Re: [Xen-devel] Xen 4.2 TODO / Release Plan

["Ren, Yongjie" <yongjie.ren@xxxxxxxxx>]

> -----Original Message-----
> From: Ian Campbell [mailto:Ian.Campbell@xxxxxxxxxx]
> Sent: Tuesday, August 21, 2012 11:27 PM
> To: Ren, Yongjie
> Cc: xen-devel
> Subject: Re: [Xen-devel] Xen 4.2 TODO / Release Plan
> 
> Users list to BCC.
> 
> On Tue, 2012-08-21 at 16:14 +0100, Ren, Yongjie wrote:
> > > -----Original Message-----
> > > From: xen-devel-bounces@xxxxxxxxxxxxx
> > > [mailto:xen-devel-bounces@xxxxxxxxxxxxx] On Behalf Of Ian Campbell
> > > Sent: Monday, August 20, 2012 5:17 PM
> > > To: xen-devel; xen-users
> > > Subject: [Xen-devel] Xen 4.2 TODO / Release Plan
> > >
> > >     * [BUG] long stop during the guest boot process with qcow
> image,
> > >       reported by Intel:
> > > http://bugzilla.xen.org/bugzilla/show_bug.cgi?id=1821
> > >
> > After reverting the "O_DIRECT for IDE" patch in qemu-xen tree, it works
> as fine as that before the bug.
> > But it still have some stop time (about 8~10s) after loading the Grub for a
> RHEL6.x guest.
> > I found even an old CS #23124 (about 1 year ago) also has the same
> phenomenon.
> 
> 23124 here is e3d4c34b14a3112481b5e86ff2406cd1bb5e1548 which is
> some
> sort of tools build fix. What is the long hash of the changeset you are
> referring to?
> 
Yes, it's "changeset:  23124:e3d4c34b14a3".
That changeset is picked out randomly just to confirm the stop time (8~10s) 
should already exist for a long time.

> > Currently, RHEL6.2 or RHEL6.3 guest can bootup in 30~40s (for either
> RAW or QCOW2 image).
> > And, RHEL5.5 guest (which has no stop time issue) can bootup in 50~60s.
> >
> > I also commented in the bugzilla. You can also have a look for more
> details.
> >
> > Will you want still track or fix this old issue ?  If not, I want to marked 
> > it
> as "fixed and verified".
> 
> If you think the issue is fixed then I will mark it done on the todo
> list.
> 
I think yes. The regression for long stop time (about 50s) in bootup for qcow2 
image has already been fixed.
Now, 30s for a guest booting up is acceptable from my viewpoint.
If the 8~10 stop time really matters, we can setup another thread to discuss it.
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