From: "Richard W.M. Jones" <rjones@redhat.com>
To: "Daniel P. Berrange" <berrange@redhat.com>
Cc: 吴兴博 <wuxb45@gmail.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] disk image: self-organized format or raw file
Date: Tue, 12 Aug 2014 19:52:08 +0100 [thread overview]
Message-ID: <20140812185207.GH14001@redhat.com> (raw)
In-Reply-To: <20140812184630.GP8471@redhat.com>
On Tue, Aug 12, 2014 at 07:46:30PM +0100, Daniel P. Berrange wrote:
> Taking the compression feature - arguably the biggest benefit of that
> is when you distribute disk images. eg if someone provides a root disk
> image on a web server, using compression in qcow2 can dramatically
> lower the download size, while still allowing QEMU to directly run
> from that qcow2 file. Sure you could wrap your disk images in gzip
> and then convert to your local filesystem at time of use but this
> introduces multiple extra steps.
It would be nice if qemu could handle xz-compressed files
transparently, since (when prepared correctly) these files are
seekable.
I have written code to do this here:
https://github.com/libguestfs/nbdkit/tree/master/plugins/xz
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
Read my programming and virtualization blog: http://rwmj.wordpress.com
libguestfs lets you edit virtual machines. Supports shell scripting,
bindings from many languages. http://libguestfs.org
next prev parent reply other threads:[~2014-08-12 18:52 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-11 23:38 [Qemu-devel] disk image: self-organized format or raw file 吴兴博
2014-08-12 0:52 ` Fam Zheng
2014-08-12 10:46 ` 吴兴博
2014-08-12 11:19 ` Fam Zheng
[not found] ` <CABPa+v1a7meoEtjLkwygjuZEABTqd8q3efGWJvAsAr-mLTQb-A@mail.gmail.com>
[not found] ` <20140812113916.GB2803@T430.redhat.com>
2014-08-12 12:03 ` 吴兴博
2014-08-12 12:21 ` Fam Zheng
2014-08-12 13:08 ` Kirill Batuzov
2014-08-12 13:23 ` Eric Blake
2014-08-12 13:45 ` 吴兴博
2014-08-12 14:07 ` Eric Blake
2014-08-12 14:14 ` 吴兴博
2014-08-12 15:30 ` Eric Blake
2014-08-12 16:22 ` Xingbo Wu
2014-08-13 1:29 ` Fam Zheng
2014-08-13 15:42 ` Kevin Wolf
2014-08-12 18:39 ` Richard W.M. Jones
2014-08-12 18:46 ` Daniel P. Berrange
2014-08-12 18:52 ` Richard W.M. Jones [this message]
2014-08-12 19:23 ` Xingbo Wu
2014-08-12 20:14 ` Richard W.M. Jones
2014-08-13 15:54 ` Kevin Wolf
2014-08-13 16:38 ` Xingbo Wu
2014-08-13 18:32 ` Kevin Wolf
2014-08-13 21:04 ` Xingbo Wu
2014-08-13 21:35 ` Eric Blake
2014-08-14 2:42 ` Xingbo Wu
2014-08-14 9:06 ` Kevin Wolf
2014-08-14 20:53 ` Xingbo Wu
2014-08-15 10:46 ` Kevin Wolf
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