From: Brad Campbell <brad@wasp.net.au>
To: RAID Linux <linux-raid@vger.kernel.org>
Subject: Re: ext3 journal on software raid (was Re: PROBLEM: Kernel 2.6.10 crashing repeatedly and hard)
Date: Wed, 05 Jan 2005 13:14:58 +0400 [thread overview]
Message-ID: <41DBB012.5040308@wasp.net.au> (raw)
In-Reply-To: <4umsa2-c9q.ln1@news.it.uc3m.es>
Peter T. Breuer wrote:
> Brad Campbell <brad@wasp.net.au> wrote:
>
>>If a bit has flipped on a parity stripe and thus the parity is inconsistent. When I pop out a disk
>>and put it back in, the array is going to be written from parity data that is not quite right. (The
>>problem I believe you were talking about where you have two identical disks and one is inconsistent,
>>which one do you read from? is similar). And thus the reconstructed array is going to have different
>>contents to the array before I failed the disk.
>>
>>Therefore it should show the error. No?
>
>
> It will not detect it as an error, if that is what you mean.
Now here we have a difference of opinion.
I'm detecting errors using md5sums and fsck.
If the drive checks out clean 1 minute, but has a bit error in a parity stripe and I remove/re-add a
drive the array is going to rebuild that disk from the remaning data and parity. Therefore the data
on that drive is going to differ compared to what it was previously.
Next time I do an fsck or md5sum I'm going to notice that something has changed. I'd call that an error.
Brad
next prev parent reply other threads:[~2005-01-05 9:14 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200501030916.j039Gqe23568@inv.it.uc3m.es>
2005-01-03 10:17 ` ext3 journal on software raid (was Re: PROBLEM: Kernel 2.6.10 crashing repeatedly and hard) Guy
2005-01-03 11:31 ` Peter T. Breuer
2005-01-03 17:34 ` Guy
2005-01-03 19:20 ` ext3 Gordon Henderson
2005-01-03 19:47 ` ext3 Morten Sylvest Olsen
2005-01-03 20:05 ` ext3 Gordon Henderson
2005-01-03 17:46 ` ext3 journal on software raid (was Re: PROBLEM: Kernel 2.6.10 crashing repeatedly and hard) maarten
2005-01-03 19:52 ` maarten
2005-01-03 20:41 ` Peter T. Breuer
2005-01-03 23:19 ` Peter T. Breuer
2005-01-03 23:46 ` Neil Brown
2005-01-04 0:28 ` Peter T. Breuer
2005-01-04 1:18 ` Alvin Oga
2005-01-04 4:29 ` Neil Brown
2005-01-04 8:43 ` Peter T. Breuer
2005-01-04 2:07 ` Neil Brown
2005-01-04 2:16 ` Ewan Grantham
2005-01-04 2:22 ` Neil Brown
2005-01-04 2:41 ` Andy Smith
2005-01-04 3:42 ` Neil Brown
2005-01-04 9:50 ` Peter T. Breuer
2005-01-04 14:15 ` David Greaves
2005-01-04 15:20 ` Peter T. Breuer
2005-01-04 16:42 ` Guy
2005-01-04 17:46 ` Peter T. Breuer
2005-01-04 9:30 ` Maarten
2005-01-04 10:18 ` Peter T. Breuer
2005-01-04 13:36 ` Maarten
2005-01-04 14:13 ` Peter T. Breuer
2005-01-04 19:22 ` maarten
2005-01-04 20:05 ` Peter T. Breuer
2005-01-04 21:38 ` Guy
2005-01-04 23:53 ` Peter T. Breuer
2005-01-05 0:58 ` Mikael Abrahamsson
2005-01-04 21:48 ` maarten
2005-01-04 23:14 ` Peter T. Breuer
2005-01-05 1:53 ` maarten
2005-01-04 9:46 ` Peter T. Breuer
2005-01-04 19:02 ` maarten
2005-01-04 19:12 ` David Greaves
2005-01-04 21:08 ` Peter T. Breuer
2005-01-04 22:02 ` Brad Campbell
2005-01-04 23:20 ` Peter T. Breuer
2005-01-05 5:44 ` Brad Campbell
2005-01-05 9:00 ` Peter T. Breuer
2005-01-05 9:14 ` Brad Campbell [this message]
2005-01-05 9:28 ` Peter T. Breuer
2005-01-05 9:43 ` Brad Campbell
