-------- Original Message --------
Subject: Re: read block failed check_tree_block / Couldn't read chunk tree
From: Rene Thomas <re.thomas@xxxxxx>
To: Anand Jain <Anand.Jain@xxxxxxxxxx>
Date: 2014年10月31日 00:47
With commit patched out.
All devices in Place
uname -a
Linux engelserver 3.18.0-031800rc1-generic #201410192135 SMP Mon Oct
20 01:37:04 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux
root@engelserver:/# btrfs --version
Btrfs v3.17-dirty
root@engelserver:/# btrfs fi show
Label: 'mythstorage' uuid: 9b454272-6800-4b3c-b196-9e180407a6cb
Total devices 1 FS bytes used 4.27MiB
devid 1 size 931.51GiB used 2.04GiB path /dev/sdh1
Label: none uuid: 8ef575d9-2465-479c-bf9c-067e2e417770
Total devices 3 FS bytes used 3.02TiB
devid 1 size 2.73TiB used 1.77TiB path /dev/sdf1
devid 2 size 2.73TiB used 1.77TiB path /dev/sda1
devid 3 size 2.73TiB used 1.77TiB path /dev/sdg1
Btrfs v3.17-dirty
root@engelserver:/# dmesg | grep -i btrfs
[ 12.144778] Btrfs loaded
[ 12.155656] BTRFS: device label mythstorage devid 1 transid 633 /dev/sdh1
[ 12.167277] BTRFS info (device sdh1): enabling auto defrag
[ 12.178478] BTRFS info (device sdh1): disk space caching is enabled
[ 13.008943] BTRFS: device fsid 8ef575d9-2465-479c-bf9c-067e2e417770
devid 1 transid 32270 /dev/sdf1
[ 13.017482] BTRFS: device fsid 8ef575d9-2465-479c-bf9c-067e2e417770
devid 3 transid 32270 /dev/sdg1
[ 13.020782] BTRFS: device fsid 8ef575d9-2465-479c-bf9c-067e2e417770
devid 2 transid 32270 /dev/sda1
root@engelserver:/# mount -t btrfs -o recovery,ro /dev/sdf1 /home
mount: wrong fs type, bad option, bad superblock on /dev/sdf1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
[ 440.600286] BTRFS info (device sda1): enabling auto recovery
[ 440.600288] BTRFS info (device sda1): disk space caching is enabled
[ 440.601304] BTRFS (device sda1): bad tree block start 0 5845480062976
[ 440.601854] BTRFS (device sda1): bad tree block start 0 5845480054784
[ 440.601971] BTRFS (device sda1): bad tree block start 0 5845480067072
[ 440.602203] BTRFS (device sda1): bad tree block start 0 5845480050688
[ 440.602467] BTRFS (device sda1): bad tree block start 0 5845480071168
[ 440.602720] BTRFS (device sda1): bad tree block start 0 5845480058880
[ 440.603000] BTRFS (device sda1): bad tree block start 0 5845480075264
[ 440.603270] BTRFS (device sda1): bad tree block start 0 5845480079360
[ 440.603558] BTRFS (device sda1): bad tree block start 0 5845480046592
[ 440.603685] BTRFS (device sda1): bad tree block start 0 5845480091648
[ 440.630760] BTRFS: Failed to read block groups: -5
[ 440.651385] BTRFS: open_ctree failed
Fail to read block groups....
What about try btrfs check with --init-extent-tree to reset the block
groups with all devices attached?
