On Tue, May 20, 2014 at 10:14 AM, Pierre Grandin < pierre.grandin at tubemogul.com> wrote: > > After digging some more, i've narrowed to this call : > > https://github.com/jdurgin/nova/blob/havana-ephemeral-rbd/nova/virt/libvirt/imagebackend.py#L787-792 > > The clone seems to fail, as the volume is not created, but i have nothing > in my logs. I've added some debugging and the parameters seems to be > correct : > [...] rbd c29a96da-5165-4190-9727-0b728648f6a6_disk > [...] pool images > [...] image 55542add-6dca-4a01-8f17-bc4aed962f5e > [...] snapshot snap > > No exception is raised according to my logs, i've also read > https://ceph.com/docs/master/rbd/librbdpy/ > > I'm not really clear about how to create the contexts so I can't try to > reproduce it from a simple python script right now. > Ok i found the error with my code. So if i try to do the snapshot with the image and volume from my previous mail, it works : import rbd import rados cluster = rados.Rados(conffile='/etc/ceph/ceph.conf') cluster.connect() src_ioctx = cluster.open_ioctx('images') dest_ioctx = cluster.open_ioctx('volumes') rbd.RBD().clone(src_ioctx, '55542add-6dca-4a01-8f17-bc4aed962f5e', 'snap', dest_ioctx, 'c29a96da-5165-4190-9727-0b728648f6a6_disk', features=rbd.RBD_FEATURE_LAYERING) # rbd -p volumes info c29a96da-5165-4190-9727-0b728648f6a6_disk rbd image 'c29a96da-5165-4190-9727-0b728648f6a6_disk': size 2048 MB in 256 objects order 23 (8192 kB objects) block_name_prefix: rbd_data.1d4886b8b4567 format: 2 features: layering parent: images/55542add-6dca-4a01-8f17-bc4aed962f5e at snap overlap: 2048 MB Now need to find why nova believe it did not work.. -- Pierre > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140520/674db118/attachment.htm>
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