[Qemu-devel] Re: [PATCH v2] monitor: Really show snapshot information about all devices

[Luiz Capitulino]

On Thu, 17 Jun 2010 09:58:37 -0300
Miguel Di Ciurcio Filho <address@hidden> wrote:

> The 'info snapshots' monitor command does not show snapshot information from 
> all
> available block devices.
> 
> Usage example:
> $ qemu -hda disk1.qcow2 -hdb disk2.qcow2
> 
> (qemu) info snapshots
> Snapshot devices: ide0-hd0
> Snapshot list (from ide0-hd0):
> ID        TAG                 VM SIZE                DATE       VM CLOCK
> 1                                1.5M 2010-05-26 21:51:02   00:00:03.263
> 2                                1.5M 2010-05-26 21:51:09   00:00:08.844
> 3                                1.5M 2010-05-26 21:51:24   00:00:23.274
> 4                                1.5M 2010-05-26 21:53:17   00:00:03.595
> 
> In the above case, disk2.qcow2 has snapshot information, but it is not being
> shown. Only the first device is always shown.
> 
> This patch updates the do_info_snapshots() function do correctly show snapshot
> information about all available block devices.
> 
> New output:
> (qemu) info snapshots
> Snapshot list from ide0-hd0 (VM state image):
> ID        TAG                 VM SIZE                DATE       VM CLOCK
> 1                                1.5M 2010-05-26 21:51:02   00:00:03.263
> 2                                1.5M 2010-05-26 21:51:09   00:00:08.844
> 3                                1.5M 2010-05-26 21:51:24   00:00:23.274
> 4                                1.5M 2010-05-26 21:53:17   00:00:03.595
> 
> Snapshot list from ide0-hd1:
> ID        TAG                 VM SIZE                DATE       VM CLOCK
> 1                                   0 2010-05-26 21:51:02   00:00:03.263
> 2                                   0 2010-05-26 21:51:09   00:00:08.844
> 3                                   0 2010-05-26 21:51:24   00:00:23.274
> 4                                   0 2010-05-26 21:53:17   00:00:03.595

 I agree we need this info somewhere, but I'm wondering if this output won't
get users confused.

 Perhaps it would be perfect to have 'info snapshots -a', but the user Monitor
don't support passing options to info commands.

 Suggestions?