Re: uncorrectable errors in Raid 10

[Steffen Sindzinski <stesind@gmail.com>]

Hi,

I think just some XWayland Nouveau bug:

Nov 23 12:46:26 bigbox kernel: nouveau 0000:01:00.0: gr: TRAP ch 22 
[007d08d000 Xwayland[781]]
Nov 23 12:46:26 bigbox kernel: nouveau 0000:01:00.0: gr: GPC0/TPC0/TEX: 
80000041
Nov 23 12:46:26 bigbox kernel: nouveau 0000:01:00.0: gr: GPC0/TPC1/TEX: 
80000041
Nov 23 12:46:26 bigbox kernel: nouveau 0000:01:00.0: gr: GPC0/TPC2/TEX: 
80000041
Nov 23 12:46:26 bigbox kernel: nouveau 0000:01:00.0: gr: GPC0/TPC3/TEX: 
80000041
Nov 23 12:46:26 bigbox kernel: nouveau 0000:01:00.0: gr: GPC0/TPC4/TEX: 
80000041
Nov 23 12:46:26 bigbox kernel: nouveau 0000:01:00.0: fifo: read fault at 
0005860000 engine 00 [GR] client 15 [GPC0/PE_4] reason 02 [PTE] on 
channel 22 [007d08d000 Xwayland[781]]


Steffen


Am 23.11.2017 um 13:14 schrieb Qu Wenruo:
> 
> 
> On 2017年11月23日 20:02, Steffen Sindzinski wrote:
>> Hi,
>>
>> I updated to btrfs-progs v4.14-5-gf09e98a3. Unfortunately after 10h
>> Gnome desktop / Arch crashed with btrfs check --lowmem unfinished. I
>> will run it this night again.
> 
> Any kernel backtrace about the crash?
> 
> IIRC user space program like btrfs check should not trigger a kernel crash.
> 
>>
>> The result until crash was:
>>
>> Checking filesystem on /dev/sdd2
>> UUID: 4fafd0d4-7dd9-4dcc-9a33-5f1ad9555358
>> ERROR: extent[15923092037632, 73728] referencer count mismatch (root:
>> 260, owner: 3631467, offset: 1019904) wanted: 4, have: 6
>> ERROR: extent[16078964924416, 69632] referencer count mismatch (root:
>> 260, owner: 4086589, offset: 4296704) wanted: 5, have: 7
> 
> This is known bug, please use this branch instead.
> https://github.com/adam900710/btrfs-progs/tree/lowmem_fix
> 
> Thanks,
> Qu
> 
>>
>> Steffen
>>
>>
>> Am 22.11.2017 um 17:42 schrieb Chris Murphy:
>>> On Wed, Nov 22, 2017 at 9:38 AM, Steffen Sindzinski
>>> <stesind@gmail.com> wrote:
>>>> Hello,
>>>>
>>>> I did btrfs check --readonly on both disk without finding any error. To
>>>> reconfirm I did a scrub again which still has found 2 uncorrectable
>>>> errors.
>>>
>>> Try --mode=lowmem option with btrfs-progs 4.3.3 or better 4.14. This
>>> is a new implementation of btrfs check and sometimes it comes up with
>>> different results. It's strange that there's only this error found by
>>> scrub and not by btrfs check which should be fully checking all
>>> metadata for sanity, and in the process it would surely hit a bad
>>> checksum.
>>>
>>>
>> -- 
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>