda devid 1 size 931.51GB used 56.02GB path /dev/sdb devid 4 size 232.89GB used 34.00GB path /dev/sdd devid 3 size 184.26GB used 34.00GB path /dev/sdc4 I was trying to fix it using btrfsc (from btrf-tools 0.19+20100601-3ubuntu3): root@xxx:~# btrfsck /dev/sdb parent transid verify failed on 424308420608 wanted 6970 found 8959 parent transid verify failed on 424308420608 wanted 6970 found 8959 parent transid verify failed on 424308420608 wanted 6970 found 8959 Segmentation fault But it failed. Also btrfsc from current git repository failed. root@xxx:/usr/src/test/btrfs-progs# ./btrfsck /dev/sdb parent transid verify failed on 424308420608 wanted 6970 found 8959 parent transid verify failed on 424308420608 wanted 6970 found 8959 parent transid verify failed on 424308420608 wanted 6970 found 8959 parent transid verify failed on 424308420608 wanted 6970 found 8959 Ignoring transid failure parent transid verify failed on 426205605888 wanted 8371 found 10836 parent transid verify failed on 426205605888 wanted 8371 found 10836 parent transid verify failed on 426205605888 wanted 8371 found 10836 parent transid verify failed on 426205605888 wanted 8371 found 10836 Ignoring transid failure parent transid verify failed on 424601571328 wanted 8959 found 10264 parent transid verify failed on 424601571328 wanted 8959 found 10264 parent transid verify failed on 424601571328 wanted 8959 found 10264 parent transid verify failed on 424601571328 wanted 8959 found 10264 Ignoring transid failure parent transid verify failed on 422394281984 wanted 6042 found 14369 parent transid verify failed on 422394281984 wanted 6042 found 14369 parent transid verify failed on 422394281984 wanted 6042 found 14369 parent transid verify failed on 422394281984 wanted 6042 found 14369 Ignoring transid failure parent transid verify failed on 422394277888 wanted 6042 found 14369 parent transid verify failed on 422394277888 wanted 6042 found 14369 parent transid verify failed on 422394277888 wanted 6042 found 14369 parent transid verify failed on 422394277888 wanted 6042 found 14369 Ignoring transid failure parent transid verify failed on 424867557376 wanted 8744 found 11654 parent transid verify failed on 424867557376 wanted 8744 found 11654 parent transid verify failed on 424867557376 wanted 8744 found 11654 parent transid verify failed on 424867557376 wanted 8744 found 11654 Ignoring transid failure parent transid verify failed on 426748997632 wanted 8747 found 9681 parent transid verify failed on 426748997632 wanted 8747 found 9681 parent transid verify failed on 426748997632 wanted 8747 found 9681 parent transid verify failed on 426748997632 wanted 8747 found 9681 Ignoring transid failure parent transid verify failed on 426748993536 wanted 8747 found 9681 parent transid verify failed on 426748993536 wanted 8747 found 9681 parent transid verify failed on 426748993536 wanted 8747 found 9681 parent transid verify failed on 426748993536 wanted 8747 found 9681 Ignoring transid failure parent transid verify failed on 426749001728 wanted 8747 found 9681 parent transid verify failed on 426749001728 wanted 8747 found 9681 parent transid verify failed on 426749001728 wanted 8747 found 9681 parent transid verify failed on 426749001728 wanted 8747 found 9681 Ignoring transid failure parent transid verify failed on 426749005824 wanted 8747 found 9681 parent transid verify failed on 426749005824 wanted 8747 found 9681 parent transid verify failed on 426749005824 wanted 8747 found 9681 parent transid verify failed on 426749005824 wanted 8747 found 9681 Ignoring transid failure parent transid verify failed on 423647268864 wanted 6496 found 11645 parent transid verify failed on 423647268864 wanted 6496 found 11645 parent transid verify failed on 423647268864 wanted 6496 found 11645 parent transid verify failed on 423647268864 wanted 6496 found 11645 Ignoring transid failure parent transid verify failed on 424308420608 wanted 6970 found 8959 Ignoring transid failure leaf 417616629760 items 1 free space 3838 generation 5974 owner 7 fs uuid ed25c604-3e11-4459-85b5-e4090c4d22d0 chunk uuid b2b76fcf-3e03-4f9c-8cd1-4cad10c8bb2a item 0 key (EXTENT_CSUM EXTENT_CSUM 375473815552) itemoff 3863 itemsize 132 extent csum item failed to find block number 292758224896 Aborted I am using Btrfs v0.19 on Ubuntu 11.10(kernel 3.0.0-14-generic x86_64). How can I fix it? Best regards, -- Malwina Bartoszynska