UBIFS does not mount after powerfail

[Manfred Spraul]

Hi,
On 11/14/2017 07:49 PM, Manfred Spraul wrote:
> Hi Richard,
>
> On 11/13/2017 10:06 PM, Richard Weinberger wrote:
>>
>> No, the image that contains the first logical error.
>> UBIFS can mount even if there are many problems with the structure.
>> Therefore I need you to enable chk_fs.
> Done - and I even found a 2nd instance where the image got bad:
> https://sourceforge.net/projects/calculix-rpm/files/ubifs/chk_fs/
>
Sorry for the self-reply, I did another test:
I applied "ubifs: replay: Detect and kill orphaned xattrs", i.e. 
https://patchwork.ozlabs.org/patch/780667/.

Finding 1: It does not help
Finding 2: I get for some images lots of "UBIFS error (ubi0:0 pid 
13670): ubifs_replay_journal: Expected ino node, got: 1/2/3"

The last good image is e.g. 164908, the first image with such messages 
is 164909:
https://sourceforge.net/projects/calculix-rpm/files/ubifs/kill_xattr/

And, perhaps it helps to understand the issues:
The stress test is parallel, i.e. 4 parallel bash scripts that do 
something like "touch a b c ;rm c; mv a b;".

--
     Manfred