[vbox-dev] Network restoration after snapshot

[Klaus Espenlaub]

On 21.05.2012 21:07, Jaikumar G wrote:
> Hi Aleksey,
>
>
> On Mon, May 21, 2012 at 11:35 AM, Aleksey Ilyushin
> <aleksey.ilyushin at oracle.com <mailto:aleksey.ilyushin at oracle.com>> wrote:
>
>     Jaikumar,
>
>     This behavior is intentional. Machine's state may be saved in one
>     network environment, and restored in completely different one (VM on
>     laptop that brought home from office, for example). VirtualBox
>     forces the link down and back up after a timeout.
>
>
>      I understand the need to bring the machine networking down and up.
> Is the timeout configurable ? Seems like it slows down the restoration
> process if the restoring is happening on the same machine.

Please define what you mean by "slows down the restoration process" - 
your log clearly says that the VM was executing again after a bit more 
than a second, which is expected performance. The VM will re-establish 
its network connection, and so far the 5 second delay wasn't reported as 
an issue.

Anyway, it's a hardcoded delay which can't be changed by the user.

Klaus

>
> Thanks
>
>
>     Regards,
>     Aleksey
>
>     On May 21, 2012, at 9:52 PM, Jaikumar G wrote:
>
>      > Folks,
>      >    When trying to restore a snaphot (of a paused machine) the
>     network takes close to 5 secs to come back up.
>      >
>      > VBox Log snippet is below. I tried switching the adapter that I
>     was using but that I didn't help either.
>      >
>      > Any pointers ?
>      >
>      > 00:00:01.343 HGCM: restoring [VBoxSharedFolders]
>      > 00:00:01.343 HGCM: restoring [VBoxGuestControlSvc]
>      > 00:00:01.343 HGCM: restoring [VBoxGuestPropSvc]
>      > 00:00:01.343 HGCM: restoring [VBoxSharedClipboard]
>      > 00:00:01.354 Changing the VM state from 'LOADING' to 'SUSPENDED'.
>      > 00:00:01.354 Changing the VM state from 'SUSPENDED' to 'RESUMING'.
>      > 00:00:01.354 Changing the VM state from 'RESUMING' to 'RUNNING'.
>      > 00:00:01.362 Display::handleDisplayResize(): uScreenId = 0,
>     pvVRAM=00002abb5917a000 w=1024 h=768 bpp=16 cbLine=0x800, flags=0x1
>      > 00:00:01.612 VUSB: attached 'HidMouse' to port 1
>      > 00:00:06.364 PCNet#0: The link is back up again after the restore.
>      > 00:00:07.473 NAT: DHCP offered IP address 10.0.2.15
>      >
>      > Thanks
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>
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