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Date:      Tue, 08 Sep 2015 17:06:29 +0100
From:      Karl Pielorz <kpielorz_lst@tdx.co.uk>
To:        Adam McDougall <mcdouga9@egr.msu.edu>, freebsd-xen@freebsd.org
Subject:   Re: XenServer 6.5(SP1) - HVM 're0: watchdog timeout' errors...
Message-ID:  <762F895FF087C3BBB6DB94DA@[10.12.30.106]>
In-Reply-To: <55EDC55B.8000004@egr.msu.edu>
References:  <9CC4073DE17E3C8BD01EF7D3@[10.12.30.106]> <55EDA470.1000007@citrix.com> <C1F8BAECAFA8EB8C9A97D5FA@[10.12.30.106]> <55EDC55B.8000004@egr.msu.edu>

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--On 07 September 2015 13:11 -0400 Adam McDougall <mcdouga9@egr.msu.edu> 
wrote:

> Try this:
> http://discussions.citrix.com/topic/329848-openbsd-with-message-watchdog-
> timeout/
>
> I've used it before for an OpenBSD guest VM.  If that patch is in place
> on any XenServer you migrate to, it should set e1000 for the NIC type if
> you set NicEmulation in the Custom Fields as described in step 2.
>
> A cleaner patch would just let you specify any driver you want, but this
> one is semi-hardcoded for e1000.  You could also try 'virtio' with:
> argv = [arg.replace('rtl8139','virtio') for arg in argv]

Hi,

Thanks for the link. I patched both our in-house XenServers 
[6.5SP1+Hotfixes] with this - it appeared to work OK (i.e. the DomU's came 
up with em0 NIC's - rather than Realtek).

They seem to work OK for pushing traffic - but if I try and migrate a guest 
VM using Intel NIC's with XenServer - it fails miserably and kills it :(

XenServer logs:

 "Migrating VM 'FreeBSD (SWR)' from 'Xen1' to 'Xen2' Internal error: 
Xenops_interface.Internal_error("Unix.Unix_error(2\"open\",\"/var/lib/xen/qemu-save.36\")")"

Other VM's not using the Intel NIC's seem OK. I made sure both the 'source' 
and 'destination' XenServers are patch (there's only two in the pool).

-Karl






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