Re: [Qemu-devel] vm disk blockio and fileio

2014-04-23 Thread Stefan Hajnoczi
On Mon, Mar 31, 2014 at 10:09:13PM +0800, longguang.yue wrote: > from the aspect of qemu, there are file and block disk type, > what is the final difference between the two types ? > if its type is block and source is volume or physical disk, who finally > read/write the disk? > i thought block i

[Qemu-devel] vm disk blockio and fileio

2014-03-31 Thread longguang.yue
hi,all from the aspect of qemu, there are file and block disk type, what is the final difference between the two types ? if its type is block and source is volume or physical disk, who finally read/write the disk? i thought block is raw format, so raw driver will do the actual r/w, am i right? if