From: Milan Broz <gmazyland@gmail.com>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] Reconsidering default options for cryptsetup-reencrypt
Date: Sat, 24 Nov 2012 21:59:14 +0100 [thread overview]
Message-ID: <50B13522.1000003@gmail.com> (raw)
In-Reply-To: <2fffc2e10dfbf0a7ccaaf2ef43213a4e.squirrel@ssl.verfeiert.org>
On 11/24/2012 06:01 PM, Sven Eschenberg wrote:
> BTW, what exactly are you referring to, when you talk about 64 MB blocksize?
Here cryptsetup-reencrypt is in principle simple program, it reads a "block"
and write it back to device with new encryption parameters (and optionally with
some different offset). So block here is meant as an unit which is handled in one
reencryption step.
(But the real atomic unit of encryption is still 512B block of course.)
There is no requirement this block to be aligned to underlying hw alignment
(but if it is misaligned, the same performance degradation problems apply of course).
Milan
next prev parent reply other threads:[~2012-11-24 20:59 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-23 4:12 [dm-crypt] Reconsidering default options for cryptsetup-reencrypt Karol Babioch
2012-11-23 6:07 ` Arno Wagner
2012-11-23 9:00 ` Milan Broz
2012-11-23 9:27 ` Arno Wagner
2012-11-23 9:42 ` Milan Broz
2012-11-24 17:01 ` Sven Eschenberg
2012-11-24 20:59 ` Milan Broz [this message]
2012-12-03 0:27 ` DarKRaveR
2012-11-23 8:49 ` Milan Broz
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