From: Bill Davidsen <davidsen@tmr.com>
To: Leon Woestenberg <leon.woestenberg@gmail.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Multiple disk failure, but slot numbers are corrupt and preventing assembly.
Date: Wed, 25 Apr 2007 18:31:11 -0400 [thread overview]
Message-ID: <462FD6AF.3070403@tmr.com> (raw)
In-Reply-To: <c384c5ea0704240544vd15e939kdf46bd75d341f30a@mail.gmail.com>
Leon Woestenberg wrote:
> In first instance we were searching for ways to tell mdadm what we
> know about the array (through mdadm.conf) but from all advice we got
> we have to take the 'usual' non-syncing-recreate approach.
>
> We will try to make disk clones first. Will dd suffice or do I need
> something more fancy that maybe copes with source drive read errors in
> a better fashion?
Yes to both. dd will be fine in most cases, and I suggest using noerror
to continue after errors, and oflag=direct just for performance. You
could use ddrescue, it supposedly copes better with errors, although I
don't know details.
--
bill davidsen <davidsen@tmr.com>
CTO TMR Associates, Inc
Doing interesting things with small computers since 1979
next prev parent reply other threads:[~2007-04-25 22:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-23 17:17 Multiple disk failure, but slot numbers are corrupt and preventing assembly Leon Woestenberg
2007-04-23 17:55 ` David Greaves
2007-04-24 7:04 ` Leon Woestenberg
2007-04-24 7:17 ` Leon Woestenberg
2007-04-24 8:32 ` David Greaves
2007-04-24 12:44 ` Leon Woestenberg
2007-04-24 13:06 ` David Greaves
2007-04-25 22:31 ` Bill Davidsen [this message]
2007-04-26 19:46 ` David Greaves
2007-04-26 23:36 ` Leon Woestenberg
2007-04-27 19:01 ` Bill Davidsen
2007-04-26 6:47 ` Neil Brown
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