Re: kernel 5.2 read time tree block corruption

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On 2019/10/15 下午8:24, Qu Wenruo wrote:
> 
> 
> On 2019/10/15 下午6:15, José Luis wrote:
>> Dear devs,
>>
>> I cannot use kernel >= 5.2, They cannot mount sdb2 nor sb3 both btrfs
>> filesystems. I can work as intended on 4.19 which is an LTS version,
>> previously using 5.1 but Manjaro removed it from their repositories.
>>
>> More info:
>> · dmesg:
>>> [oct15 13:47] BTRFS info (device sdb2): disk space caching is enabled
>>> [  +0,009974] BTRFS info (device sdb2): enabling ssd optimizations
>>> [  +0,000481] BTRFS critical (device sdb2): corrupt leaf: root=5 block=30622793728 slot=115, invalid key objectid: has 18446744073709551605 expect 6 or [256, 18446744073709551360] or 18446744073709551604
> 
> In fs tree, you are hitting a free space cache inode?
> That doesn't sound good.
> 
> Please provide the following dump:
> 
> # btrfs ins dump-tree -b 30622793728 /dev/sdb2
> 
> The output may contain filename, feel free to remove filenames.
> 
>>> [  +0,000002] BTRFS error (device sdb2): block=30622793728 read time tree block corruption detected
>>> [  +0,000021] BTRFS warning (device sdb2): failed to read fs tree: -5
>>> [  +0,044643] BTRFS error (device sdb2): open_ctree failed
>>
>>
>>
>> · sudo mount  /dev/sdb2 /mnt/
>>> mount: /mnt: no se puede leer el superbloque en /dev/sdb2.
>>
>> (cannot read superblock on /dev...)
>>
>> · sudo btrfs rescue super-recover /dev/sdb2
>>> All supers are valid, no need to recover
>>
>>
>> · sudo btrfs check /dev/sdb2
>>> Opening filesystem to check...
>>> Checking filesystem on /dev/sdb2
>>> UUID: ff559c37-bc38-491c-9edc-fa6bb0874942
>>> [1/7] checking root items
>>> [2/7] checking extents
>>> [3/7] checking free space cache
>>> cache and super generation don't match, space cache will be invalidated
>>> [4/7] checking fs roots
>>> root 5 inode 431 errors 1040, bad file extent, some csum missing
>>> root 5 inode 755 errors 1040, bad file extent, some csum missing
>>> root 5 inode 2379 errors 1040, bad file extent, some csum missing
>>> root 5 inode 11721 errors 1040, bad file extent, some csum missing
>>> root 5 inode 12211 errors 1040, bad file extent, some csum missing
>>> root 5 inode 15368 errors 1040, bad file extent, some csum missing
>>> root 5 inode 35329 errors 1040, bad file extent, some csum missing
>>> root 5 inode 960427 errors 1040, bad file extent, some csum missing
>>> root 5 inode 18446744073709551605 errors 2001, no inode item, link count wrong
>>>         unresolved ref dir 256 index 0 namelen 12 name $RECYCLE.BIN filetype 2 errors 6, no dir index, no inode ref
> 
> Check is reporting the same problem of the inode.
> 
> We need to make sure what's going wrong on that leaf, based on the
> mentioned dump.
> 
> For the csum missing error and bad file extent, it should be a big problem.

s/should/should not/

> if you want to make sure what's going wrong, please provide the
> following dump:
> 
> # btrfs ins dump-tree -t 5 /dev/sdb2 | grep -A 7
> 
> Also feel free the censor the filenames.
> 
> Thanks,
> Qu
> 
>>> root 388 inode 1245 errors 1040, bad file extent, some csum missing
>>> root 388 inode 1288 errors 1040, bad file extent, some csum missing
>>> root 388 inode 1292 errors 1040, bad file extent, some csum missing
>>> root 388 inode 1313 errors 1040, bad file extent, some csum missing
>>> root 388 inode 11870 errors 1040, bad file extent, some csum missing
>>> root 388 inode 68126 errors 1040, bad file extent, some csum missing
>>> root 388 inode 88051 errors 1040, bad file extent, some csum missing
>>> root 388 inode 88255 errors 1040, bad file extent, some csum missing
>>> root 388 inode 88455 errors 1040, bad file extent, some csum missing
>>> root 388 inode 88588 errors 1040, bad file extent, some csum missing
>>> root 388 inode 88784 errors 1040, bad file extent, some csum missing
>>> root 388 inode 88916 errors 1040, bad file extent, some csum missing
>>> ERROR: errors found in fs roots
>>> found 37167415296 bytes used, error(s) found
>>> total csum bytes: 33793568
>>> total tree bytes: 1676722176
>>> total fs tree bytes: 1540243456
>>> total extent tree bytes: 81510400
>>> btree space waste bytes: 306327457
>>> file data blocks allocated: 42200928256
>>>  referenced 52868354048
>>
>>
>>
>>
>> ---
>>
>> Regards,
>> José Luis.
>>
> 

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