linux-ext4 - Re: ext4 filesystem corruption with 4.10-rc2 on ppc64le

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Date:   Thu, 5 Jan 2017 21:44:10 +1100
From:   Anton Blanchard <anton@...ba.org>
To:     Theodore Ts'o <tytso@....edu>
Cc:     Chandan Rajendra <chandan@...ux.vnet.ibm.com>, jack@...e.cz,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>, axboe@...com,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        linux-ext4@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Jens Axboe <axboe@...nel.dk>, torvalds@...ux-foundation.org
Subject: Re: ext4 filesystem corruption with 4.10-rc2 on ppc64le

Hi Ted,

> Anton or Chandan, could you do me a favor and verify whether or not
> 64k block sizes are working for you on ppcle on ext4 by running
> xfstests?  Light duty testing works for me but when I stress ext4 with
> pagesize==blocksize on ppcle64 via xfstests, it blows up.  I suspect
> (but am not sure) it's due to (non-upstream) device driver issues, and
> a verification that you can run xfstests on your ppcle64 systems using
> standard upstream device drivers would be very helpful, since I don't
> have easy console access on the machines I have access to at
> $WORK.  :-(

I fired off an xfstests run, and it looks good. There are 3 failures,
but they seem to be setup issues on my part. I also double checked
those same three failed on 4.8.

Chandan has been running the test suite regularly, and plans to do a
run against mainline too.

Anton
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