Date: Fri, 29 Jul 2016 15:57:55 +0100 From: Karl Pielorz <kpielorz_lst@tdx.co.uk> To: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= <roger.pau@citrix.com>, Wei Liu <wei.liu2@citrix.com> Cc: "Hoyer-Reuther, Christian" <Christian.Hoyer-Reuther@cac-chem.de>, freebsd-xen@freebsd.org Subject: Re: 'Live' Migrate messes up NTP on FreeBSD domU - any suggestions? Message-ID: <A4EB016C3483C3191D691E10@[10.12.30.106]> In-Reply-To: <20160729082905.46js7o3zp6iwuibd@mac> References: <41E487BC91654544B2B8F31096F2D9D4D1514D1D8E@ex1> <20160714103016.4hgfzsjgkkgtkkgg@mac> <41E487BC91654544B2B8F31096F2D9D4D1514D1E88@ex1> <20160720093111.mpmp27wol7j3ge3d@mac> <41E487BC91654544B2B8F31096F2D9D4D1516490E9@ex1> <20160722115542.dopzb63dgkilqall@mac> <FA258C50EA60D4DE44D9289C@[10.12.30.106]> <20160725144314.yhggviqhsqzgux2w@mac> <20160725153714.GW27082@citrix.com> <20160729082905.46js7o3zp6iwuibd@mac>
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--On 29 July 2016 10:29 +0200 Roger Pau Monn=C3=A9 <roger.pau@citrix.com> =
wrote:
> Hello Karl and Christian, I have the following patches that solve all the
> issues I've seen with live migration, with those I've been able to
> migrate a VM > 100 times without seeing any issues. Could you give them
> a try?
>
> BTW, I haven't been able to reproduce Karl's crash ("called with 0
> available queues"), but I've added a condition that should prevent it
> from triggering anyway. Patches are here:
>
> https://reviews.freebsd.org/D7349
> https://reviews.freebsd.org/D7362
> https://reviews.freebsd.org/D7363
>
> It doesn't really matter in which order you apply them as long as both 3
> are applied. Ideally I would like to commit them on Monday, so that I
> can MFC them to stable/11 before the releng/11 branch, could you please
> provide some feedback before then?
Patched, and have been running migrations back & forth between two pool=20
members all day (must have done ~100), time has stayed in sync - and I've=20
not experienced any panics.
This is on the same VM as before - I've also tried leaving more heavy=20
network processes running in the background, and still seems Ok.
Regards,
-Karl
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