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From: berk walker <berk@panix.com>
To: "Peter T. Breuer" <ptb@lab.it.uc3m.es>
Cc: linux-raid@vger.kernel.org
Subject: Re: [PATCH 1/2] md bitmap bug fixes
Date: Fri, 25 Mar 2005 15:54:29 -0500	[thread overview]
Message-ID: <42447A85.2070409@panix.com> (raw)
In-Reply-To: <i63eh2-eat.ln1@news.it.uc3m.es>

as I understand it, the topic is what happens when a RAID0 which is 
split twixt remote sites loses communication.  What would you suggest as 
a method to keep the obvious from happening?

A proactive approach, perhaps?  Since, it seems, that write requests do 
not have to be ack'd immediatly, there *will* be a total sync loss.  Are 
the write logs deep enough to be able to be used to resync, once the 
systems realize that they are no longer connected?  From what I've read, 
the bitmaps will be no help in reconstruction, but just in error 
detection (correct me if needed).
This is indeed an interesting topic, and one that strikes close to home.
b-

  reply	other threads:[~2005-03-25 20:54 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 [this message]
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
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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