From: David Woodhouse <dwmw2@infradead.org>
To: Ric Wheeler <rwheeler@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
linux-scsi@vger.kernel.org, linux-fsdevel@vger.kernel.org,
Black_David@emc.com,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Tom Coughlan <coughlan@redhat.com>,
Matthew Wilcox <matthew@wil.cx>
Subject: Re: thin provisioned LUN support
Date: Fri, 07 Nov 2008 13:17:24 +0100 [thread overview]
Message-ID: <1226060244.3997.7.camel@macbook.infradead.org> (raw)
In-Reply-To: <49143142.4010809@redhat.com>
On Fri, 2008-11-07 at 07:14 -0500, Ric Wheeler wrote:
> I think that discard merging would be helpful (especially for devices
> with more reasonable sized unmap chunks).
First we need generic fixes to the elevator code. It already notices
when you submit a request which _precisely_ matches an existing one in
both start and length, and will ensure that they happen in the right
order. But it _doesn't_ cope with requests that just happen to overlap.
It's on my TODO list; fairly near the top.
--
David Woodhouse Open Source Technology Centre
David.Woodhouse@intel.com Intel Corporation
next prev parent reply other threads:[~2008-11-07 12:17 UTC|newest]
Thread overview: 118+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-06 14:43 thin provisioned LUN support Ric Wheeler
2008-11-06 15:17 ` James Bottomley
2008-11-06 15:24 ` David Woodhouse
2008-11-06 16:00 ` Ric Wheeler
2008-11-06 16:40 ` Martin K. Petersen
2008-11-06 17:04 ` Ric Wheeler
2008-11-06 17:15 ` Matthew Wilcox
2008-11-07 12:05 ` Jens Axboe
2008-11-07 12:14 ` Ric Wheeler
2008-11-07 12:17 ` David Woodhouse [this message]
2008-11-07 12:19 ` Jens Axboe
2008-11-07 14:26 ` thin provisioned LUN support & file system allocation policy Ric Wheeler
2008-11-07 14:34 ` Matthew Wilcox
2008-11-07 14:45 ` Jörn Engel
2008-11-07 14:43 ` Theodore Tso
2008-11-07 14:54 ` Ric Wheeler
2008-11-07 14:54 ` Ric Wheeler
2008-11-07 15:26 ` jim owens
2008-11-07 15:31 ` David Woodhouse
2008-11-07 15:35 ` jim owens
2008-11-07 15:46 ` Theodore Tso
2008-11-07 15:51 ` Martin K. Petersen
2008-11-07 16:06 ` Ric Wheeler
2008-11-07 15:56 ` James Bottomley
2008-11-07 15:36 ` James Bottomley
2008-11-07 15:48 ` David Woodhouse
2008-11-07 15:36 ` Theodore Tso
2008-11-07 15:45 ` Matthew Wilcox
2008-11-07 15:45 ` Matthew Wilcox
2008-11-07 16:07 ` jim owens
2008-11-07 16:12 ` James Bottomley
2008-11-07 16:23 ` jim owens
2008-11-07 16:02 ` Ric Wheeler
2008-11-07 14:55 ` Matthew Wilcox
2008-11-07 14:55 ` Matthew Wilcox
2008-11-07 15:20 ` thin provisioned LUN support James Bottomley
2008-11-09 23:08 ` Dave Chinner
2008-11-09 23:37 ` James Bottomley
2008-11-10 0:33 ` Dave Chinner
2008-11-10 14:31 ` James Bottomley
2008-11-07 15:49 ` Chris Mason
2008-11-07 16:00 ` Martin K. Petersen
