Xencenter guest will not boot

xenserver

I have xen server free edition.
Today one of the guest VM was very loaded and I decided to reboot it.
Now it can not start. It is with Ubuntu 10.04 Server.
The machine is shown as running in xsconsole and in windows Xen control center. It shows 100 % CPU and 100 % RAM usage. The console shows nothing (it doesn't show boot process). And the worst is that I have no backup.
Is there any advice how to see what is going on.
I exported it to file and now I am trying it to import it into another server, because I can't reboot the physical server it runs on. Can this save me (the reboot of the server)

Thank you

Best Answer

I would try xe-toolstack-restart. this will restart all associated services without needing to reboot the cms.

Related Solutions

Dell PowerEdge 2950 III running XenServer with 2 VMs gets sluggish after a week and needs rebooted

Unless the VM's actually need that much CPU horsepower, I'd very seriously consider dropping them to one or two processors each. When a VM wants to use a processor cycle, all four cores of one of your physical processors have to be ready, which can cause some pain if anything else is going on (dom0 in this case).

I'm more familiar with the VMware side of things, but the issue is similar. Try going down to at most two cores per VM, or preferably one. Then see how the response time goes.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1005362

http://communities.vmware.com/thread/143348

Citrix Xen Server 5.6: Virtual Machines (VM) Deleted or Gone Missing

Several commands may help you identify your trouble:

history
cat /var/log/messages
cat /var/log/xenstored-access.log
mount -o remount /dev/sdx
df -h

Best Answer

Related Solutions

Dell PowerEdge 2950 III running XenServer with 2 VMs gets sluggish after a week and needs rebooted

Citrix Xen Server 5.6: Virtual Machines (VM) Deleted or Gone Missing

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