[Qemu-devel] Re: [PATCH 0/3 v2] allow online resizing of block devices

[Christoph Hellwig]

On Wed, Jan 19, 2011 at 06:26:49PM +0100, Juan Quintela wrote:
> Does this handle the change of the rtc data?  I can't see how/where.
> (Not that I know if it is important at all until reboot).

It doesn't.

> cmos_init_hb() uses the size to guess the right geometry of the drives,
> if we change the size of the drive, should we change that one?

I don't think changing geometry on a live system is a good idea.  But
as mentioned at least for Linux guests there's no way to find out about
the new size of an IDE disk right now.  Although I might send a patch
to allow a manual rescan, similar to SCSI.