Sorry to trouble you all.
I found the right way: I should use the -o option when I create cow image files.
Then hexdump can give full info.
~> touch testcow # maked up backing_file ahead to get non-0s
.mtime
~> qemu-img create -f cow -o backing_file=testcow,size=1M dummy
Formatti
Am 03.09.2014 um 12:59 hat Stefan Hajnoczi geschrieben:
> On Wed, Sep 03, 2014 at 01:27:00PM +0800, shhuiw wrote:
> > I'm reading the source code of cow.c:
> > https://github.com/qemu/qemu/blob/master/block/cow.c
> > and try to understand the format better.
>
> The 'cow' format is an old format t
On Wed, Sep 03, 2014 at 01:27:00PM +0800, shhuiw wrote:
> I'm reading the source code of cow.c:
> https://github.com/qemu/qemu/blob/master/block/cow.c
> and try to understand the format better.
The 'cow' format is an old format that is rarely used. It's not a good
example.
qcow2 is actively dev
