Re: Regression in handling power cuts since 3a1e819b4e80 ("ovl: store file handle of lower inode on copy up")

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On Fri, 19 Oct 2018 at 16:59, Richard Weinberger <richard@xxxxxx> wrote:
> Am Freitag, 19. Oktober 2018, 16:45:53 CEST schrieb Richard Weinberger:
> > Well, I fear it uncovers a problem in UBIFS. We had already problems with overlayfs.
> > Did you bisect the problem and you are sure that the said commit is the first bad commit?
>
> Another thing, UBIFS has no export operations, so overlayfs will fall back to xattrs,
> if I read the commit correctly.
> Maybe this is the root of the problem.
>
> I'm currently traveling, so I cannot test much. Please make sure whether
> 3a1e819b4e80 is really the first bad commit.
> Then I can go for a bug hunt. :-)

I did another test and everything keeps pointing to the 3a1e819b4e80.

1) I switched to the 4.12.14
2) I confirmed problem exists there
3) I added "return 0;" at the beginning of ovl_set_origin()
4) I confirmed problem disappeared

-- 
Rafał




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