On Tue, Jun 25, 2013 at 01:39:11PM +0200, Kevin Wolf wrote: > > Can you please review for the gluster, rbd, sheepdog and ssh driver > whether it's safe to assume that the image reads back as zeros after > bdrv_create?
Gluster supports both file and block backends. While the above is true for file backend (which uses ftruncate), the same is not true for block backend (which uses lvcreate & lvresize). So overall it is not safe to assume that an image on GlusterFS volume reads back as zeroes after create. Regards, Bharata.