From: Anton Blanchard <anton@samba.org>
Subject: Re: ext4 filesystem corruption with 4.10-rc2 on ppc64le
Date: Thu, 5 Jan 2017 21:44:10 +1100
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Cc: Jens Axboe <axboe@kernel.dk>, Stephen Rothwell <sfr@canb.auug.org.au>,
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 torvalds@linux-foundation.org, Chandan Rajendra <chandan@linux.vnet.ibm.com>,
 Paul Mackerras <paulus@samba.org>, linux-fsdevel@vger.kernel.org,
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To: Theodore Ts'o <tytso@mit.edu>
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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