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From: Kaspar Schleiser <kaspar@schleiser.de>
To: linux-btrfs@vger.kernel.org
Subject: Re: kernel 3.3.4 damages filesystem (?)
Date: Wed, 09 May 2012 16:46:42 +0200	[thread overview]
Message-ID: <4FAA8352.4020304@schleiser.de> (raw)
In-Reply-To: <20120509025646.2894f7ea@natsu>

Hi,

On 05/08/2012 10:56 PM, Roman Mamedov wrote:
> Regarding btrfs, AFAIK even "btrfs -d single" suggested above works not "per
> file", but per allocation extent, so in case of one disk failure you will lose
> random *parts* (extents) of random files, which in effect could mean no file
> in your whole file system will remain undamaged.
Maybe we should evaluate the possiblility of such a "one file gets on 
one disk" feature.

Helmut Hullen has the use case: Many disks, totally non-critical but 
nice-to-have data. If one disk dies, some *files* should lost, not some 
*random parts of all files*.

This could be accomplished by some userspace-tool that moves stuff 
around, combined with "file pinning"-support, that lets the user make 
sure a specific file is on a specific disk.

Cheers
Kaspar




  reply	other threads:[~2012-05-09 14:46 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-05-07 10:46 kernel 3.3.4 damages filesystem (?) Helmut Hullen
2012-05-07 10:58 ` Fajar A. Nugraha
2012-05-07 12:06   ` Helmut Hullen
2012-05-07 10:59 ` Hugo Mills
2012-05-07 12:15   ` Helmut Hullen
2012-05-07 13:34   ` Helmut Hullen
2012-05-07 14:05     ` Hugo Mills
2012-05-07 16:36       ` Helmut Hullen
2012-05-07 17:13         ` Felix Blanke
2012-05-07 17:52           ` Helmut Hullen
2012-05-07 18:00             ` Hugo Mills
2012-05-07 18:25               ` Helmut Hullen
2012-05-07 18:44                 ` Hugo Mills
2012-05-09 13:04                   ` failed disk (was: kernel 3.3.4 damages filesystem (?)) Helmut Hullen
2012-05-09 13:19                     ` Hugo Mills
2012-05-09 14:25               ` Helmut Hullen
2012-05-09 14:37                 ` Hugo Mills
2012-05-09 15:14                   ` failed disk Helmut Hullen
2012-05-09 15:33                     ` Hugo Mills
2012-05-09 18:49                       ` Helmut Hullen
2012-05-09 16:13                   ` failed disk (was: kernel 3.3.4 damages filesystem (?)) Ilya Dryomov
2012-05-10  2:49                   ` failed disk Helmut Hullen
2012-05-07 19:30             ` kernel 3.3.4 damages filesystem (?) Daniel Lee
2012-05-07 20:21               ` Helmut Hullen
2012-05-07 20:51                 ` Daniel Lee
2012-05-07 21:17                   ` Helmut Hullen
2012-05-07 21:27                     ` cwillu
2012-05-07 22:07                 ` Martin Steigerwald
2012-05-08  7:39                   ` Helmut Hullen
2012-05-08  7:44                     ` Fajar A. Nugraha
2012-05-08 10:00                       ` Helmut Hullen
2012-05-08 10:41                         ` Clemens Eisserer
2012-05-08 13:13                           ` Helmut Hullen
2012-05-08 13:44                             ` Felix Blanke
2012-05-08 13:52                               ` Hugo Mills
2012-05-08 16:53                               ` Helmut Hullen
2012-05-08 17:24                                 ` Felix Blanke
2012-05-08 18:29                                   ` Helmut Hullen
2012-05-08 18:41                                     ` Felix Blanke
2012-05-08 19:12                                       ` David Sterba
2012-05-08 19:34                                       ` Helmut Hullen
2012-05-08 20:02                                         ` Hugo Mills
2012-05-08 20:19                                           ` Helmut Hullen
2012-05-08 20:56                                             ` Roman Mamedov
2012-05-09 14:46                                               ` Kaspar Schleiser [this message]
2012-05-10 10:40                                                 ` Martin Steigerwald
2012-05-10 11:55                                                   ` feature request (was: kernel 3.3.4 damages filesystem (?)) Helmut Hullen
2012-05-10 19:43                                                   ` kernel 3.3.4 damages filesystem (?) Hubert Kario
2012-05-10 20:15                                                     ` Hugo Mills
2012-05-10 20:23                                                       ` Hubert Kario
2012-05-08 21:42                         ` Hubert Kario
2012-05-07 12:53 ` Liu Bo
2012-05-09 17:32 ` Duncan
2012-05-09 18:06   ` Atila

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