From: Alasdair G Kergon <agk@redhat.com>
To: Daniel Phillips <phillips@phunq.net>
Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru>,
Jens Axboe <jens.axboe@oracle.com>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org,
Peter Zijlstra <peterz@infradead.org>, Neil Brown <neilb@suse.de>
Subject: Re: [1/1] Block device throttling [Re: Distributed storage.]
Date: Fri, 31 Aug 2007 22:41:37 +0100 [thread overview]
Message-ID: <20070831214137.GD30122@agk.fab.redhat.com> (raw)
In-Reply-To: <200708301620.37965.phillips@phunq.net>
On Thu, Aug 30, 2007 at 04:20:35PM -0700, Daniel Phillips wrote:
> Resubmitting a bio or submitting a dependent bio from
> inside a block driver does not need to be throttled because all
> resources required to guarantee completion must have been obtained
> _before_ the bio was allowed to proceed into the block layer.
I'm toying with the idea of keeping track of the maximum device stack
depth for each stacked device, and only permitting it to increase in
controlled circumstances.
Alasdair
--
agk@redhat.com
next prev parent reply other threads:[~2007-08-31 21:43 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-31 17:13 Distributed storage Evgeniy Polyakov
2007-08-02 21:08 ` Daniel Phillips
2007-08-03 10:26 ` Evgeniy Polyakov
2007-08-03 10:57 ` Evgeniy Polyakov
2007-08-03 12:27 ` Peter Zijlstra
2007-08-03 13:49 ` Evgeniy Polyakov
2007-08-03 14:53 ` Peter Zijlstra
2007-08-03 19:48 ` Daniel Phillips
2007-08-03 19:41 ` Daniel Phillips
2007-08-04 1:19 ` Daniel Phillips
2007-08-04 16:37 ` Evgeniy Polyakov
2007-08-05 8:04 ` Daniel Phillips
2007-08-05 15:08 ` Evgeniy Polyakov
2007-08-05 21:23 ` Daniel Phillips
2007-08-06 8:25 ` Evgeniy Polyakov
2007-08-07 12:05 ` Jens Axboe
2007-08-07 18:24 ` Daniel Phillips
2007-08-07 20:55 ` Jens Axboe
2007-08-08 9:54 ` Block device throttling [Re: Distributed storage.] Evgeniy Polyakov
2007-08-08 10:17 ` [1/1] " Evgeniy Polyakov
2007-08-08 13:28 ` Evgeniy Polyakov
2007-08-12 23:16 ` Daniel Phillips
2007-08-13 8:18 ` Evgeniy Polyakov
2007-08-27 21:57 ` Daniel Phillips
2007-08-13 5:22 ` Daniel Phillips
2007-08-13 5:36 ` Daniel Phillips
2007-08-13 6:44 ` Daniel Phillips
2007-08-13 8:14 ` Evgeniy Polyakov
2007-08-13 11:04 ` Daniel Phillips
2007-08-13 12:04 ` Evgeniy Polyakov
2007-08-13 12:18 ` Daniel Phillips
2007-08-13 12:24 ` Evgeniy Polyakov
2007-08-13 8:23 ` Evgeniy Polyakov
2007-08-13 11:18 ` Daniel Phillips
2007-08-13 12:18 ` Evgeniy Polyakov
2007-08-13 13:04 ` Daniel Phillips
2007-08-14 8:46 ` Evgeniy Polyakov
2007-08-14 11:13 ` Daniel Phillips
2007-08-14 11:30 ` Evgeniy Polyakov
2007-08-14 11:35 ` Daniel Phillips
2007-08-14 11:50 ` Evgeniy Polyakov
2007-08-14 12:32 ` Daniel Phillips
2007-08-14 12:46 ` Evgeniy Polyakov
2007-08-14 12:54 ` Daniel Phillips
2007-08-12 23:36 ` Distributed storage Daniel Phillips
2007-08-13 7:28 ` Jens Axboe
2007-08-13 7:45 ` Jens Axboe
2007-08-13 9:08 ` Daniel Phillips
2007-08-13 9:13 ` Jens Axboe
2007-08-13 9:55 ` Daniel Phillips
2007-08-13 10:06 ` Jens Axboe
2007-08-13 10:15 ` Daniel Phillips
2007-08-13 10:22 ` Jens Axboe
2007-08-13 10:32 ` Daniel Phillips
2007-08-13 9:18 ` Evgeniy Polyakov
2007-08-13 10:12 ` Daniel Phillips
2007-08-13 11:03 ` Evgeniy Polyakov
2007-08-13 11:45 ` Daniel Phillips
2007-08-13 8:59 ` Daniel Phillips
2007-08-13 9:12 ` Jens Axboe
2007-08-13 23:27 ` Daniel Phillips
2007-08-03 4:09 ` Mike Snitzer
2007-08-03 10:42 ` Evgeniy Polyakov
2007-08-04 0:49 ` Daniel Phillips
2007-08-03 5:04 ` Manu Abraham
2007-08-03 10:44 ` Evgeniy Polyakov
2007-08-04 2:51 ` Dave Dillow
2007-08-04 3:44 ` Manu Abraham
2007-08-04 17:03 ` Evgeniy Polyakov
2007-08-04 0:41 ` Daniel Phillips
2007-08-04 16:44 ` Evgeniy Polyakov
2007-08-05 8:06 ` Daniel Phillips
2007-08-05 15:01 ` Evgeniy Polyakov
2007-08-05 21:35 ` Daniel Phillips
2007-08-06 8:28 ` Evgeniy Polyakov
[not found] ` <200708281027.59528.phillips@phunq.net>
[not found] ` <20070828175403.GA28440@2ka.mipt.ru>
[not found] ` <200708281408.06618.phillips@phunq.net>
2007-08-29 8:53 ` [1/1] Block device throttling [Re: Distributed storage.] Evgeniy Polyakov
2007-08-30 23:20 ` Daniel Phillips
2007-08-31 17:33 ` Evgeniy Polyakov
2007-08-31 21:41 ` Alasdair G Kergon [this message]
2007-09-02 4:42 ` Daniel Phillips
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