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Date:      Thu, 8 Dec 2016 10:33:37 +0100
From:      "Hoyer-Reuther, Christian" <Christian.Hoyer-Reuther@cac-chem.de>
To:        "freebsd-xen@freebsd.org" <freebsd-xen@freebsd.org>, "owner-freebsd-xen@freebsd.org" <owner-freebsd-xen@freebsd.org>
Subject:   Re: 11-RELEASE and live migration
Message-ID:  <41E487BC91654544B2B8F31096F2D9D4D1B060A925@ex1>
In-Reply-To: <003501d250af$032dd580$09898080$@ezwind.net>
References:  <001f01d250a6$05ca4160$115ec420$@ezwind.net> <a8486e84c86c73ae1a7d68a06d969671@ultra-secure.de> <003501d250af$032dd580$09898080$@ezwind.net>

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I did some tests and I see the problem too.

XenServer 6.5 SP1 with almost all patches (3 hosts in pool), FreeBSD 11.0-R=
ELEASE-p2, xe-guest-utilities-6.2.0_2 installed via pkg.

First migration from host 3 to host 1 is ok.

Some seconds later I start a new migration from host 1 to host 2 and when m=
igration finishes (as seen in XenCenter) then the VM switches to the VGABio=
s screen ("Plex86/Bochs VGABios (PCI) current-cvs 01 Sep 2016 ... cirrus-co=
mpatible VGA is detected"). The VM seem to hang and does not respond. In Xe=
nCenter I see that all the CPU's of the VM go up to 100 percent.

Then after 17 minutes the VGABios screen disappears and I see the console, =
the CPU usage as seen in XenCenter goes down. I logged in as root before I =
started the first migration and root is still logged in. So it was a hang a=
nd not a reboot.

20 minutes later I start a new migration from host 2 to host 3 and the prob=
lem occurs again.

This problem does not exist with 10.3-RELEASE on the same hosts.

> -----Original Message-----
> From: owner-freebsd-xen@freebsd.org [mailto:owner-freebsd-xen@freebsd.org=
]
> On Behalf Of Jay West
> Sent: Wednesday, December 07, 2016 6:26 PM
> To: rainer@ultra-secure.de
> Cc: freebsd-xen@freebsd.org; owner-freebsd-xen@freebsd.org
> Subject: RE: 11-RELEASE and live migration
>=20
> Rainer wrote...
> ------
> We've also seen this (unexplainable reboots, I think they happen after
> migrations).
>=20
> But it never hangs. It seems to actually "reboot", as if somebody had
> pressed CTRL-ALT-DEL or typed "reboot".
> ---------
>=20
> I should also point out... on the same pair of hosts, there are a few
> windows server 2012 r2 and windows 7 pro VM's. None of them have problems
> migrating back and forth. It's only the F11 ones that do.
>=20
> First migration goes fine, and vm can be logged in to and excercised. But
> then migrate it back... and it goes to the fake bios post screen (I
> forget... cirrus bios or something).. and then just hangs without loading=
 OS
> so there is no message from the OS.
>=20
> Strange... I have older versions of freebsd on an older version of
> xenserver... and the above definitely is not a problem there.
>=20
> Perhaps it's something amiss with my new setup, but the windows vm's migr=
ate
> fine....



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