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Re: [Qemu-devel] Locking block devices for concurrent access?
From: |
Michael Tokarev |
Subject: |
Re: [Qemu-devel] Locking block devices for concurrent access? |
Date: |
Thu, 22 Apr 2010 23:57:01 +0400 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.1.8) Gecko/20100306 Icedove/3.0.3 |
22.04.2010 23:21, Richard W.M. Jones wrote:
On Thu, Apr 22, 2010 at 01:36:30PM -0500, Anthony Liguori wrote:
I think we got to the point where there was general agreement on the
usefulness of lock=read|write but where there was still some contention
was on this whole notion of lock=exclusive|shared.
For that, there's a good reply by Daniel P. Berrange, there:
http://marc.info/?l=qemu-devel&m=126018305619696&w=2
From the libguestfs point of view, any sort of locking would be
preferable to the current situation. If someone wants to run with the
patch, I posted several versions and there was a lot of discussion on
qemu-devel in Nov/Dec 2009, starting with this message:
Subject: [Qemu-devel] [PATCH] Disk image shared and exclusive locks.
Message-ID:<address@hidden>
Aha, this is the discussion I were trying to find, but failed for
some unknown reason. Thank you Richard, I'm rehashing it all now...
/mjt