On 2019/4/6 下午3:16, Nik. wrote: > > > 2019-04-06 02:03, Qu Wenruo: >> >> >> On 2019/4/6 上午3:38, Nik. wrote: >>> >>> >>> 2019-04-05 10:15, Qu Wenruo: >>>> >>>> >>>> On 2019/4/5 下午3:41, Nik. wrote: >>>>> >>>>> Below is the stderr of both commands: >>>>> >>>>> # btrfs inspect dump-tree -t chunk /dev/md0>DT-chunk.log >>>>> # btrfs inspect dump-tree -t extent /dev/md0>DT-extent.log >>>>> ERROR: leaf 1894009225216 slot 30 pointer invalid, offset 146038 >>>>> size 37 >>>>> leaf data limit 16283 >>>>> ERROR: skip remaining slots >>>>> >>>>> Since the output on stdout is pretty long even after gzip, I am >>>>> providing only the output of the first command as attachment. The >>>>> output >>>>> of the second command (25 MB after gzip -9) can be downloaded here: >>>>> >>>>> https://cloud.avgustinov.eu/index.php/s/AgbwWyCrbYjenq8 >>>> >>>> Sorry, I should have use a more specific command to get a smaller >>>> output. >>>> But anyway, your output is good enough for me to craft the fix patch. >>>> >>>> Here is the dirty fix branch: >>>> https://github.com/adam900710/btrfs-progs/tree/dirty_fix_for_nik >>>> >>>> Compile the btrfs-progs as usual. >>>> Just a late hint, you can disable document/btrfs-convert to reduce the >>>> dependency: >>>> $ ./configure --disable-documentation --disable-convert >>>> >>>> Then, inside btrfs-progs directory, call: >>>> # ./btrfs-corrupt-block -X /dev/md0 >>> incorrect offsets 15003 146075 >>> Open ctree failed >> >> Oh, I forgot it's in extent tree, which may need to be read out at mount >> time. >> >> Just a new flag can handle it. >> >> The branch is updated, please check. > > New output: > Successfully repair tree block at 1894009225216 > > # mount -t btrfs -o ro /dev/md0 /mnt/md0/ > mount: /mnt/md0: wrong fs type, bad option, bad superblock on /dev/md0, > missing codepage or helper program, or other error. > > # dmesg|tail > ... > [34848.784117] BTRFS info (device md0): disk space caching is enabled > [34848.954741] BTRFS info (device md0): bdev /dev/md0 errs: wr 0, rd 0, > flush 0, corrupt 2181, gen 0 > [34850.150789] BTRFS critical (device md0): corrupt leaf: root=1 > block=1894009225216 slot=30, unexpected item end, have 131072 expect 15003 > [34850.151209] BTRFS error (device md0): failed to read block groups: -5 > [34850.196156] BTRFS error (device md0): open_ctree failed > > It seems that there is improvement...
Debug info added.
Please try again, and sorry for the inconvenience. Hopes this is the
last try.
Thanks,
Qu
>
> Thank you.
> Nik.
> --
>
>> Thanks,
>> Qu
>>
>>>
>>> Actually there was one warning during make, I don't know of it is
>>> relevant:
>>> [CC] check/main.o
>>> check/main.c: In function ‘try_repair_inode’:
>>> check/main.c:2688:5: warning: ‘ret’ may be used uninitialized in this
>>> function [-Wmaybe-uninitialized]
>>> if (!ret) {
>>> ^
>>> check/main.c:2666:6: note: ‘ret’ was declared here
>>> int ret;
>>> ^~~
>>>
>>> The previous steps were as follow (output ommited, since nothing
>>> unexpected happened):
>>> #git clone --single-branch -v -b dirty_fix_for_nik
>>> https://github.com/adam900710/btrfs-progs.git
>>> #cd btrfs-progs/
>>> #./autogen.sh
>>> #./configure --disable-documentation --disable-convert
>>> #make
>>>
>>> Did I got the right branch? Or miss any step?
>>>
>>> Kind regards,
>>> Nik.
>>> --
>>>
>>>> If everything goes correctly, it should output something like:
>>>> Successfully repaired tree block at 1894009225216
>>>> (And please ignore any grammar error in my code)
>>>>
>>>> After that, please run a "btrfs check --readonly" to ensure no other
>>>> bit
>>>> flip in your fs.
>>>>
>>>> Thanks,
>>>> Qu
>>>>
>>>>
>>>>
>>>>>
>>>>> Hope this is ok.
>>>>>
>>>>> Regards,
>>>>> Nik.
>>>>> -
>>>>
>>
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