On 28 Sep 2015, at 15:29, Andrew Cooper <andrew.coop...@citrix.com> wrote:
>> In case it’s all stored in the boot node, and dom0’s memory is also >> contained entirely in the same node, is it correct to say that a failure in >> another node would just require to shut down the VMs that are running in >> that node but the rest of the system is still able to run? > > What do you mean by "failure" here? A full DIMM failure would almost > certainly be completely fatal to Xen, while an individual cell failure > does have logic for being propagated to the owning domain, in the hope > that it can take some corrective action. > > ~Andrew Yes, I mean losing a whole DIMM on a node. I was wondering if it’s possible, assuming the xenheap and dom0 are confined to the boot node, to implement some sort of live migration within nodes of a NUMA host. At a first glance I thought it was enough to periodically checkpoint all VMs and possibly do some cleanup after a node is detected dead to avoid using it again but I’m surely oversimplifying the problem. Best regards, Mario _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
