On Mon, Jul 15, 2013 at 07:14:04PM +0100, Richard W.M. Jones wrote:
> On Mon, Jul 15, 2013 at 01:36:57PM -0400, Matthew Miller wrote:
> > Seekable xz/lzma compression instead of zlib/deflate.
>
> In qcow2, each [by default] 64K cluster is compressed independently.
... and I should say there's a 2
On Mon, Jul 15, 2013 at 01:36:57PM -0400, Matthew Miller wrote:
> On Mon, Jul 15, 2013 at 07:35:49PM +0200, Juerg Haefliger wrote:
> > > Or, bigger picture, maybe a future qcow2 format could support this
> > > natively?
> > Confused. Support what? Your comment above indicates that compressed
> > q
On Mon, Jul 15, 2013 at 07:35:49PM +0200, Juerg Haefliger wrote:
> > Or, bigger picture, maybe a future qcow2 format could support this natively?
> Confused. Support what? Your comment above indicates that compressed
> qcow2 images are seekable already.
Seekable xz/lzma compression instead of zlib
On Mon, Jul 15, 2013 at 6:04 PM, Matthew Miller
wrote:
> On Mon, Jul 15, 2013 at 01:21:27PM +0100, Richard W.M. Jones wrote:
>> > Is the compressed image still seekable? If yes, that constrains the
>> > window/block size and limits the gains from switching compressors.
>> Dan's answer covered one
On Mon, Jul 15, 2013 at 01:21:27PM +0100, Richard W.M. Jones wrote:
> > Is the compressed image still seekable? If yes, that constrains the
> > window/block size and limits the gains from switching compressors.
> Dan's answer covered one aspect of this: are qcow2 compressed
> images seekable, answ
On Mon, Jul 15, 2013 at 01:06:26PM +0200, Lukas Zapletal wrote:
> On Mon, Jul 15, 2013 at 12:22:22PM +0200, Jaroslav Reznik wrote:
> > downloadable cloud images (in qcow2 and raw.xz format) produced and
> > released
> I know that it is convenient to expose qcow2 images uncompressed so
> users are
