From: Lars Marowsky-Bree <lmb@suse.de>
To: Daniel Phillips <phillips@istop.com>, Andi Kleen <ak@suse.de>
Cc: linux clustering <linux-cluster@redhat.com>,
akpm@osdl.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: GFS, what's remaining
Date: Mon, 5 Sep 2005 16:14:32 +0200 [thread overview]
Message-ID: <20050905141432.GF5498@marowsky-bree.de> (raw)
In-Reply-To: <200509030157.31581.phillips@istop.com>
On 2005-09-03T01:57:31, Daniel Phillips <phillips@istop.com> wrote:
> The only current users of dlms are cluster filesystems. There are zero users
> of the userspace dlm api.
That is incorrect, and you're contradicting yourself here:
> What does have to be resolved is a common API for node management. It is not
> just cluster filesystems and their lock managers that have to interface to
> node management. Below the filesystem layer, cluster block devices and
> cluster volume management need to be coordinated by the same system, and
> above the filesystem layer, applications also need to be hooked into it.
> This work is, in a word, incomplete.
The Cluster Volume Management of LVM2 for example _does_ use simple
cluster-wide locks, and some OCFS2 scripts, I seem to recall, do too.
(EVMS2 in cluster-mode uses a verrry simple locking scheme which is
basically operated by the failover software and thus uses a different
model.)
Sincerely,
Lars Marowsky-Brée <lmb@suse.de>
--
High Availability & Clustering
SUSE Labs, Research and Development
SUSE LINUX Products GmbH - A Novell Business -- Charles Darwin
"Ignorance more frequently begets confidence than does knowledge"
WARNING: multiple messages have this Message-ID (diff)
From: Lars Marowsky-Bree <lmb@suse.de>
To: Daniel Phillips <phillips@istop.com>, Andi Kleen <ak@suse.de>
Cc: akpm@osdl.org, linux-fsdevel@vger.kernel.org,
linux clustering <linux-cluster@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: GFS, what's remaining
Date: Mon, 5 Sep 2005 16:14:32 +0200 [thread overview]
Message-ID: <20050905141432.GF5498@marowsky-bree.de> (raw)
In-Reply-To: <200509030157.31581.phillips@istop.com>
On 2005-09-03T01:57:31, Daniel Phillips <phillips@istop.com> wrote:
> The only current users of dlms are cluster filesystems. There are zero users
> of the userspace dlm api.
That is incorrect, and you're contradicting yourself here:
> What does have to be resolved is a common API for node management. It is not
> just cluster filesystems and their lock managers that have to interface to
> node management. Below the filesystem layer, cluster block devices and
> cluster volume management need to be coordinated by the same system, and
> above the filesystem layer, applications also need to be hooked into it.
> This work is, in a word, incomplete.
The Cluster Volume Management of LVM2 for example _does_ use simple
cluster-wide locks, and some OCFS2 scripts, I seem to recall, do too.
(EVMS2 in cluster-mode uses a verrry simple locking scheme which is
basically operated by the failover software and thus uses a different
model.)
