On Mon, Nov 20, 2006 at 04:34:22PM -0600, Anthony Liguori wrote:
> Daniel P. Berrange wrote:
> >On Mon, Nov 20, 2006 at 04:34:25PM -0500, Graham, Simon wrote:
> >>Signed-off by: Simon Graham <Simon.Graham@xxxxxxxxxxx>
>
> >And even more importantly, once we get the error reporting patches
> >integrated
> >into libxc, having the xc_linux_save/restore calls made by XenD directly
> >would ensure we get reliable error handling for save/restore operations.
>
> It used to work that way. xc_linux_save/restore were factored out of
> Xend late in the 3.0 dev process. I believe the idea was that they
> should be executed with lower privileges (which is why they take file
> descriptors as command line arguments instead of just calling
> xc_interface_open() like you would expect).
>
> I believe it was Christian who was driving this. Perhaps he has a few
> more details?
Ok, looking back at the HG logs it appears # 5099
"Execute xc_linux_restore in a seperate process so that it can't
crash xend. Also handle errors passed from xc_linux_restore and
log info messages from xc_linux_restore."
and # 5121:
"Implement the parts of vm save which need interaction with xend
as part of xend, instead of using xfrd.
Execute xc_linux_save in a seperate process so that it can't
crash xend. Also handle errors passed from xc_linux_save.
are where these programs came into existance.
Regards,
Dan.
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