From: Mark Fasheh <mark.fasheh@oracle.com>
To: Pekka J Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Hellwig <hch@infradead.org>, Zach Brown <zab@zabbo.net>,
David Teigland <teigland@redhat.com>,
Pekka Enberg <penberg@gmail.com>,
akpm@osdl.org, linux-kernel@vger.kernel.org,
linux-cluster@redhat.com
Subject: Re: GFS
Date: Wed, 10 Aug 2005 09:26:18 -0700 [thread overview]
Message-ID: <20050810162618.GH21228@ca-server1.us.oracle.com> (raw)
In-Reply-To: <courier.42F9AD38.000018F9@courier.cs.helsinki.fi>
On Wed, Aug 10, 2005 at 10:31:04AM +0300, Pekka J Enberg wrote:
> It seems to me that the distributed locks must be acquired in ->nopage
> anyway to solve the problem with memcpy() between two mmap'd regions. One
> possible solution would be for the lock manager to detect deadlocks and
> break some locks accordingly. Don't know how well that would mix with
> ->nopage though...
Yeah, my experience with ->nopage so far has indicated to me that we are to
avoid erroring out if at all possible which I believe is what we'd have to
do if a deadlock is found.
Also, I'm not sure how multiple dlms would coordinate deadlock detection in
that case.
This may sound naive, but so far OCFS2 has avoided the nead for deadlock
detection... I'd hate to have to add it now -- better to try avoiding them
in the first place.
--Mark
--
Mark Fasheh
Senior Software Developer, Oracle
mark.fasheh@oracle.com
next prev parent reply other threads:[~2005-08-10 16:27 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-02 7:18 [PATCH 00/14] GFS David Teigland
2005-08-02 7:45 ` Arjan van de Ven
2005-08-02 14:57 ` Jan Engelhardt
2005-08-02 15:02 ` Arjan van de Ven
2005-08-03 1:00 ` Hans Reiser
2005-08-03 4:07 ` Kyle Moffett
2005-08-03 6:37 ` Jan Engelhardt
2005-08-03 9:09 ` Arjan van de Ven
2005-08-03 3:56 ` David Teigland
2005-08-03 9:17 ` Arjan van de Ven
2005-08-03 10:08 ` David Teigland
2005-08-03 10:37 ` Lars Marowsky-Bree
2005-08-03 18:54 ` Mark Fasheh
2005-08-05 7:14 ` David Teigland
2005-08-05 7:27 ` [Linux-cluster] " Mike Christie
2005-08-05 7:30 ` Mike Christie
2005-08-05 7:34 ` Arjan van de Ven
2005-08-05 9:44 ` David Teigland
2005-08-05 10:07 ` Jörn Engel
2005-08-05 10:31 ` David Teigland
2005-08-05 8:28 ` Jan Engelhardt
2005-08-05 8:34 ` Arjan van de Ven
2005-08-08 6:26 ` David Teigland
2005-08-11 6:06 ` David Teigland
2005-08-11 6:55 ` Arjan van de Ven
2005-08-02 10:16 ` Pekka Enberg
2005-08-03 6:36 ` David Teigland
2005-08-08 14:14 ` GFS Pekka J Enberg
2005-08-08 18:32 ` GFS Zach Brown
2005-08-09 14:49 ` GFS Pekka Enberg
2005-08-09 17:17 ` GFS Zach Brown
2005-08-09 18:35 ` GFS Pekka J Enberg
2005-08-10 4:48 ` GFS Pekka J Enberg
2005-08-10 7:21 ` GFS Christoph Hellwig
2005-08-10 7:31 ` GFS Pekka J Enberg
2005-08-10 16:26 ` Mark Fasheh [this message]
2005-08-10 16:57 ` GFS Pekka J Enberg
2005-08-10 18:21 ` GFS Mark Fasheh
2005-08-10 20:18 ` GFS Pekka J Enberg
2005-08-10 22:07 ` GFS Mark Fasheh
2005-08-11 4:41 ` GFS Pekka J Enberg
2005-08-10 5:59 ` GFS David Teigland
2005-08-10 6:06 ` GFS Pekka J Enberg
2005-08-03 6:44 ` [PATCH 00/14] GFS Pekka Enberg
2005-08-08 9:57 ` David Teigland
2005-08-08 10:00 ` GFS Pekka J Enberg
2005-08-08 10:05 ` [PATCH 00/14] GFS Arjan van de Ven
2005-08-08 10:20 ` Jörn Engel
2005-08-08 10:18 ` GFS Pekka J Enberg
2005-08-08 10:56 ` GFS David Teigland
2005-08-08 10:57 ` GFS Pekka J Enberg
2005-08-08 11:39 ` GFS David Teigland
2005-08-08 10:34 ` GFS Pekka J Enberg
2005-08-09 14:55 ` GFS Pekka J Enberg
2005-08-10 7:40 ` GFS Pekka J Enberg
2005-08-10 7:43 ` GFS Christoph Hellwig
2005-08-09 15:20 ` [PATCH 00/14] GFS Al Viro
2005-08-10 7:03 ` Christoph Hellwig
2005-08-10 10:30 ` Lars Marowsky-Bree
2005-08-10 10:32 ` Christoph Hellwig
2005-08-10 10:34 ` Lars Marowsky-Bree
2005-08-10 10:54 ` Christoph Hellwig
2005-08-10 11:02 ` Lars Marowsky-Bree
2005-08-10 11:05 ` Christoph Hellwig
2005-08-10 11:09 ` Lars Marowsky-Bree
2005-08-10 11:11 ` Christoph Hellwig
2005-08-10 13:26 ` [Linux-cluster] " AJ Lewis
2005-08-10 15:43 ` Kyle Moffett
2005-08-11 8:17 ` GFS - updated patches David Teigland
2005-08-11 8:21 ` [Linux-cluster] " Michael
2005-08-11 8:46 ` David Teigland
2005-08-11 8:49 ` Michael
2005-08-11 8:32 ` Arjan van de Ven
2005-08-11 8:50 ` David Teigland
2005-08-11 8:50 ` Arjan van de Ven
2005-08-11 9:16 ` David Teigland
2005-08-11 10:04 ` Pekka Enberg
2005-08-11 9:54 ` [Linux-cluster] " Michael
2005-08-11 10:00 ` Pekka Enberg
2005-08-11 7:10 GFS Pekka J Enberg
2005-08-11 16:33 ` GFS Zach Brown
2005-08-11 16:35 ` GFS Christoph Hellwig
2005-08-11 16:39 ` GFS Zach Brown
2005-08-11 16:44 ` GFS Pekka Enberg
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