On Mon, Jul 15, 2013 at 01:55:18PM +0200, Florian Weimer wrote: > On 07/15/2013 01:47 PM, Daniel P. Berrange wrote: > >Updating to qcow2 to support xz (or some other algo) as a built-in > >compression choice would likely give better results. > > Is the compressed image still seekable? If yes, that constrains the > window/block size and limits the gains from switching compressors. Yes, qcow2 compression is applied to discrete clusters in the image, whose size defaults to 65536 bytes (changable to a maximum of 2 MB at image creation time) Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :| -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
