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...t takes care of the hugepages mount. > > A while ago, I've written a wiki to use hugepages in libvirt and Ubuntu. > https://help.ubuntu.com/community/KVM%20-%20Using%20Hugepages > > Maybe this helps? > > ________________________________________ > Van: G. Richard Bellamy [rbellamy@pteradigm.com] > Verzonden: zaterdag 31 januari 2015 0:33 > Aan: libvirt-users@redhat.com > Onderwerp: [libvirt-users] HugePages - can't start guest that requires them > > Hello All, > > I'm trying to enable hugepages, I've turned off THP (Transparent Huge > Page...

Regarding fine tuning my explanation about what system does de actual mounting of Hugepages, you?re probably right?. Thanks for the correction. On upstart systems (like Ubuntu) the mounting of Hugepages is done by the init script qemu-kvm.conf Van: G. Richard Bellamy [mailto:rbellamy at pteradigm.com] Verzonden: zondag 1 februari 2015 0:02 Aan: Dominique Ramaekers CC: libvirt-users at redhat.com Onderwerp: Re: [libvirt-users] HugePages - can't start guest that requires them Yeah, Dominique, your wiki was one of the many docs I read through before/during/after starting down...

I've been having intermittent network issues on my Host - they go away when I stop and disable libvirtd and then reboot. They do not go away if I just stop libvirtd and don't reboot. I'm at a loss as to where to start with my troubleshooting, and being a relative n00b to libvirt, I'd love any pointers. Regards, Richard

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

...t system does de actual > mounting of Hugepages, you’re probably right…. Thanks for the correction. > > On upstart systems (like Ubuntu) the mounting of Hugepages is done by the > init script qemu-kvm.conf > > > > > > > > > > Van: G. Richard Bellamy [mailto:rbellamy@pteradigm.com] > Verzonden: zondag 1 februari 2015 0:02 > Aan: Dominique Ramaekers > CC: libvirt-users@redhat.com > Onderwerp: Re: [libvirt-users] HugePages - can't start guest that requires > them > > > > Yeah, Dominique, your wiki was one of the many docs I read thr...

I've just noticed that I'm having issues with finding files using "locate" when those files are on btrfs subvolume mounts. The issue is that updatedb cannot discern the difference between a btrfs bind mount and btrfs subvolume [1]. This generally means that if you're using btrfs subvolume mounts and updatedb at the same time, and you want to index those subvolumes,

...... If I'm not mistaking, libvirt takes care of the hugepages mount. A while ago, I've written a wiki to use hugepages in libvirt and Ubuntu. https://help.ubuntu.com/community/KVM%20-%20Using%20Hugepages Maybe this helps? ________________________________________ Van: G. Richard Bellamy [rbellamy@pteradigm.com] Verzonden: zaterdag 31 januari 2015 0:33 Aan: libvirt-users@redhat.com Onderwerp: [libvirt-users] HugePages - can't start guest that requires them Hello All, I'm trying to enable hugepages, I've turned off THP (Transparent Huge Pages), and enabled hugepages in memoryBac...

...pt remapping support. (bool) root@eanna i ~ # grep -P "^(?\!#).*GRUB_CMDLINE" /etc/default/grub GRUB_CMDLINE_LINUX_DEFAULT="quiet acpi_osi=Linux iommu=pt iommu=1 transparent_hugepage=never" GRUB_CMDLINE_LINUX="" On Wed, Mar 25, 2015 at 9:53 AM, G. Richard Bellamy <rbellamy@pteradigm.com> wrote: > I've been having intermittent network issues on my Host - they go away when > I stop and disable libvirtd and then reboot. They do not go away if I just > stop libvirtd and don't reboot. > > I'm at a loss as to where to start with my troubleshoo...

On 20.02.2015 21:32, G. Richard Bellamy wrote: > <snip/> > > I've modified my config [1] based on my understanding, and am running > into a new error. Basically I'm hitting the oom-killer [2] even though > the hard_limit [3] of memtune is below the total number of hugepages > set for that NUMA nodeset. > Just drop the hard_limit. It's a blackbox we should

...214029815 221903122 other_node 2195209 219203009 Thanks again for any help. [1]: http://sprunge.us/jZgS [2]: http://sprunge.us/iETF [3] https://www.redhat.com/archives/libvir-list/2014-September/msg00090.html On Wed, Feb 4, 2015 at 12:03 PM, G. Richard Bellamy <rbellamy@pteradigm.com> wrote: > *facepalm* > > Now that I'm re-reading the documentation it's obvious that <page/> > and @nodeset are for the guest, "This tells the hypervisor that the > guest should have its memory allocated using hugepages instead of the > normal n...

*facepalm* Now that I'm re-reading the documentation it's obvious that <page/> and @nodeset are for the guest, "This tells the hypervisor that the guest should have its memory allocated using hugepages instead of the normal native page size." Pretty clear there. Thank you SO much for the guidance, I'll return to my tweaking. I'll report back here with my results.

On Tue, Feb 10, 2015 at 1:14 AM, Michal Privoznik <mprivozn@redhat.com> wrote: > On 09.02.2015 18:19, G. Richard Bellamy wrote: >> First I'll quickly summarize my understanding of how to configure numa... >> >> In "//memoryBacking/hugepages/page[@nodeset]" I am telling libvirt to >> use hugepages for the guest, and to get those hugepages from a