2008-11-07 16:06 ` James Bottomley
2008-11-07 16:11 ` Chris Mason
2008-11-07 16:18 ` James Bottomley
2008-11-07 16:22 ` Ric Wheeler
2008-11-07 16:27 ` James Bottomley
2008-11-07 16:28 ` David Woodhouse
2008-11-07 17:22 ` Chris Mason
2008-11-07 18:09 ` Ric Wheeler
2008-11-07 18:36 ` Theodore Tso
2008-11-07 18:41 ` Ric Wheeler
2008-11-07 19:35 ` Theodore Tso
2008-11-07 19:55 ` Martin K. Petersen
2008-11-07 20:19 ` Theodore Tso
2008-11-07 20:21 ` Matthew Wilcox
2008-11-07 20:21 ` Matthew Wilcox
2008-11-07 20:26 ` Ric Wheeler
2008-11-07 20:48 ` Chris Mason
2008-11-07 21:04 ` Ric Wheeler
2008-11-07 21:13 ` Theodore Tso
2008-11-07 20:42 ` Theodore Tso
2008-11-07 21:06 ` Martin K. Petersen
2008-11-07 20:37 ` Ric Wheeler
2008-11-10 2:44 ` Black_David
2008-11-10 2:44 ` Black_David
2008-11-10 2:36 ` Black_David
2008-11-10 2:36 ` Black_David
2008-11-07 18:41 ` Ric Wheeler
2008-11-07 19:44 ` jim owens
2008-11-07 19:48 ` Matthew Wilcox
2008-11-07 19:50 ` Ric Wheeler
2008-11-09 23:36 ` Dave Chinner
2008-11-10 3:40 ` Thin provisioning & arrays Black_David
2008-11-10 3:40 ` Black_David
2008-11-10 8:31 ` Dave Chinner
2008-11-10 9:59 ` David Woodhouse
2008-11-10 13:30 ` Matthew Wilcox
2008-11-10 13:36 ` Jens Axboe
2008-11-10 17:05 ` UNMAP is a hint Black_David
2008-11-10 17:05 ` Black_David
2008-11-10 17:30 ` Matthew Wilcox
2008-11-10 17:56 ` Ric Wheeler
2008-11-10 22:18 ` Thin provisioning & arrays Dave Chinner
2008-11-11 1:23 ` Black_David
2008-11-11 1:23 ` Black_David
2008-11-11 2:09 ` Keith Owens
2008-11-11 13:59 ` Ric Wheeler
2008-11-11 14:55 ` jim owens
2008-11-11 15:38 ` Ric Wheeler
2008-11-11 15:59 ` jim owens
2008-11-11 16:25 ` Ric Wheeler
2008-11-11 16:53 ` jim owens
2008-11-11 23:08 ` Dave Chinner
2008-11-11 23:52 ` jim owens
2008-11-11 23:52 ` jim owens
2008-11-11 22:49 ` Dave Chinner
2008-11-06 15:27 ` thin provisioned LUN support jim owens
2008-11-06 15:57 ` jim owens
2008-11-06 16:21 ` James Bottomley
[not found] ` <yq1d4h8nao5.fsf@sermon.lab.mkp.net>
2008-11-06 15:42 ` Ric Wheeler
2008-11-06 15:57 ` David Woodhouse
2008-11-06 22:36 ` Dave Chinner
2008-11-06 22:55 ` Ric Wheeler
2008-11-06 23:06 ` James Bottomley
2008-11-06 23:10 ` Ric Wheeler
2008-11-06 23:26 ` James Bottomley
2008-11-06 22:55 ` Ric Wheeler
2008-11-06 23:32 ` thin provisioned LUN support - T10 activity Black_David
2008-11-06 23:32 ` Black_David
2008-11-07 11:59 ` thin provisioned LUN support Artem Bityutskiy
2008-11-10 20:39 ` Aggregating discard requests in the filesystem Matthew Wilcox
2008-11-10 20:44 ` Chris Mason
2008-11-11 0:12 ` Brad Boyer
2008-11-11 15:25 ` jim owens
2008-11-11 16:40 ` thin provisioned LUN support Christoph Hellwig
2008-11-11 17:07 ` jim owens
2008-11-11 17:33 ` Christoph Hellwig
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