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From: Olaf Hering <olaf@aepfle.de>
To: xen-devel@lists.xen.org,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: migration regression in xen-4.11 and qemu-2.11 and qcow2
Date: Wed, 9 May 2018 14:23:16 +0200	[thread overview]
Message-ID: <20180509142316.66171ffd.olaf@aepfle.de> (raw)
In-Reply-To: <20180508184026.4f0af76a.olaf@aepfle.de>


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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 what issue could have been addressed by that commit. What should have been done instead is to transfer the unplug state from one qemu to the other. Please 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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  reply	other threads:[~2018-05-09 12:23 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-07 15:19 migration regression in xen-4.11 and qemu-2.11 and qcow2 Olaf Hering
2018-05-08 11:31 ` Olaf Hering
2018-05-08 16:40   ` Olaf Hering
2018-05-09 12:23     ` Olaf Hering [this message]
2018-05-09 21:08       ` Stefano Stabellini
2018-05-09 21:13         ` Olaf Hering
2018-05-09 21:43           ` Stefano Stabellini
2018-05-10  6:04             ` Olaf Hering
2018-05-10 16:03               ` Stefano Stabellini
2018-05-16 13:13                 ` Olaf Hering
2018-05-10 10:40   ` Anthony PERARD
2018-05-14 14:15     ` Olaf Hering
2018-05-16 14:53     ` Olaf Hering
2018-05-17  6:30       ` Olaf Hering
2018-05-17  9:08         ` Olaf Hering
2018-05-17  8:31 ` Olaf Hering

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