From mboxrd@z Thu Jan  1 00:00:00 1970
From: Olaf Hering <olaf@aepfle.de>
Subject: Re: migration regression in xen-4.11 and qemu-2.11 and
 qcow2
Date: Wed, 9 May 2018 14:23:16 +0200
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Am Tue, 8 May 2018 18:40:26 +0200
schrieb Olaf Hering <olaf@aepfle.de>:

> It looks like the IDE unplug is not permanent.

Stefano,

Jochen pointed me to commit 512b109ec962 ("xen: unplug the emulated devices=
 at resume time"), which I think is wrong. The kernel will most likely not =
be able to switch from a PV backed device to an emulated device. Not sure w=
hat issue could have been addressed by that commit. What should have been d=
one instead is to transfer the unplug state from one qemu to the other. Ple=
ase advice how to do that. Right now, with xen-4.10, all xenlinux based HVM=
 domUs can not be migrated anymore. With the upcoming xen-4.11 the migrated=
 domU will need to be killed.

Olaf

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