Re: another messed-up btrfs

[Viacheslav Dobromyslov]

Hi.

Still waiting for this
http://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg08370.html

Sincerely,
Viacheslav Dobromyslov



On Fri, Apr 1, 2011 at 8:01 PM, Peter Stuge pe...@stuge.se wrote:
 Martin Fahr wrote:
 btrfsck: disk-io.c:741: open_ctree_fd: Assertion `!(!tree_root-node)' 
 failed.

 My fs is also broken this way, though for me it happened after
 resizing the fs and then partition. I still need to go back to the
 list thread and do some work on my image.


 The usual questions: Is there anything I could do to help analyze
 and fix the problem? Is there hope to restore the data any time
 soon, or should I better use the backup I have (and possibly move
 to an ext4 file system)?

 It seems the root node is a bit of a sore point with btrfs. :\


 //Peter
 --
 To unsubscribe from this list: send the line unsubscribe linux-btrfs in
 the body of a message to majord...@vger.kernel.org
 More majordomo info at  http://vger.kernel.org/majordomo-info.html

--
To unsubscribe from this list: send the line unsubscribe linux-btrfs in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: btrfs: open_ctree failed after power loss

[Viacheslav Dobromyslov]

Hi!

I've just updated kernel to 2.6.38. Now there are no troubles with
mounting after btrfsck and brtfs-select-super.
Thank you guys!

Sincerely,
Viacheslav Dobromyslov


On Sat, Feb 5, 2011 at 4:53 PM, Viacheslav Dobromyslov
slavik.do...@gmail.com wrote:

 Hello, friends!

 I have some troubles with removable disk after powering off without 
 unmounting.
 'btrfsck' and 'btrfs-select-super' didn't help.

 # uname -srvo
 Linux 2.6.37-gentoo #2 SMP PREEMPT Tue Jan 11 20:58:56 VLAT 2011 GNU/Linux

 Installed sys-fs/btrfs-progs-0.19-r2.

 # btrfs fi show
 failed to read /dev/sr0
 Label: none  uuid: acf790ef-13ba-4c08-b0d3-3ab9938b5b94
        Total devices 1 FS bytes used 9.97GB
        devid    1 size 14.65GB used 14.65GB path /dev/sda4

 Label: none  uuid: 53b9ab33-8049-46e0-a90f-b601446abc79
        Total devices 1 FS bytes used 20.35GB
        devid    1 size 150.00GB used 23.29GB path /dev/sdc2

 # mount -t btrfs /dev/sdc2 /mnt/
 mount: wrong fs type, bad option, bad superblock on /dev/sdc2,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

 # dmesg
 device fsid e046498033abb953-79bc6a4401b60fa9 devid 1 transid 433 /dev/sdc2
 btrfs: open_ctree failed

 # btrfsck /dev/sdc2
 found 21851738112 bytes used err is 0
 total csum bytes: 21297140
 total tree bytes: 43466752
 total fs tree bytes: 17068032
 btree space waste bytes: 7526756
 file data blocks allocated: 21808271360
  referenced 21808271360
 Btrfs Btrfs v0.19

 # btrfs-select-super -s 1 /dev/sdc2
 using SB copy 1, bytenr 67108864

 # btrfs-debug-tree /dev/sdc2
 root tree
 leaf 23651717120 items 12 free space 1987 generation 433 owner 1
 fs uuid 53b9ab33-8049-46e0-a90f-b601446abc79
 chunk uuid 461537d2-d586-4f0c-9469-09d8933bce0a
        item 0 key (EXTENT_TREE ROOT_ITEM 0) itemoff 3756 itemsize 239
                root data bytenr 23651721216 level 2 dirid 0 refs 1

 .

        item 30 key (12298 EXTENT_DATA 0) itemoff 1548 itemsize 53
                extent data disk byte 22261157888 nr 13418496
                extent data offset 0 nr 13418496 ram 13418496
                extent compression 0
 data reloc tree key (DATA_RELOC_TREE ROOT_ITEM 0)
 leaf 29380608 items 2 free space 3773 generation 5 owner 18446744073709551607
 fs uuid 53b9ab33-8049-46e0-a90f-b601446abc79
 chunk uuid 461537d2-d586-4f0c-9469-09d8933bce0a
        item 0 key (FIRST_CHUNK_TREE INODE_ITEM 0) itemoff 3835 itemsize 160
                inode generation 4 size 0 block group 0 mode 40555 links 1
        item 1 key (FIRST_CHUNK_TREE INODE_REF 256) itemoff 3823 itemsize 12
                inode ref index 0 namelen 2 name: ..
 total bytes 161067429888
 bytes used 21851738112
 uuid 53b9ab33-8049-46e0-a90f-b601446abc79
 Btrfs Btrfs v0.19


 I've already found similar trouble http://www.spinics.net/lists/linux-
 btrfs/msg07572.html . but that solution didn't help.
--
To unsubscribe from this list: send the line unsubscribe linux-btrfs in
the body of a message to majord...@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html