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From: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
To: device-mapper development <dm-devel@redhat.com>
Subject: Re: [PATCH 0/2] Add suspended state check for target	messages
Date: Mon, 16 Nov 2009 16:25:26 +0900	[thread overview]
Message-ID: <4B00FE66.9020405@ct.jp.nec.com> (raw)
In-Reply-To: <20091113141930.GA3185@agk-dp.fab.redhat.com>

Hi Alasdair,

On 11/13/2009 11:19 PM +0900, Alasdair G Kergon wrote:
> Would DMF_BLOCK_IO_FOR_SUSPEND work instead?

Maybe.
But we must remember that using the flag means that multipath can't
use message during flushing I/Os, although I'm not sure how it hurts us.

If we'd like to keep the ability to use message during flushing I/Os,
we should use another flag for this purpose and set it after
dm_wait_for_completion().

Thanks,
Kiyoshi Ueda

  parent reply	other threads:[~2009-11-16  7:25 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-13  8:06 [PATCH 0/2] Add suspended state check for target messages Mike Anderson
2009-11-13  8:06 ` [PATCH 1/2] dm: Add accessor dm_table_md_suspended Mike Anderson
2009-11-13 14:19   ` Mike Snitzer
2009-11-13  8:06 ` [PATCH 2/2] dm: Add suspended check to multipath_message Mike Anderson
2009-11-13 18:35   ` malahal
2009-11-13 10:22 ` [PATCH 0/2] Add suspended state check for target messages Kiyoshi Ueda
2009-11-13 14:19   ` Alasdair G Kergon
2009-11-13 18:30     ` malahal
2009-11-13 18:47     ` Mike Anderson
2009-11-16  7:25     ` Kiyoshi Ueda [this message]
2009-11-16  7:43       ` Mike Anderson
2009-11-16 13:23       ` Alasdair G Kergon

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