Re: LTP fs_fill test results in BTRFS warning (device loop0): could not allocate space for a delete; will truncate on mount warnings

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On Fri, Sep 6, 2019 at 3:35 PM Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote:
>
> On Fri, Sep 6, 2019 at 1:21 PM Rachel Sibley <rasibley@xxxxxxxxxx> wrote:
> >
> > Hello,
> >
> > While running LTP [1] as part of CKI [2] testing, we noticed the fs_fill
> > test fails pretty
> > consistently with BTRFS warnings seen below, this is seen with recent
> > kernel (5.2.12).
> > I have included the logs below for reference.
>
> I'm only 6 for 6, but  so far can't get it to trigger with 5.3.0-rc7

Also cannot reproduce, 10 for 10 with 5.2.13-200.fc30.x86_64 which was
just built in koji, same as 5.2.12 which was quickly replaced with a
single unrelated revert for touchpads.

But comparing fs_fill logs, yours has a ton more writer threads (~6x)
and ENOSPC counts. Possibly related?

-- 
Chris Murphy



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