From: Paolo Bonzini <bonzini@gnu.org>
To: Alexander Graf <agraf@suse.de>
Cc: Kevin Wolf <kwolf@redhat.com>,
qemu-devel@nongnu.org, Christoph Hellwig <hch@lst.de>
Subject: [Qemu-devel] Re: [PATCH] Add tar container format
Date: Mon, 17 Aug 2009 14:05:26 +0200 [thread overview]
Message-ID: <4A894786.1040306@gnu.org> (raw)
In-Reply-To: <1F7A05E1-0B0B-4C68-B07B-2F36B9BECF81@suse.de>
> Bzip2 is supposed to be chunkable, but I haven't found anyone who did
> this yet and my knowledge in compression is pretty small.
Bzip2 proceeds in chunks of approximately 100-900 KB size. However, the
size is taken after an initial RLE compression pass. So bzip2 is only
chunkable if you remove the initial RLE compression---this means hacking
the bzip2 executable (see ADD_CHAR_TO_BLOCK and add_pair_to_block) in
bzip2's bzlib.c.
Using GIO may have been a good idea a few years ago, but it seems a bit
overengineered given that the block layer of qemu works well and it is
pretty complex.
Paolo
prev parent reply other threads:[~2009-08-17 12:05 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-05 15:33 [Qemu-devel] [PATCH] Add tar container format Alexander Graf
2009-08-13 22:57 ` Anthony Liguori
2009-08-13 23:08 ` Alexander Graf
2009-08-13 23:13 ` Anthony Liguori
2009-08-13 23:15 ` Anthony Liguori
2009-08-15 20:36 ` Christoph Hellwig
2009-08-17 12:05 ` Paolo Bonzini [this message]
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