On Fri, Mar 27, 2015 at 03:35:02PM +, Richard W.M. Jones wrote:
On Fri, Mar 27, 2015 at 03:21:25PM +, Stefan Hajnoczi wrote:
On Fri, Mar 27, 2015 at 12:31:41PM +, Richard W.M. Jones wrote:
On Fri, Mar 27, 2015 at 12:15:34PM +, Stefan Hajnoczi wrote:
On Thu, Mar 26, 2015
On Fri, Mar 27, 2015 at 12:15:34PM +, Stefan Hajnoczi wrote:
On Thu, Mar 26, 2015 at 12:02:27AM +0100, Kashyap Chamarthy wrote:
So, something like?
. . .
{ 'execute': 'drive-backup', 'arguments':
{ 'device': 'drive-virtio-disk1', 'sync': 'full', 'target':
On Thu, Mar 26, 2015 at 12:02:27AM +0100, Kashyap Chamarthy wrote:
[Added Stefan Hajnoczi, who wrote the 'drive-backup' QMP command and
Eric Blake.]
On Wed, Mar 25, 2015 at 07:41:23PM +, Richard W.M. Jones wrote:
On Wed, Mar 25, 2015 at 07:38:03PM +0100, Kashyap Chamarthy wrote:
On
On Fri, Mar 27, 2015 at 10:37:44AM -0600, Eric Blake wrote:
On 03/27/2015 09:35 AM, Richard W.M. Jones wrote:
But libguestfs doesn't want to do a backup, nor get a copy of the
whole disk, it just wants to access a scattering of blocks (maybe a
few hundred) but at a single point in time, in
On Fri, Mar 27, 2015 at 12:31:41PM +, Richard W.M. Jones wrote:
On Fri, Mar 27, 2015 at 12:15:34PM +, Stefan Hajnoczi wrote:
On Thu, Mar 26, 2015 at 12:02:27AM +0100, Kashyap Chamarthy wrote:
So, something like?
. . .
{ 'execute': 'drive-backup', 'arguments':
On 03/27/2015 09:35 AM, Richard W.M. Jones wrote:
What I care about is connecting libguestfs to qemu and reading a
snapshot at some point in time, even though the guest is still writing
away to its disks. Is this possible with drive-backup (or otherwise)?
Yes, that is what drive-backup
On Fri, Mar 27, 2015 at 03:21:25PM +, Stefan Hajnoczi wrote:
On Fri, Mar 27, 2015 at 12:31:41PM +, Richard W.M. Jones wrote:
On Fri, Mar 27, 2015 at 12:15:34PM +, Stefan Hajnoczi wrote:
On Thu, Mar 26, 2015 at 12:02:27AM +0100, Kashyap Chamarthy wrote:
So, something like?
On 03/27/2015 11:21 AM, Richard W.M. Jones wrote:
AIUI:
We'd issue a drive-backup monitor command with an nbd:... target.
The custom NBD server receives a stream of blocks (as writes).
On the other side of this, libguestfs is also talking to the custom
NBD server. Libguestfs (which
On Fri, Mar 27, 2015 at 01:27:39PM -0600, Eric Blake wrote:
Is NBD bi-directional, in that the target can receive write requests at
the same time it is sending read requests?
It's unidirectional. It's a very simple protocol - you can't even
answer requests out of order:
On Wed, Mar 25, 2015 at 07:38:03PM +0100, Kashyap Chamarthy wrote:
On Mon, Mar 23, 2015 at 10:43:30PM +, Richard W.M. Jones wrote:
[. . .]
This makes a copy of the whole disk image. It's also not a consistent
(point in time) copy.
Oh I see that you're copying the _snapshot_
[Added Stefan Hajnoczi, who wrote the 'drive-backup' QMP command and
Eric Blake.]
On Wed, Mar 25, 2015 at 07:41:23PM +, Richard W.M. Jones wrote:
On Wed, Mar 25, 2015 at 07:38:03PM +0100, Kashyap Chamarthy wrote:
On Mon, Mar 23, 2015 at 10:43:30PM +, Richard W.M. Jones wrote:
[. . .]
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