Sincerely,
Lars Marowsky-Brée <lmb@suse.de>
--
High Availability & Clustering
SUSE Labs, Research and Development
SUSE LINUX Products GmbH - A Novell Business -- Charles Darwin
"Ignorance more frequently begets confidence than does knowledge"
next prev parent reply other threads:[~2005-09-05 14:15 UTC|newest]
Thread overview: 157+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-01 10:46 GFS, what's remaining David Teigland
2005-09-01 10:42 ` Arjan van de Ven
2005-09-01 10:59 ` Andrew Morton
2005-09-01 10:59 ` Andrew Morton
2005-09-01 14:49 ` Alan Cox
2005-09-01 14:27 ` Christoph Hellwig
2005-09-01 15:28 ` Alan Cox
2005-09-01 15:28 ` Alan Cox
2005-09-01 15:11 ` Lars Marowsky-Bree
2005-09-01 17:56 ` Christoph Hellwig
2005-09-02 7:04 ` David Teigland
2005-09-01 17:23 ` Daniel Phillips
2005-09-01 17:23 ` Daniel Phillips
2005-09-01 20:21 ` Andrew Morton
2005-09-01 20:21 ` Andrew Morton
2005-09-02 21:17 ` Andi Kleen
2005-09-02 23:03 ` Bryan Henderson
2005-09-03 0:16 ` Mark Fasheh
2005-09-03 0:16 ` Mark Fasheh
2005-09-03 6:42 ` Daniel Phillips
2005-09-03 6:42 ` Daniel Phillips
2005-09-03 6:46 ` [Linux-cluster] " Wim Coekaerts
2005-09-03 6:46 ` Wim Coekaerts
2005-09-03 22:21 ` [Linux-cluster] " Daniel Phillips
2005-09-03 22:21 ` Daniel Phillips
2005-09-04 1:09 ` [Linux-cluster] " Joel Becker
2005-09-04 1:32 ` Andrew Morton
2005-09-04 1:32 ` Andrew Morton
2005-09-04 3:06 ` [Linux-cluster] " Joel Becker
2005-09-04 3:06 ` Joel Becker
2005-09-04 4:22 ` [Linux-cluster] " Daniel Phillips
2005-09-04 4:30 ` Joel Becker
2005-09-04 4:51 ` Daniel Phillips
2005-09-04 4:51 ` Daniel Phillips
2005-09-04 5:00 ` [Linux-cluster] " Joel Becker
2005-09-04 5:00 ` Joel Becker
2005-09-04 5:52 ` [Linux-cluster] " Daniel Phillips
2005-09-04 5:56 ` Joel Becker
2005-09-04 4:46 ` Andrew Morton
2005-09-04 4:58 ` Joel Becker
2005-09-04 5:41 ` Andrew Morton
2005-09-04 5:41 ` Andrew Morton
2005-09-04 5:49 ` [Linux-cluster] " Joel Becker
2005-09-04 5:49 ` Joel Becker
2005-09-05 4:30 ` [Linux-cluster] " David Teigland
2005-09-05 4:30 ` David Teigland
2005-09-05 8:54 ` [Linux-cluster] " Andrew Morton
2005-09-05 9:24 ` David Teigland
2005-09-05 9:24 ` David Teigland
2005-09-05 9:19 ` [Linux-cluster] " Andrew Morton
2005-09-05 9:30 ` Daniel Phillips
2005-09-05 9:48 ` David Teigland
2005-09-05 12:21 ` Alan Cox
2005-09-05 12:21 ` Alan Cox
2005-09-05 19:53 ` [Linux-cluster] " Andrew Morton
2005-09-05 23:20 ` Alan Cox
2005-09-05 23:20 ` Alan Cox
2005-09-05 23:06 ` [Linux-cluster] " Andrew Morton
2005-09-05 23:06 ` Andrew Morton
2005-09-14 9:01 ` [Linux-cluster] " Patrick Caulfield
2005-09-14 9:46 ` Antonio Vargas
2005-09-05 19:11 ` kurt.hackel
2005-09-04 6:10 ` Mark Fasheh
2005-09-04 7:23 ` Andrew Morton
2005-09-04 8:17 ` Mark Fasheh
2005-09-04 8:37 ` Andrew Morton
2005-09-04 8:37 ` Andrew Morton
2005-09-04 6:40 ` [Linux-cluster] " Daniel Phillips
2005-09-04 7:28 ` Andrew Morton
2005-09-04 7:28 ` Andrew Morton
2005-09-04 8:01 ` [Linux-cluster] " Joel Becker
2005-09-04 8:18 ` Andrew Morton
2005-09-04 9:11 ` Joel Becker
