Re: [Xen-devel] migration regression in xen-4.11 and qemu-2.11 and qcow2

[Olaf Hering <olaf@xxxxxxxxx>]

Am Wed, 16 May 2018 16:53:28 +0200
schrieb Olaf Hering <olaf@xxxxxxxxx>:

> Am Thu, 10 May 2018 11:40:18 +0100
> schrieb Anthony PERARD <anthony.perard@xxxxxxxxxx>:
> > I did fix the bug in QEMU 2.11 (5d6c599fe1d69a1bf8c5c4d3c58be2b31cd625ad)
> > so Xen 4.11 does include it it the qemu-xen tree.  
> Is this supposed to be called also for PV? In my testing 
> qmp_xen_save_devices_state shows up only on HVM.

I think the issue fixed by 5d6c599fe1d69a1bf8c5c4d3c58be2b31cd625ad is not 
specific to HVM. It seems domain_suspend_common_guest_suspended would call that 
changed function only for HVM. It seems the logic is wrong. It is not about the 
device model, but about that fact that 'disk==qcow2' requires qemu-upstream.
We see failures also with PV and qcow2, but for some reason not with every 
domU. localhost migration on the other hand does fail with every PV domU.

Olaf

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