On Mon, Jan 9, 2012 at 10:58 AM, Kevin Wolf wrote:
> Am 04.01.2012 23:40, schrieb Stefan Hajnoczi:
>> Kevin: I think we need something like qcow2_snapshot_load_tmp() but it
>> returns a full new BlockDriverState. The hard thing is that duping a
>> read-only snapshot qcow2 state leads to sharing a
Am 04.01.2012 23:40, schrieb Stefan Hajnoczi:
> The qcow2 implementation never accesses snapshots directly. Instead
> there's the concept of the current L1 table, which means there is a
> single global state of the disk. Snapshots are immutable and are
> never accessed directly, only copied into
On 01/04/2012 11:40 PM, Stefan Hajnoczi wrote:
What you want sounds almost like an NBD server that can be
launched/stopped while qemu is already running a VM. This could be a
QEMU monitor command like:
nbd-start tcp::1234 virtio-disk0 --snapshot 20120104
It would be possible to stop the server
On Wed, Jan 4, 2012 at 6:03 PM, Eric Blake wrote:
> On 01/04/2012 10:47 AM, Marcelo Tosatti wrote:
+/*
+ * Given an image chain: [BASE] -> [INTER1] -> [INTER2] -> [TOP]
+ *
>>>
>>> How hard would it be to go one step further, and provide a monitor
>>> command where qemu could dump t
On Wed, Jan 04, 2012 at 11:03:14AM -0700, Eric Blake wrote:
> On 01/04/2012 10:47 AM, Marcelo Tosatti wrote:
> >>> +/*
> >>> + * Given an image chain: [BASE] -> [INTER1] -> [INTER2] -> [TOP]
> >>> + *
> >>
> >> How hard would it be to go one step further, and provide a monitor
> >> command where qe
On 01/04/2012 10:47 AM, Marcelo Tosatti wrote:
>>> +/*
>>> + * Given an image chain: [BASE] -> [INTER1] -> [INTER2] -> [TOP]
>>> + *
>>
>> How hard would it be to go one step further, and provide a monitor
>> command where qemu could dump the state of BASE, INTER1, or INTER2
>> without removing it
On Wed, Jan 04, 2012 at 09:02:06AM -0700, Eric Blake wrote:
> On 01/04/2012 07:08 AM, Marcelo Tosatti wrote:
> > Add support for streaming data from an intermediate section of the
> > image chain (see patch and documentation for details).
> >
> > Signed-off-by: Marcelo Tosatti
> >
> > Index: st
On 01/04/2012 07:08 AM, Marcelo Tosatti wrote:
> Add support for streaming data from an intermediate section of the
> image chain (see patch and documentation for details).
>
> Signed-off-by: Marcelo Tosatti
>
> Index: stefanha/block.c
> =
Add support for streaming data from an intermediate section of the
image chain (see patch and documentation for details).
Signed-off-by: Marcelo Tosatti
Index: stefanha/block.c
===
--- stefanha.orig/block.c
+++ stefanha/block.c
@@
