ack. Yeah, I had seen that and thought I corrected it. Thank you very much, the instances start.
Now I just have to figure out why I seem to be using 2x the number of hugepages I think I should be. Numstat seems to think that now that I've started up the two VMs, I am using twice as many hugepages as the amount I had allocated via sysctl [1]. [1] http://sprunge.us/LLNM On Sat, Jan 31, 2015 at 9:55 AM, Martin Kletzander <mklet...@redhat.com> wrote: > On Fri, Jan 30, 2015 at 03:33:43PM -0800, G. Richard Bellamy wrote: > >> Hello All, >> >> I'm trying to enable hugepages, I've turned off THP (Transparent Huge >> Pages), and enabled hugepages in memoryBacking, and set my 2MB >> hugepages count via sysctl. >> >> I'm getting "libvirtd[5788]: Failed to autostart VM 'atlas': internal >> error: Unable to find any usable hugetlbfs mount for 16777216 KiB" >> where atlas is one of my guests and 16777216 KiB is the amount of >> memory I'm trying to give to the guest. >> >> > Looking at the XML: > > <memoryBacking> > <hugepages> > <page size='16777216' unit='KiB' nodeset='0'/> > > This means you want the guest's memory to be allocated from 16GiB > hugepages. You probably wanted to put this there: > > <page size='2' unit='MiB' ... > > Yes, i can see the hugepages via numastat -m and hugetlbfs is mounted >> via /dev/hugepages and there is a dir structure >> /dev/hugepages/libvirt/qemu (it's empty). >> >> HugePages is big enough to accommodate the 16G i'm allocating... and >> changing the perms on that directory structure to 777 doesn't work >> either. >> >> Any help is much appreciated. >> >> HOST: http://sprunge.us/SEdc >> GUEST: http://sprunge.us/VCYB >> >> Regards, >> Richard >> >> _______________________________________________ >> libvirt-users mailing list >> libvirt-users@redhat.com >> https://www.redhat.com/mailman/listinfo/libvirt-users >> >
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