I tried to change rbd image version from 1 to 2 but it doesn't work. But when i changed in my ceph datastore TM_MAD to qcow2 the new VM instantized from image that was in the datastore stuck on "PENDING". Is there any way to get this working with "existing" images?
2014-04-21 14:53 GMT+02:00 Stuart Longland <stua...@vrt.com.au>: > On 17/04/14 01:18, Leszek Master wrote: > > 1) I'm using OpenNebula 4.4 with ceph datastore. When i try to make > > snapshot i've got error: > > 3) Is there any way to use copy-on-write in opennebula 4.4 ? > > I did some experimental work on this with our OpenNebula 4.4 instance. > It relies on modern kernel's ability to map version-2 RBD images using > the kernel rbd driver, so it needs kernel >3.10 (? Not sure of exact > version; we're using 3.13). > > This newer format allows copy-on-write cloning. "Hot" snapshots work, > however I haven't managed to trigger a deferred snapshot, so that's > untested. The driver also makes use of hypervisor-side cache using > FlashCache, allocating slices of a nominated LVM volume to boost > performance. > > I've thrown my work into a git repository for now, consider this very > much pre-alpha. If you're brave, feel free to give it a go: > > git clone git://git.longlandclan.yi.org/opennebula-ceph-flashcache.git > > Regards, > -- > Stuart Longland > Systems Engineer > _ ___ > \ /|_) | T: +61 7 3535 9619 > \/ | \ | 38b Douglas Street F: +61 7 3535 9699 > SYSTEMS Milton QLD 4064 http://www.vrt.com.au > > >
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