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xen-devel
Re: [Xen-devel] Re: [PATCH][HVM] fix VNIF restore failure on HVMguestwit
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To: |
Mark Williamson <mark.williamson@xxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] Re: [PATCH][HVM] fix VNIF restore failure on HVMguestwith heavy workload |
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From: |
Steven Hand <Steven.Hand@xxxxxxxxxxxx> |
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Date: |
Thu, 12 Apr 2007 19:51:04 +0100 |
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Cc: |
Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>, Steven.Hand@xxxxxxxxxxxx, "Zhai, Edwin" <edwin.zhai@xxxxxxxxx>, Keir Fraser <keir@xxxxxxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, "Zhao, Fan" <fan.zhao@xxxxxxxxx>, Steven Hand <steven.hand@xxxxxxxxxxxx> |
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Thu, 12 Apr 2007 11:49:50 -0700 |
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www-data@xxxxxxxxxxxxxxxxxx |
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Message from Mark Williamson <mark.williamson@xxxxxxxxxxxx> of "Thu, 12 Apr 2007 19:46:40 BST." <200704121946.40557.mark.williamson@xxxxxxxxxxxx> |
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>> 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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