From: Joel Becker <Joel.Becker@oracle.com>
To: Pavel Machek <pavel@ucw.cz>
Cc: David Teigland <teigland@redhat.com>,
Andrew Morton <akpm@osdl.org>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-cluster@redhat.com
Subject: Re: GFS, what's remaining
Date: Sun, 4 Sep 2005 15:18:20 -0700 [thread overview]
Message-ID: <20050904221820.GB8684@ca-server1.us.oracle.com> (raw)
In-Reply-To: <20050904203344.GA1987@elf.ucw.cz>
On Sun, Sep 04, 2005 at 10:33:44PM +0200, Pavel Machek wrote:
> > - read-only mount
> > - "specatator" mount (like ro but no journal allocated for the mount,
> > no fencing needed for failed node that was mounted as specatator)
>
> I'd call it "real-read-only", and yes, that's very usefull
> mount. Could we get it for ext3, too?
In OCFS2 we call readonly+journal+connected-to-cluster "soft
readonly". We're a live node, other nodes know we exist, and we can
flush pending transactions during the rw->ro transition. In addition,
we can allow a ro->rw transition.
The no-journal+no-cluster-connection mode we call "hard
readonly". This is the mode you get when a device itself is readonly,
because you can't do *anything*.
Joel
--
"Lately I've been talking in my sleep.
Can't imagine what I'd have to say.
Except my world will be right
When love comes back my way."
Joel Becker
Senior Member of Technical Staff
Oracle
E-mail: joel.becker@oracle.com
Phone: (650) 506-8127
next prev parent reply other threads:[~2005-09-04 22:18 UTC|newest]
Thread overview: 110+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-01 10:46 David Teigland
2005-09-01 10:42 ` Arjan van de Ven
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 15:11 ` 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 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 6:42 ` Daniel Phillips
2005-09-03 6:46 ` [Linux-cluster] " Wim Coekaerts
2005-09-03 22:21 ` Daniel Phillips
2005-09-04 1:09 ` Joel Becker
2005-09-04 1:32 ` Andrew Morton
2005-09-04 3:06 ` Joel Becker
2005-09-04 4:22 ` Daniel Phillips
2005-09-04 4:30 ` Joel Becker
2005-09-04 4:51 ` Daniel Phillips
2005-09-04 5:00 ` Joel Becker
2005-09-04 5:52 ` 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 5:49 ` Joel Becker
2005-09-05 4:30 ` David Teigland
2005-09-05 8:54 ` Andrew Morton
2005-09-05 9:24 ` David Teigland
2005-09-05 9:19 ` 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 19:53 ` Andrew Morton
2005-09-05 23:20 ` Alan Cox
2005-09-05 23:06 ` Andrew Morton
2005-09-14 9:01 ` 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 6:40 ` Daniel Phillips
2005-09-04 7:28 ` Andrew Morton
2005-09-04 8:01 ` Joel Becker
2005-09-04 8:18 ` Andrew Morton
2005-09-04 9:11 ` Joel Becker
2005-09-04 9:18 ` Andrew Morton
2005-09-04 9:39 ` Joel Becker
2005-09-04 18:03 ` Hua Zhong
2005-09-04 19:51 ` Daniel Phillips
2005-09-04 8:37 ` Alan Cox
2005-09-05 23:32 ` Joel Becker
2005-09-03 5:57 ` Daniel Phillips
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 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 14:31 ` Dmitry Torokhov
2005-09-06 13:42 ` Alan Cox
2005-09-03 7:06 ` GFS, what's remaining 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 6:42 ` D. Hazelton
2005-09-03 10:35 ` David Teigland
2005-09-03 20:56 ` Daniel Phillips
2005-09-04 20:33 ` Pavel Machek
2005-09-04 22:18 ` Joel Becker [this message]
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
2005-09-01 11:35 ` Arjan van de Ven
2005-09-02 9:44 ` David Teigland
2005-09-02 11:46 ` Jörn Engel
2005-09-03 5:28 ` Greg KH
2005-09-05 3:47 ` David Teigland
2005-09-05 8:58 ` Jörn Engel
2005-09-05 9:18 ` 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 8:00 ` Pekka Enberg
2005-09-10 10:11 ` Arjan van de Ven
2005-09-05 6:29 ` 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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