Thanks,
Qu
Remove affected device (reboot)
dmesg
[ 11.809442] Btrfs loaded
[ 11.835961] BTRFS: device label mythstorage devid 1 transid 634 /dev/sdc1
[ 11.847034] BTRFS info (device sdc1): enabling auto defrag
[ 11.857649] BTRFS info (device sdc1): disk space caching is enabled
[ 12.586106] BTRFS: device fsid 8ef575d9-2465-479c-bf9c-067e2e417770
devid 2 transid 32270 /dev/sda1
[ 12.599428] BTRFS: device fsid 8ef575d9-2465-479c-bf9c-067e2e417770
devid 3 transid 32270 /dev/sdb1
root@engelserver:/# btrfs fi sh
Label: 'mythstorage' uuid: 9b454272-6800-4b3c-b196-9e180407a6cb
Total devices 1 FS bytes used 4.27MiB
devid 1 size 931.51GiB used 2.04GiB path /dev/sdc1
Label: none uuid: 8ef575d9-2465-479c-bf9c-067e2e417770
Total devices 3 FS bytes used 3.02TiB
devid 2 size 2.73TiB used 1.77TiB path /dev/sda1
devid 3 size 2.73TiB used 1.77TiB path /dev/sdb1
*** Some devices missing
Btrfs v3.17-dirty
root@engelserver:/# mount -t btrfs -o ro,degraded /dev/sda1 /home
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
root@engelserver:/# dmesg | grep -i btrfs
[ 299.792397] BTRFS info (device sdb1): allowing degraded mounts
[ 299.792400] BTRFS info (device sdb1): disk space caching is enabled
[ 299.964814] BTRFS (device sdb1): bad tree block start 0 5845002854400
[ 299.964896] BTRFS (device sdb1): bad tree block start 0 5845002854400
[ 299.964965] BTRFS: Failed to read block groups: -5
[ 299.987542] BTRFS: open_ctree failed
root@engelserver:/# btrfs restore -i /dev/sda1 /media/mythstorage/
warning, device 1 is missing
warning, device 1 is missing
warning devid 1 not found already
Check tree block failed, want=5845480062976, have=65536
Check tree block failed, want=5845480062976, have=65536
read block failed check_tree_block
Couldn't read chunk tree
Could not open root, trying backup super
warning, device 1 is missing
warning, device 1 is missing
warning devid 1 not found already
Check tree block failed, want=5845480062976, have=65536
Check tree block failed, want=5845480062976, have=65536
read block failed check_tree_block
Couldn't read chunk tree
Could not open root, trying backup super
warning, device 1 is missing
warning, device 1 is missing
warning devid 1 not found already
Check tree block failed, want=5845480062976, have=65536
Check tree block failed, want=5845480062976, have=65536
read block failed check_tree_block
Couldn't read chunk tree
Could not open root, trying backup super
root@engelserver:/# btrfs rescue chunk-recover -v /dev/sdb1
http://sebsauvage.net/paste/?ed4437f335d9a563#Hy3yzV8fIrgEotLNs3dPg+xX4loQZ/DMxOhXQ/HqdVc=
root@engelserver:/# btrfs rescue super-recover -v /dev/sda1
All Devices:
Device: id = 3, name = /dev/sdc1
Device: id = 1, name = /dev/sdb1
Device: id = 2, name = /dev/sda1
Before Recovering:
[All good supers]:
device name = /dev/sdc1
superblock bytenr = 65536
device name = /dev/sdc1
superblock bytenr = 67108864
device name = /dev/sdc1
superblock bytenr = 274877906944
device name = /dev/sdb1
superblock bytenr = 65536
device name = /dev/sdb1
superblock bytenr = 67108864
device name = /dev/sdb1
superblock bytenr = 274877906944
device name = /dev/sda1
superblock bytenr = 65536
device name = /dev/sda1
superblock bytenr = 67108864
device name = /dev/sda1
superblock bytenr = 274877906944
[All bad supers]:
All supers are valid, no need to recover
Did I miss anything?
Thanks
René
2014-10-30 4:54 GMT+01:00 Anand Jain <Anand.Jain@xxxxxxxxxx>:
yes that's the one.
btrfs-progs: fix device missing of btrfs fi show with seed devices
Thanks
On 10/29/2014 08:15 PM, Rene Thomas wrote:
Can't find commit in official repos
Get "fatal: bad object 915902c5002485fb13d27c4b699a73fb66cc0f09" from git
show
Found
----------------------------
commit 2513077f2f830b4bc83d528bfb6979eb461918bd
btrfs-progs: fix device missing of btrfs fi show with seed devices
----------------------------
Thanks
René
2014-10-29 4:45 GMT+01:00 Anand Jain <Anand.Jain@xxxxxxxxxx>:
this is (most likely) due to patch below,
----------------
commit 915902c5002485fb13d27c4b699a73fb66cc0f09
btrfs-progs: fix device missing of btrfs fi show with seed devices
----------------
Could you try to back out the patch from progs and give it a shot ?
and pls report what you see. Thanks.
On 10/25/14 00:43, Rene Thomas wrote:
# btrfs --version
Btrfs v3.17
# btrfs fi show
Label: 'mythstorage' uuid: 9b454272-6800-4b3c-b196-9e180407a6cb
Total devices 1 FS bytes used 2.36MiB
devid 1 size 931.51GiB used 10.04GiB path /dev/sdd1
Check tree block failed, want=5845480062976, have=0
Check tree block failed, want=5845480062976, have=0
Check tree block failed, want=5845480062976, have=65536
Check tree block failed, want=5845480062976, have=0
Check tree block failed, want=5845480062976, have=0
read block failed check_tree_block
Couldn't read chunk tree
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