linux-ext4 - Re: A warning from 3.6+ with bigalloc and delalloc when running xfstest

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Message-ID: <20121014021834.GA4418@thunk.org>
Date:	Sat, 13 Oct 2012 22:18:34 -0400
From:	Theodore Ts'o <tytso@....edu>
To:	Andrey Sidorov <qrxd43@...orola.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: A warning from 3.6+ with bigalloc and delalloc when running
 xfstest

On Sat, Oct 13, 2012 at 02:29:48PM -0400, Andrey Sidorov wrote:
> I didn't see it as well, but wanted to be sure it won't break file
> system once occurred.
> Our use-case is mostly dio and pre-fallocated writes, so I think we'll be fine.
> Thanks!

Yes, that will work just fine.  That in fact was the use case I was
primarily interested in when I did the bigalloc work.  The main
weaknesses come from using buffered writes with delayed allocation and
when the disk is almost full.

					- Ted
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