2005-01-05 15:09 ` Guy
2005-01-05 15:52 ` maarten
2005-01-05 10:04 ` Andy Smith
2005-01-04 22:21 ` Neil Brown
2005-01-05 0:08 ` Peter T. Breuer
2005-01-04 22:29 ` Neil Brown
2005-01-05 0:19 ` Peter T. Breuer
2005-01-05 1:19 ` Jure Pe_ar
2005-01-05 2:29 ` Peter T. Breuer
2005-01-05 0:38 ` maarten
2005-01-04 9:40 ` Peter T. Breuer
2005-01-04 11:57 ` Which drive gets read in case of inconsistency? [was: ext3 journal on software raid etc] Michael Tokarev
2005-01-04 12:40 ` Morten Sylvest Olsen
2005-01-04 12:44 ` Peter T. Breuer
2005-01-04 14:22 ` Maarten
2005-01-04 14:56 ` Peter T. Breuer
2005-01-04 14:03 ` ext3 journal on software raid (was Re: PROBLEM: Kernel 2.6.10 crashing repeatedly and hard) David Greaves
2005-01-04 14:07 ` Peter T. Breuer
2005-01-04 14:43 ` David Greaves
2005-01-04 15:12 ` Peter T. Breuer
2005-01-04 16:54 ` David Greaves
2005-01-04 17:42 ` Peter T. Breuer
2005-01-04 19:12 ` David Greaves
2005-01-04 0:45 ` maarten
2005-01-04 10:14 ` Peter T. Breuer
2005-01-04 13:24 ` Maarten
2005-01-04 14:05 ` Peter T. Breuer
2005-01-04 15:31 ` Maarten
2005-01-04 16:21 ` Peter T. Breuer
2005-01-04 20:55 ` maarten
2005-01-04 21:11 ` Peter T. Breuer
2005-01-04 21:38 ` Peter T. Breuer
2005-01-04 23:29 ` Guy
2005-01-04 19:57 ` Mikael Abrahamsson
2005-01-04 21:05 ` maarten
2005-01-04 21:26 ` Alvin Oga
2005-01-04 21:46 ` Guy
2005-01-03 20:22 ` Peter T. Breuer
2005-01-03 23:05 ` Guy
2005-01-04 0:08 ` maarten
2005-01-04 8:57 ` I'm glad I don't live in Spain (was Re: ext3 journal on software raid) David L. Smith-Uchida
2005-01-03 21:36 ` ext3 journal on software raid (was Re: PROBLEM: Kernel 2.6.10 crashing repeatedly and hard) Guy
2005-01-04 0:15 ` maarten
2005-01-04 11:21 ` Michael Tokarev
2005-01-03 9:30 Peter T. Breuer
-- strict thread matches above, loose matches on Subject: below --
2004-12-30 0:31 PROBLEM: Kernel 2.6.10 crashing repeatedly and hard Georg C. F. Greve
2004-12-30 16:23 ` Georg C. F. Greve
2004-12-30 17:39 ` Peter T. Breuer
2004-12-30 19:50 ` Michael Tokarev
2004-12-30 21:39 ` Peter T. Breuer
2005-01-02 19:42 ` ext3 journal on software raid (was Re: PROBLEM: Kernel 2.6.10 crashing repeatedly and hard) Andy Smith
2005-01-02 20:18 ` Peter T. Breuer
2005-01-03 0:30 ` Andy Smith
2005-01-03 6:41 ` Neil Brown
2005-01-03 8:37 ` Peter T. Breuer
2005-01-03 8:03 ` Peter T. Breuer
2005-01-03 8:58 ` Guy
2005-01-03 12:11 ` Michael Tokarev
2005-01-03 14:23 ` Peter T. Breuer
2005-01-03 18:30 ` maarten
2005-01-03 21:36 ` Michael Tokarev
2005-01-05 9:56 ` Andy Smith
2005-01-05 10:44 ` Alvin Oga
2005-01-05 10:56 ` Brad Campbell
2005-01-05 11:39 ` Alvin Oga
2005-01-05 12:02 ` Brad Campbell
2005-01-05 13:23 ` Alvin Oga
2005-01-05 13:33 ` Brad Campbell
2005-01-05 14:12 ` Erik Mouw
2005-01-05 14:37 ` Michael Tokarev
2005-01-05 17:11 ` Erik Mouw
2005-01-06 5:41 ` Brad Campbell
2005-01-05 15:17 ` Guy
2005-01-05 15:33 ` Alvin Oga
2005-01-05 16:22 ` Michael Tokarev
2005-01-05 17:23 ` Peter T. Breuer
2005-01-05 16:23 ` Andy Smith
2005-01-05 16:30 ` Andy Smith
2005-01-05 17:07 ` Guy
2005-01-05 17:21 ` Alvin Oga
2005-01-05 17:32 ` Guy
2005-01-05 18:37 ` Alvin Oga
2005-01-05 17:26 ` David Greaves
2005-01-05 18:16 ` Peter T. Breuer
2005-01-05 18:28 ` Guy
2005-01-05 18:26 ` Guy
2005-01-05 15:48 ` Peter T. Breuer
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