From: Ric Wheeler <rwheeler@redhat.com>
To: Andrei Tanas <andrei@tanas.ca>
Cc: "'NeilBrown'" <neilb@suse.de>, linux-kernel@vger.kernel.org
Subject: Re: MD/RAID: what's wrong with sector 1953519935?
Date: Wed, 26 Aug 2009 06:34:14 -0400 [thread overview]
Message-ID: <4A950FA6.4020408@redhat.com> (raw)
In-Reply-To: <005401ca25ff$9ac91cc0$d05b5640$@ca>
On 08/25/2009 11:45 PM, Andrei Tanas wrote:
>>>> I would suggest that Andrei might try to write and clear the IO
>>>>
>> error
>>
>>>> at that
>>>> offset. You can use Mark Lord's hdparm to clear a specific sector or
>>>> just do the
>>>> math (carefully!) and dd over it. It the write succeeds (without
>>>> bumping your
>>>> remapped sectors count) this is a likely match to this problem,
>>>>
>>> I've tried dd multiple times, it always succeeds, and the relocated
>>>
>> sector
>>
>>> count is currently 1 on this drive, even though this particular fault
>>> happened at least 3 times so far.
>>>
>>>
>> I would bump that count way up (say to 2) and see if you have an
>> issue...
>>
> Not sure what you mean by this: how can I artificially bump the relocated
> sector count?
>
>
Sorry - you need to set the tunable:
/sys/block/mdX/md/safe_mode_delay
to something like "2" to prevent that sector from being a hotspot...
ric
next prev parent reply other threads:[~2009-08-26 10:34 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-26 0:32 MD/RAID: what's wrong with sector 1953519935? Andrei Tanas
2009-08-26 0:50 ` NeilBrown
2009-08-26 1:06 ` Ric Wheeler
2009-08-26 1:24 ` NeilBrown
2009-08-26 1:31 ` Ric Wheeler
2009-08-26 2:22 ` Andrei Tanas
2009-08-26 2:41 ` Ric Wheeler
2009-08-26 3:45 ` Andrei Tanas
2009-08-26 10:34 ` Ric Wheeler [this message]
2009-08-26 14:46 ` Andrei Tanas
2009-08-26 14:49 ` Andrei Tanas
2009-08-26 15:39 ` Ric Wheeler
2009-08-26 18:12 ` Andrei Tanas
2009-08-27 0:07 ` Mark Lord
2009-08-27 1:37 ` Andrei Tanas
2009-08-27 2:33 ` Robert Hancock
2009-08-27 21:22 ` MD/RAID time out writing superblock Andrei Tanas
2009-08-27 21:57 ` Ric Wheeler
2009-08-31 8:10 ` Tejun Heo
2009-08-31 12:04 ` Ric Wheeler
2009-08-31 12:20 ` Tejun Heo
2009-09-07 11:44 ` Chris Webb
2009-09-07 11:59 ` Chris Webb
2009-09-09 12:02 ` Chris Webb
2009-09-14 7:41 ` Tejun Heo
2009-09-14 7:44 ` Tejun Heo
2009-09-14 12:48 ` Mark Lord
2009-09-14 13:05 ` Tejun Heo
2009-09-14 14:25 ` Mark Lord
2009-09-16 23:19 ` Chris Webb
2009-09-17 13:29 ` Mark Lord
2009-09-17 13:32 ` Mark Lord
2009-09-17 13:37 ` Chris Webb
2009-09-17 15:35 ` Tejun Heo
2009-09-17 16:16 ` Mark Lord
2009-09-17 16:17 ` Mark Lord
2009-09-18 17:05 ` Chris Webb
2009-09-21 10:26 ` Chris Webb
2009-09-21 19:47 ` Mark Lord
2009-09-22 6:16 ` Robert Hancock
2009-09-20 18:36 ` Robert Hancock
2009-09-14 13:11 ` Henrique de Moraes Holschuh
2009-09-14 13:24 ` Tejun Heo
2009-09-14 14:02 ` Henrique de Moraes Holschuh
2009-09-14 14:34 ` Tejun Heo
2009-09-14 13:14 ` Gabor Gombas
2009-09-07 16:55 ` Allan Wind
2009-09-07 23:26 ` Thomas Fjellstrom
2009-09-14 7:46 ` Tejun Heo
2009-09-14 21:13 ` Thomas Fjellstrom
2009-09-14 22:23 ` Tejun Heo
2009-09-16 22:28 ` Chris Webb
2009-09-16 23:47 ` Tejun Heo
2009-09-17 0:34 ` Neil Brown
2009-09-17 12:00 ` Chris Webb
2009-09-17 11:57 ` Chris Webb
2009-09-17 15:44 ` Tejun Heo
2009-09-18 17:07 ` Chris Webb
2009-09-20 18:46 ` Robert Hancock
2009-09-21 0:02 ` Kyle Moffett
2009-09-17 13:35 ` Mark Lord
2009-09-17 15:47 ` Tejun Heo
2009-08-31 12:21 ` Mark Lord
2009-08-31 23:45 ` Mark Lord
2009-09-01 13:07 ` Andrei Tanas
2009-09-01 13:15 ` Mark Lord
2009-09-01 13:30 ` Tejun Heo
2009-09-01 13:47 ` Ric Wheeler
2009-09-01 14:18 ` Andrei Tanas
2009-09-14 5:30 ` Marc Giger
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