Hi Martinx, currently nova only supports "fallocate" to preallocate space. Use the confirmation option "preallocate_images=space".
"preallocation=metadata" is mentioned in https://blueprints.launchpad.net/nova/+spec/preallocated-images as future work. Belmiro ----------------------- Belmiro Moreira CERN On Sat, Jul 12, 2014 at 3:04 AM, Martinx - ジェームズ <thiagocmarti...@gmail.com> wrote: > When I said "which is slower", I meant that it makes that running Instance > slower later... With preallocatoin=metadata, the running instances will be > a bit faster without losing storage space with lots of zeros... > > My /var/lib/nova/insntances subdir in a XFS File System on top of a > hardware RAID... > > > On 11 July 2014 20:54, Martinx - ジェームズ <thiagocmarti...@gmail.com> wrote: > >> Guys, >> >> How can I configure the Compute Node, to create its qcow2 images, using >> preallocation? >> >> Currently, OpenStack Nova Compute creates the instance image, using >> "qemu-img create" without passing the option "-o preallocation=metadata" to >> it, which is slower. >> >> So, how can I reconfigure nova compute to make use of preallocation?! >> >> Libvirt supports it, commits: >> >> >> http://libvirt.org/git/?p=libvirt.git;a=commit;h=1c9a2fb1aef1729ac86cd6648b5c2b7584f5f698 >> >> >> http://libvirt.org/git/?p=libvirt.git;a=commit;h=790dfee5eaf8600282da5a3d61bf807516f1b87e >> >> Tks! >> Thiago >> > > > _______________________________________________ > Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > >
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