2005-09-04 9:11 ` Joel Becker
2005-09-04 9:18 ` [Linux-cluster] " Andrew Morton
2005-09-04 9:39 ` Joel Becker
2005-09-04 9:39 ` Joel Becker
2005-09-04 18:03 ` [Linux-cluster] " Hua Zhong
2005-09-04 19:51 ` Daniel Phillips
2005-09-04 19:51 ` Daniel Phillips
2005-09-04 7:12 ` Hua Zhong
2005-09-04 8:37 ` [Linux-cluster] " Alan Cox
2005-09-04 8:37 ` Alan Cox
2005-09-05 23:32 ` [Linux-cluster] " Joel Becker
2005-09-05 23:32 ` Joel Becker
2005-09-03 5:57 ` Daniel Phillips
2005-09-03 5:57 ` Daniel Phillips
2005-09-05 14:14 ` Lars Marowsky-Bree [this message]
2005-09-05 14:14 ` Lars Marowsky-Bree
2005-09-05 15:49 ` Daniel Phillips
2005-09-05 16:18 ` Dmitry Torokhov
2005-09-06 0:57 ` Daniel Phillips
2005-09-06 2:03 ` Dmitry Torokhov
2005-09-06 4:02 ` Daniel Phillips
2005-09-06 4:07 ` GFS, what's remainingh Dmitry Torokhov
2005-09-06 4:58 ` Daniel Phillips
2005-09-06 4:58 ` Daniel Phillips
2005-09-06 5:05 ` Dmitry Torokhov
2005-09-06 6:48 ` Daniel Phillips
2005-09-06 6:55 ` Dmitry Torokhov
2005-09-06 7:18 ` Daniel Phillips
2005-09-06 7:18 ` Daniel Phillips
2005-09-06 14:31 ` Dmitry Torokhov
2005-09-06 13:42 ` Alan Cox
2005-09-06 13:42 ` Alan Cox
2005-09-03 7:06 ` GFS, what's remaining Wim Coekaerts
2005-09-03 7:06 ` Wim Coekaerts
2005-09-03 7:27 ` Bernd Eckenfels
2005-09-05 14:16 ` Lars Marowsky-Bree
2005-09-05 20:24 ` Bernd Eckenfels
2005-09-05 20:53 ` Kurt Hackel
2005-09-05 23:37 ` Joel Becker
2005-09-06 5:24 ` Daniel Phillips
2005-09-06 12:55 ` Suparna Bhattacharya
2005-09-03 5:18 ` David Teigland
2005-09-03 6:14 ` Arjan van de Ven
2005-09-03 6:14 ` Arjan van de Ven
2005-09-03 6:42 ` D. Hazelton
2005-09-03 10:35 ` David Teigland
2005-09-03 20:56 ` Daniel Phillips
2005-09-03 20:56 ` Daniel Phillips
2005-09-04 20:33 ` Pavel Machek
2005-09-04 22:18 ` Joel Becker
2005-09-04 22:18 ` Joel Becker
2005-09-05 5:54 ` Theodore Ts'o
2005-09-05 7:09 ` Mark Fasheh
2005-09-05 14:07 ` Theodore Ts'o
2005-09-05 8:27 ` real read-only [was Re: GFS, what's remaining] Pavel Machek
2005-09-05 14:03 ` Theodore Ts'o
2005-09-05 10:44 ` [Linux-cluster] Re: GFS, what's remaining Stephen C. Tweedie
2005-09-05 10:44 ` Stephen C. Tweedie
2005-09-05 16:41 ` Greg Freemyer
2005-09-01 11:35 ` Arjan van de Ven
2005-09-01 11:35 ` Arjan van de Ven
2005-09-02 9:44 ` David Teigland
2005-09-02 11:46 ` Jörn Engel
2005-09-02 11:46 ` Jörn Engel
2005-09-03 5:28 ` Greg KH
2005-09-05 3:47 ` David Teigland
2005-09-05 3:47 ` David Teigland
2005-09-05 8:58 ` Jörn Engel
2005-09-05 9:18 ` David Teigland
2005-09-05 9:18 ` David Teigland
2005-09-05 5:43 ` David Teigland
2005-09-05 5:43 ` David Teigland
2005-09-05 6:32 ` Pekka Enberg
2005-09-05 7:55 ` David Teigland
2005-09-05 7:55 ` David Teigland
2005-09-05 8:00 ` Pekka Enberg
2005-09-05 8:00 ` Pekka Enberg
2005-09-10 10:11 ` Arjan van de Ven
2005-09-05 6:29 ` David Teigland
2005-09-05 6:29 ` David Teigland
2005-09-08 5:41 ` David Teigland
2005-09-08 5:41 ` David Teigland
2005-09-01 12:33 ` Pekka Enberg
2005-09-01 17:27 ` Daniel Phillips
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