Running KVM with hugepages support

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1

Hi,

I want to experiment with hugepages support in KVM.
I have added

<memoryBacking>
<hugepages/>
</memoryBacking>

to my domain xml.
Also I create the directory /hugepages and mounted it using

mount -t hugetlbfs hugetlbfs /hugepages/

and created huge pages using

echo 4096 > /proc/sys/vm/nr_hugepages

Now, when starting the domain from virt-manager, I get the message:

libvirtError: internal error hugetlbfs filesystem is not mounted

What am I doing wrong? What is the recommended way to setup hugepages in opensuse 11.3?

Cheers
Erik

2

Already solved it. The essential advice is that libvirtd will not see the hugepages until after it is restarted.
Then it just works.