I can't migrate to NFS because the disk io performance won't handle my VM's. There isn't any sunstone modification to use rbd v2 images snapshots ? I can create them using rbd snap create, but don't have the possibility to use it via sunstone.
2014-05-14 16:31 GMT+02:00 Vladislav Gorbunov <vadi...@gmail.com>: > >Can you write me what i need to do to migrate to qcow2 format? I've got > running vm's that cannot be "deleted". I tried migrating them form rbd v1 > to v2 but this doesn't solved my problem. > You need NFS datastore. Only NFS or SSH datastore support qcow2 file > format. But Opennebula can't move image between datastores. > 1. Shutdown vm > 2. Convert from ceph to qcow2 format: > export image="vm-disk-1"; qemu-img convert -O qcow2 rbd:`oneimage show > $image|awk '/^SOURCE/ {print $3}'` > /var/lib/one/datastore/123/$image.qcow2 > 3. Rename ceph image: > oneimage rename $image $image.bak > 4. Import qcow2 image to NFS datastore with id 123 for example: > oneimage create -d nfsdatastorename --name $image --type os > --persistent --source /var/lib/one/datastores/123/$image.qcow2 > --driver qcow2 --size `rbd info rados/$image|awk '/size/ {print > $5*4}'` > 5. Start vm > > 2014-05-14 22:08 GMT+12:00 Leszek Master <keks...@gmail.com>: > > Can you write me what i need to do to migrate to qcow2 format? I've got > > running vm's that cannot be "deleted". I tried migrating them form rbd > v1 to > > v2 but this doesn't solved my problem. > > > > > > 2014-04-30 12:41 GMT+02:00 Javier Fontan <jfon...@opennebula.org>: > > > >> I'm not sure I follow you with that. Just changing the TM from ceph to > >> qcow2 is something that probably doesn't work. One of the things that > >> can be failing is that getting the free space from ceph and qcow2 is > >> totally different and it may be that the datastore is reporting 0 > >> bytes free. In this case the scheduler will never start a VM that uses > >> that datastore. > >> > >> On Wed, Apr 23, 2014 at 9:18 AM, Leszek Master <keks...@gmail.com> > wrote: > >> > 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 > >> >> > >> >> > >> > > >> > > >> > _______________________________________________ > >> > Users mailing list > >> > Users@lists.opennebula.org > >> > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org > >> > > >> > >> > >> > >> -- > >> Javier Fontán Muiños > >> Developer > >> OpenNebula - The Open Source Toolkit for Data Center Virtualization > >> www.OpenNebula.org | @OpenNebula | github.com/jfontan > > > > > > > > _______________________________________________ > > Users mailing list > > Users@lists.opennebula.org > > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org > > >
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