From: Emmanuel Florac <eflorac@intellique.com>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com, Kevin Richter <xfs@pzystorm.de>
Subject: Re: Problem with XFS on USB 2TB HD
Date: Mon, 20 Dec 2010 10:55:47 +0100 [thread overview]
Message-ID: <20101220105547.4f9e7218@galadriel.home> (raw)
In-Reply-To: <20101220045126.GK5193@dastard>
Le Mon, 20 Dec 2010 15:51:26 +1100 vous écriviez:
> <shrug>
>
> Who knows how the encryption algorithm (sha256) is encrypting
> blocks.
According to Wikipedia, the block size is 512.
> FWIW, encryption makes any sort of corruption below the encrypted
> layer much, much worse as it turns things like single bit media
> errors into undecipherable, unrecoverable blocks of noise. No
> filesystem can recover from such corruption of an encrypted device.
> Hence if you had the same problem on ex3, ext4, JFS, etc you will
> end up with the same mess (or worse).
That's why I have an unencrypted local backup and an encrypted remote
one :)
--
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next prev parent reply other threads:[~2010-12-20 9:54 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-18 11:26 Problem with XFS on USB 2TB HD Kevin Richter
2010-12-19 2:04 ` Kevin Richter
2010-12-19 2:37 ` Stan Hoeppner
2010-12-19 14:57 ` Emmanuel Florac
2010-12-19 17:30 ` Eric Sandeen
2010-12-20 0:10 ` Dave Chinner
2010-12-20 2:56 ` Kevin Richter
2010-12-20 4:51 ` Dave Chinner
2010-12-20 9:55 ` Emmanuel Florac [this message]
2011-01-12 23:37 ` Kevin Richter
2011-01-13 13:15 ` Extreme fragmentation when backing up via NFS Phil Karn
2011-01-14 4:51 ` Dave Chinner
2011-01-13 21:52 ` Problem with XFS on USB 2TB HD Geoffrey Wehrman
2010-12-20 8:59 ` Michael Monnerie
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