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Re: [Qemu-devel] disk image: self-organized format or raw file
From: |
Richard W.M. Jones |
Subject: |
Re: [Qemu-devel] disk image: self-organized format or raw file |
Date: |
Tue, 12 Aug 2014 19:52:08 +0100 |
User-agent: |
Mutt/1.5.20 (2009-12-10) |
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
- Re: [Qemu-devel] disk image: self-organized format or raw file, (continued)
- Re: [Qemu-devel] disk image: self-organized format or raw file, Eric Blake, 2014/08/12
- Re: [Qemu-devel] disk image: self-organized format or raw file, 吴兴博, 2014/08/12
- Re: [Qemu-devel] disk image: self-organized format or raw file, Eric Blake, 2014/08/12
- Re: [Qemu-devel] disk image: self-organized format or raw file, 吴兴博, 2014/08/12
- Re: [Qemu-devel] disk image: self-organized format or raw file, Eric Blake, 2014/08/12
- Re: [Qemu-devel] disk image: self-organized format or raw file, Xingbo Wu, 2014/08/12
- Re: [Qemu-devel] disk image: self-organized format or raw file, Fam Zheng, 2014/08/12
- Re: [Qemu-devel] disk image: self-organized format or raw file, Kevin Wolf, 2014/08/13
- Re: [Qemu-devel] disk image: self-organized format or raw file, Richard W.M. Jones, 2014/08/12
Re: [Qemu-devel] disk image: self-organized format or raw file, Daniel P. Berrange, 2014/08/12
- Re: [Qemu-devel] disk image: self-organized format or raw file,
Richard W.M. Jones <=
Re: [Qemu-devel] disk image: self-organized format or raw file, Kevin Wolf, 2014/08/13
- Re: [Qemu-devel] disk image: self-organized format or raw file, Xingbo Wu, 2014/08/13
- Re: [Qemu-devel] disk image: self-organized format or raw file, Kevin Wolf, 2014/08/13
- Re: [Qemu-devel] disk image: self-organized format or raw file, Xingbo Wu, 2014/08/13
- Re: [Qemu-devel] disk image: self-organized format or raw file, Eric Blake, 2014/08/13
- Re: [Qemu-devel] disk image: self-organized format or raw file, Xingbo Wu, 2014/08/13
- Re: [Qemu-devel] disk image: self-organized format or raw file, Kevin Wolf, 2014/08/14
- Re: [Qemu-devel] disk image: self-organized format or raw file, Xingbo Wu, 2014/08/14