RE: Problems with btrfs

["David C. Partridge" <david.partridge@perdrix.co.uk>]

[-- Attachment #1: Type: text/plain, Size: 1220 bytes --]

Here is the result of btrfs check after applying the patch

Dave
-----Original Message-----
From: Qu Wenruo [mailto:quwenruo.btrfs@gmx.com] 
Sent: 29 April 2018 09:36
To: David C. Partridge
Subject: Re: Problems with btrfs

Here is the patched binary tree block.

You could apply them by the following command (copy1 and copy2 are the same).

# dd if=copy1.img of=<device> bs=1 count=16K seek=25942081536 # dd if=copy1.img of=<device> bs=1 count=16K seek=26478952448

And after that, try btrfs check to see if it reports new error.

Thanks,
Qu

On 2018年04月29日 16:24, David C. Partridge wrote:
> Attached as requested
> 
> -----Original Message-----
> From: linux-btrfs-owner@vger.kernel.org 
> [mailto:linux-btrfs-owner@vger.kernel.org] On Behalf Of Qu Wenruo
> Sent: 29 April 2018 03:08
> To: David C. Partridge; linux-btrfs@vger.kernel.org
> Subject: Re: Problems with btrfs
> 
> 
> 
> On 2018年04月29日 09:55, David C. Partridge wrote:
>> Not a problem
>>
>> See attached
> 
> The final binary dump:
> 
> # dd if=<device> of=/tmp/copy1.img bs=1 count=16K skip=25942081536 # 
> dd if=<device> of=/tmp/copy2.img bs=1 count=16K skip=26478952448
> 
> Thanks,
> Qu
> 

[-- Attachment #2: btrfs-check1.log --]
[-- Type: application/octet-stream, Size: 866 bytes --]

root@ubuntu:/home/amonra# btrfs check /dev/mapper/Charon--vg-root
Checking filesystem on /dev/mapper/Charon--vg-root
UUID: a0a6c5a6-061f-4c86-bc14-7f9abf3cb57e
checking extents
owner ref check failed [224304857088 16384]
checking free space cache
Wanted bytes 32768, found 65536 for off 236453888000
Wanted bytes 536870912, found 65536 for off 236453888000
cache appears valid but isn't 236453888000
Wanted bytes 16384, found 557056 for off 279384162304
Wanted bytes 536870912, found 557056 for off 279384162304
cache appears valid but isn't 279384162304
found 26552209419 bytes used err is -22
total csum bytes: 23801264
total tree bytes: 2076573696
total fs tree bytes: 1966374912
total extent tree bytes: 77348864
btree space waste bytes: 571022401
file data blocks allocated: 192698281984
 referenced 132292960256
root@ubuntu:/home/amonra#