From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Frank Ren" <frankrq2009@gmx.com>, "mingo" <mingo@elte.hu>,
"a.p.zijlstra" <a.p.zijlstra@chello.nl>,
"jens.axboe" <jens.axboe@oracle.com>,
linux-kernel@vger.kernel.org, stable@kernel.org,
dm-devel@redhat.com, Alasdair G Kergon <agk@redhat.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>
Subject: Re: high iowait problem(Bug 12309 on bugzilla.kernel.org)
Date: Wed, 14 Apr 2010 10:25:08 -0400 [thread overview]
Message-ID: <yq1sk6yjem3.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <20100413135416.b537eee8.akpm@linux-foundation.org> (Andrew Morton's message of "Tue, 13 Apr 2010 13:54:16 -0700")
>>>>> "Andrew" == Andrew Morton <akpm@linux-foundation.org> writes:
Andrew> I'm seeing just one device-mapper change whcih went in over that
Andrew> timeframe:
Andrew> : commit e0f5cfa7c18b411634e73923841eccd3a4c0ce7f
Andrew> : Author: Martin K. Petersen <martin.petersen@oracle.com>
Andrew> : Date: Mon Jan 11 03:21:50 2010 -0500
Andrew> :
Andrew> : DM: Fix device mapper topology stacking
The topology changes do not modify anything in our runtime I/O path.
They only come into play during filesystem or logical volume creation on
top of devices that support reporting alignment/physical block size.
And you need recent dm and filesystem utilities for that to work.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2010-04-14 14:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20100331124834.192500@gmx.com>
2010-04-13 20:54 ` Andrew Morton
2010-04-14 14:25 ` Martin K. Petersen [this message]
2010-04-15 5:58 ` Steven B
2010-04-19 21:31 ` Andrew Morton
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