From: Lars Marowsky-Bree <lmb@suse.de>
To: Michael Tokarev <mjt@tls.msk.ru>, Luca Berra <bluca@comedia.it>
Cc: linux-raid@vger.kernel.org
Subject: Re: [PATCH 1/2] md bitmap bug fixes
Date: Sat, 19 Mar 2005 10:05:56 +0100 [thread overview]
Message-ID: <20050319090556.GK18819@marowsky-bree.de> (raw)
In-Reply-To: <423B4C4B.7070404@tls.msk.ru>
On 2005-03-19T00:46:51, Michael Tokarev <mjt@tls.msk.ru> wrote:
> o DRBD allows local drive to be a bit ahead compared to remote one
> (configurable), while md will wait for all drives to complete a write.
The async writes have been added to md recently my Paul too.
> There's a case which is questionable in the first place: what to
> do if local part of the mirror fails? Md will happily run on
> single remote component in degraded mode, while DRBD will probably
> fail...
drbd will continue correctly; it'll detach the local drive and run all
IO over the network. Also, the direction of the sync has been decoupled
from the primary/secondary status for a while, and the drbd-0.8
(development branch) is almost 90% there to allow both nodes IO access
to the device.
(I think; maybe it's also already done. It's been a while since I tried
playing with that particular version.)
Sincerely,
Lars Marowsky-Brée <lmb@suse.de>
--
High Availability & Clustering
SUSE Labs, Research and Development
SUSE LINUX Products GmbH - A Novell Business
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next prev parent reply other threads:[~2005-03-19 9:05 UTC|newest]
Thread overview: 71+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-09 22:18 [PATCH 1/2] md bitmap bug fixes Paul Clements
2005-03-09 22:19 ` [PATCH 2/2] " Paul Clements
2005-03-14 4:43 ` [PATCH 1/2] " Neil Brown
2005-03-14 9:44 ` Lars Marowsky-Bree
2005-03-14 10:22 ` Neil Brown
2005-03-14 11:24 ` Lars Marowsky-Bree
2005-03-14 22:54 ` Neil Brown
2005-03-18 10:33 ` Lars Marowsky-Bree
2005-03-18 12:52 ` Peter T. Breuer
2005-03-18 13:42 ` Lars Marowsky-Bree
2005-03-18 14:50 ` Peter T. Breuer
2005-03-18 17:03 ` Paul Clements
2005-03-18 18:43 ` Peter T. Breuer
2005-03-18 19:01 ` Mario Holbe
2005-03-18 19:33 ` Peter T. Breuer
2005-03-18 20:24 ` Mario Holbe
2005-03-18 21:01 ` Andy Smith
2005-03-19 11:43 ` Peter T. Breuer
2005-03-19 12:58 ` Lars Marowsky-Bree
2005-03-19 13:27 ` Peter T. Breuer
2005-03-19 14:07 ` Lars Marowsky-Bree
2005-03-19 15:06 ` Peter T. Breuer
2005-03-19 15:24 ` Mario Holbe
2005-03-19 15:58 ` Peter T. Breuer
2005-03-19 16:24 ` Lars Marowsky-Bree
2005-03-19 17:19 ` Peter T. Breuer
2005-03-19 17:36 ` Lars Marowsky-Bree
2005-03-19 17:44 ` Guy
2005-03-19 17:54 ` Lars Marowsky-Bree
2005-03-19 18:05 ` Guy
2005-03-19 20:29 ` berk walker
2005-03-19 18:11 ` Peter T. Breuer
2005-03-18 19:43 ` Paul Clements
2005-03-19 12:10 ` Peter T. Breuer
2005-03-21 16:07 ` Paul Clements
2005-03-21 18:56 ` Luca Berra
2005-03-21 19:58 ` Paul Clements
2005-03-21 20:45 ` Peter T. Breuer
2005-03-21 21:09 ` Gil
2005-03-21 21:19 ` Paul Clements
2005-03-21 22:15 ` Peter T. Breuer
2005-03-22 22:35 ` Peter T. Breuer
2005-03-21 21:32 ` Guy
2005-03-22 9:35 ` Luca Berra
2005-03-22 10:02 ` Peter T. Breuer
2005-03-23 20:31 ` Luca Berra
2005-03-25 18:51 ` Peter T. Breuer
2005-03-25 20:54 ` berk walker
2005-03-25 20:56 ` berk walker
2005-03-18 17:16 ` Luca Berra
2005-03-18 17:57 ` Lars Marowsky-Bree
2005-03-18 21:46 ` Michael Tokarev
2005-03-19 9:05 ` Lars Marowsky-Bree [this message]
2005-03-19 12:16 ` Peter T. Breuer
2005-03-19 12:34 ` Michael Tokarev
2005-03-19 12:53 ` Peter T. Breuer
2005-03-19 16:08 ` "Robust Read" (was: [PATCH 1/2] md bitmap bug fixes) Michael Tokarev
2005-03-19 17:03 ` "Robust Read" Peter T. Breuer
2005-03-19 20:20 ` Michael Tokarev
2005-03-19 20:56 ` Peter T. Breuer
2005-03-19 22:05 ` Michael Tokarev
2005-03-19 22:30 ` Peter T. Breuer
2005-03-15 4:24 ` [PATCH 1/2] md bitmap bug fixes Paul Clements
2005-03-17 20:51 ` [PATCH 0/3] md bitmap-based asynchronous writes Paul Clements
2005-03-17 20:53 ` [PATCH 1/3] md bitmap async write enabling Paul Clements
2005-03-17 20:55 ` [PATCH 2/3] md bitmap async writes for raid1 Paul Clements
2005-03-17 20:56 ` [PATCH 3/3] mdadm: bitmap async writes Paul Clements
2005-03-21 4:21 ` [PATCH 0/3] md bitmap-based asynchronous writes Neil Brown
2005-03-21 16:31 ` Paul Clements
2005-03-21 22:09 ` Neil Brown
2005-03-22 8:35 ` Peter T. Breuer
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