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Re: [Xen-devel] DomU clock jumps forward then freezes after Dom0 reboot

To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] DomU clock jumps forward then freezes after Dom0 reboot
From: Cédric Schieli <cschieli@xxxxxxxxx>
Date: Sun, 24 Oct 2010 14:31:52 +0200
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I can confirm my problem reported here
is the same.
DomU kernels affected by the migration hang are also affected by the
save/restore hang. Reverting "x86, paravirt: Add a global
synchronization point for pvclock" also fix the save/restore hang.
After doing save/reboot/restore (which led to a hang), migrating it to
a host with a longer uptime will unblock the domain, but the wallclock
will be several hours forward. Migrating back will block again.

Cédric Schieli

2010/10/19 Olivier Hanesse <olivier.hanesse@xxxxxxxxx>:
> Hello,
> I think I got exactly the same bug.
> After a reboot, all my DomU are stuck during X min ,  where X was the
> "uptime" of the dom0 before reboot.
> Save/Restore without reboot works perfectly.
> I am running Debian Lenny with backports :
> ii  xen-hypervisor-4.0-amd64                    4.0.1-1
> The Xen Hypervisor on AMD64
> ii  linux-image-2.6.32-bpo.5-xen-amd64          2.6.32-23~bpo50+1
> Linux 2.6.32 for 64-bit PCs, Xen dom0 suppor
> Any ideas ?
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel

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