Re: Btrfs check dont repair

[Austin S Hemmelgarn <ahferroin7@gmail.com>]

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On 2015-09-23 10:39, Vackář František wrote:
> Hello,
>
> i have problem with my btrfs, can you help me, please? Its on my
> notebook. Sometimes it exhausted battery during sleep and died. But
> everytime FS was ok. But ones mount fail.
>
> Do you have any idea how repair it?
First off, the fact that you are on a relatively recent kernel and have 
an up-to-date copy of btrfs-progs is a very good thing :).  Secondly, 
I'm not certain if you did this or not, but always run btrfs check 
without the --repair option first, it can't fix everything yet, and 
there are still cases from time to time that it actually makes thing 
worse when you use the --repair option.  As for the kernel messages, 
those particular errors are not anything I've ever seen before.  Based 
on my limited knowledge of the BTRFS internals, I would agree with Hugo 
(and ironically, I got your response to his e-mail right as I finished 
this one...).
>
> Sorry for my english. :)
Don't feel bad, it's one of the hardest to learn languages for 
non-native speakers in the world (and even a lot of people who grew up 
speaking it don't consistently use correct grammar).  If only Esperanto 
or Interlingua had actually caught on...
>
> Frantisek Vackar
> ========================================
> [root@rak ~]# btrfs check --repair /dev/sdb2
> enabling repair mode
> Checking filesystem on /dev/sdb2
> UUID: 754a3186-c0ae-4680-ab28-864c8bdad8b5
> checking extents
> bad key ordering 0 1
> bad block 3242450944
> Errors found in extent allocation tree or chunk allocation
> Fixed 0 roots.
> checking free space cache
> cache and super generation don't match, space cache will be invalidated
> checking fs roots
> bad key ordering 0 1
> Trying to rebuild inode:705555
> root 5 inode 705555 errors 2001, no inode item, link count wrong
>          unresolved ref dir 403566 index 0 namelen 10 name .directory
> filetype 1 errors 6, no dir index, no inode ref
> Trying to rebuild inode:705569
> root 5 inode 705569 errors 2001, no inode item, link count wrong
>          unresolved ref dir 339745 index 0 namelen 18 name
> 15-03-20-Botanicka filetype 2 errors 6, no dir index, no inode ref
> =====MANY SIMILAR LINES=====
> Trying to rebuild inode:718060
> root 5 inode 718060 errors 2001, no inode item, link count wrong
>          unresolved ref dir 430527 index 0 namelen 10 name Win 7.vbox
> filetype 1 errors 6, no dir index, no inode ref
> found 1350650234080 bytes used err is 1
> total csum bytes: 0
> total tree bytes: 466538496
> total fs tree bytes: 17154048
> total extent tree bytes: 448659456
> btree space waste bytes: 94077759
> file data blocks allocated: 3997077504
>   referenced 3996086272
> btrfs-progs v4.1.2
>
> [root@rak ~]# mount /mnt/hdd-root/
> mount: wrong fs type, bad option, bad superblock on /dev/sdb2,
>         missing codepage or helper program, or other error
>
>         In some cases useful info is found in syslog - try
>         dmesg | tail or so.
>
> [root@rak ~]# dmesg | tail
> [ 1434.004203] ath5k: ath5k_hw_get_isr: ISR: 0x00000080 IMR: 0x00000000
> [ 1674.004209] ath5k: ath5k_hw_get_isr: ISR: 0x00000080 IMR: 0x00000000
> [ 2154.007675] ath5k: ath5k_hw_get_isr: ISR: 0x00000080 IMR: 0x00000000
> [ 4074.005033] ath5k: ath5k_hw_get_isr: ISR: 0x00000080 IMR: 0x00000000
> [ 4096.970037] BTRFS info (device sdb2): disk space caching is enabled
> [ 4108.444472] BTRFS critical (device sdb2): corrupt leaf, bad key
> order: block=3242455040,root=1, slot=0
> [ 4108.444649] BTRFS critical (device sdb2): corrupt leaf, bad key
> order: block=3242455040,root=1, slot=0
> [ 4108.444681] BTRFS error (device sdb2): Error removing orphan entry,
> stopping orphan cleanup
> [ 4108.444684] BTRFS error (device sdb2): could not do orphan cleanup -22
> [ 4111.047323] BTRFS: open_ctree failed
>
> [root@rak ~]# uname -a
> Linux rak 4.1.2-2-ARCH #1 SMP PREEMPT Wed Jul 15 08:30:32 UTC 2015
> x86_64 GNU/Linux
>
> [root@rak ~]# btrfs fi show /dev/sdb2
> Label: 'data'  uuid: 754a3186-c0ae-4680-ab28-864c8bdad8b5
>          Total devices 1 FS bytes used 1.23TiB
>          devid    1 size 1.72TiB used 1.24TiB path /dev/sdb2
>
> btrfs-progs v4.2
>
> [root@rak ~]# btrfs --version
> btrfs-progs v4.2
>
> [root@rak ~]#   btrfs fi show
> Label: 'data'  uuid: 754a3186-c0ae-4680-ab28-864c8bdad8b5
>          Total devices 1 FS bytes used 1.23TiB
>          devid    1 size 1.72TiB used 1.24TiB path /dev/sdb2
>
> btrfs-progs v4.2
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