Re: [Xen-devel] Re: [PATCH][HVM] fix VNIF restore failure on HVMguestwith heavy workload

[Steven Hand <Steven.Hand@xxxxxxxxxxxx>]

>> Secondly: there is a known issue with save/restore of ballooned domains
>> (HVM or PV) where the balloning is done from within the guest (e.g.
>> by echoing to /proc/xen/balloon). Since this doesn't update the memory
>> target within xenstore, you'll end up 'reverting' the guest memory size to
>> that last set via xm mem-set. The 'fix' is not to do that, i.e. only use
>> the xm or XenAPI to request ballooning.
>
>Any reason not to have the balloon driver write back to Xenstore if it's 
>used in this way.  Or is it just waiting for a patch to do that?

You also need xend to watch the node and update its internal structures, 
but otherwise that'd be fine. 

cheers,

S.

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