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From: Brad Campbell <brad@wasp.net.au>
To: Mikael Abrahamsson <swmike@swm.pp.se>
Cc: linux-raid@vger.kernel.org
Subject: Re: Spares and partitioning huge disks
Date: Sat, 15 Jan 2005 14:31:23 +0400	[thread overview]
Message-ID: <41E8F0FB.4090104@wasp.net.au> (raw)
In-Reply-To: <Pine.LNX.4.44.0501151050110.3584-100000@uplift.swm.pp.se>

Mikael Abrahamsson wrote:
> On Sat, 15 Jan 2005, Peter T. Breuer wrote:
> 
> 
>>I also agree that "redundancy per block" is probably a much better idea
>>than "redundancy per disk". Probably needs a "how hot are you?"
>>primitive, though!
> 
> 
> Would a methodology that'll do
> 
> if read error then
>   recreate the block from parity
>   write to sector that had read error

In theory this should reallocate the bad sector.

>   wait until write has completed

If the write fails, fail the drive as bad things are going to happen.

>   flush buffers
>   read back block from drive
>     if block still bad
>       fail disk
>   log result

Make sure the logging is done in such a way as mdadm can send you an E-mail and say. "Hey, sda just 
had a bad block. Be aware.

Brad

  reply	other threads:[~2005-01-15 10:31 UTC|newest]

Thread overview: 94+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-01-06 14:16 Spares and partitioning huge disks maarten
2005-01-06 16:46 ` Guy
2005-01-06 17:08   ` maarten
2005-01-06 17:31 ` Guy
2005-01-06 18:18   ` maarten
     [not found]     ` <41DD83DA.9040609@h3c.com>
2005-01-06 19:42       ` maarten
2005-01-07 20:59 ` Mario Holbe
2005-01-07 21:57   ` Guy
2005-01-08 10:22     ` Mario Holbe
2005-01-08 12:19       ` maarten
2005-01-08 16:33         ` Guy
2005-01-08 16:58           ` maarten
2005-01-08 14:52     ` Frank van Maarseveen
2005-01-08 15:50       ` Mario Holbe
2005-01-08 16:32       ` Guy
2005-01-08 17:16         ` maarten
2005-01-08 18:55           ` Guy
2005-01-08 19:25             ` maarten
2005-01-08 20:33               ` Mario Holbe
2005-01-08 23:01                 ` maarten
2005-01-09 10:10                   ` Mario Holbe
2005-01-09 16:23                     ` Guy
2005-01-09 16:36                       ` Michael Tokarev
2005-01-09 17:52                         ` Peter T. Breuer
2005-01-09 17:59                           ` Michael Tokarev
2005-01-09 18:34                             ` Peter T. Breuer
2005-01-09 20:28                             ` Guy
2005-01-09 20:47                               ` Peter T. Breuer
2005-01-10  7:19                                 ` Peter T. Breuer
2005-01-10  9:05                                   ` Guy
2005-01-10  9:38                                     ` Peter T. Breuer
2005-01-10 12:31                                   ` Peter T. Breuer
2005-01-10 13:19                                     ` Peter T. Breuer
2005-01-10 18:37                                       ` Peter T. Breuer
2005-01-11 11:34                                         ` Peter T. Breuer
2005-01-08 23:09               ` Guy
2005-01-09  0:56                 ` maarten
2005-01-13  2:05                 ` Neil Brown
2005-01-13  4:55                   ` Guy
2005-01-13  9:27                   ` Peter T. Breuer
2005-01-13 15:53                     ` Guy
2005-01-13 17:16                       ` Peter T. Breuer
2005-01-13 20:40                         ` Guy
2005-01-13 23:32                           ` Peter T. Breuer
2005-01-14  2:43                             ` Guy
2005-01-08 16:49       ` maarten
2005-01-08 19:01         ` maarten
2005-01-10 16:34           ` maarten
2005-01-10 16:36             ` Gordon Henderson
2005-01-10 17:10               ` maarten
2005-01-16 16:19                 ` 4 questions. Chieftec chassis case CA-01B, resync times, selecting ide driver module loading, raid5 :2 drives on same ide channel Mitchell Laks
2005-01-16 17:53                   ` Gordon Henderson
2005-01-16 18:22                   ` Maarten
2005-01-16 19:39                   ` Guy
2005-01-16 20:55                     ` Maarten
2005-01-16 21:58                       ` Guy
2005-01-10 17:13             ` Spares and partitioning huge disks Guy
2005-01-10 17:35               ` hard disk re-locates bad block on read Guy
2005-01-11 14:34                 ` Tom Coughlan
2005-01-11 22:43                   ` Guy
2005-01-12 13:51                     ` Tom Coughlan
2005-01-10 18:24               ` Spares and partitioning huge disks maarten
2005-01-10 20:09                 ` Guy
2005-01-10 21:21                   ` maarten
2005-01-11  1:04                   ` maarten
2005-01-10 18:40               ` maarten
2005-01-10 19:41                 ` Guy
2005-01-12 11:41               ` RAID-6 Gordon Henderson
2005-01-13  2:11                 ` RAID-6 Neil Brown
2005-01-15 16:12                   ` RAID-6 Gordon Henderson
2005-01-17  8:04                     ` RAID-6 Turbo Fredriksson
2005-01-11 10:09             ` Spares and partitioning huge disks KELEMEN Peter
2005-01-09 19:33         ` Frank van Maarseveen
2005-01-09 21:26           ` maarten
2005-01-09 22:29             ` Frank van Maarseveen
2005-01-09 23:16               ` maarten
2005-01-10  8:15                 ` Frank van Maarseveen
2005-01-14 17:29                   ` Dieter Stueken
2005-01-14 17:46                     ` maarten
2005-01-14 19:14                       ` Derek Piper
2005-01-15  0:13                     ` Michael Tokarev
2005-01-15  9:34                       ` Peter T. Breuer
2005-01-15  9:54                         ` Mikael Abrahamsson
2005-01-15 10:31                           ` Brad Campbell [this message]
2005-01-15 11:10                             ` Mikael Abrahamsson
2005-01-15 10:33                           ` Peter T. Breuer
2005-01-15 11:07                             ` Mikael Abrahamsson
2005-01-09 23:20             ` Guy
2005-01-10  7:42               ` Gordon Henderson
2005-01-10  9:03                 ` Guy
2005-01-10 12:21                   ` Stats... [RE: Spares and partitioning huge disks] Gordon Henderson
2005-01-10  0:42             ` Spares and partitioning huge disks Guy
  -- strict thread matches above, loose matches on Subject: below --
2005-01-13  9:53 Bene Martin
2005-01-13 10:11 ` Peter T. Breuer

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