From: Peter Lieven <pl@kamp.de>
To: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, qemu-stable@nongnu.org
Subject: Re: [Qemu-devel] Broken live Migration in Qemu 2.5.1.1?
Date: Mon, 6 Jun 2016 17:51:28 +0200 [thread overview]
Message-ID: <57559C00.6010009@kamp.de> (raw)
In-Reply-To: <57557B7B.2070301@kamp.de>
Am 06.06.2016 um 15:32 schrieb Peter Lieven:
> Hi,
>
> during internal testing of Qemu 2.5.1.1 I found a vServer running Ubuntu 12.04 (kernel 3.13) and a slave SQL server to
> stop replicating from the master. This seems to be reproducible. It is possible to continue replication when issuing a slave stop / slave start.
> There is no error visible on the vServer.
>
> Has anyone a fix in mind that could be related to such an issue?
>
> Host kernel in Linux 4.4, Guest kernel 3.13. Guest driver is virtio-blk via iSCSI. Emulated vCPU is Westmere.
After a lot of testing I found out that obviously thats no block driver problem, but a regression in the virtio-net or the network stack.
qemu_announce_self() is generating packets for all NICs, but it seems they are no longer emitted. This worked at least in qemu-2.2.0 with
the same guest kernel and host kernel.
I will continue debugging tomorrow why this happens.
Peter
next prev parent reply other threads:[~2016-06-06 15:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-06 13:32 [Qemu-devel] Broken live Migration in Qemu 2.5.1.1? Peter Lieven
2016-06-06 15:51 ` Peter Lieven [this message]
2016-06-06 16:13 ` [Qemu-devel] [Qemu-stable] " Stefan Priebe - Profihost AG
2016-06-07 7:11 ` Peter Lieven
2016-06-07 7:38 ` Peter Lieven
2016-06-07 8:33 ` Stefan Priebe - Profihost AG
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