So is there any size limit on RBD images? I had a failure this morning mounting 1TB RBD. Deleting now (why does it take so long to delete if it was never even mapped, much less written to?) and will retry with smaller images. See output below. This is 0.72 on Ubuntu 13.04 with 3.12 kernel.
ceph@joceph-client01:~$ rbd info testrbd
rbd image 'testrbd':
size 1024 GB in 262144 objects
order 22 (4096 kB objects)
block_name_prefix: rb.0.1770.6b8b4567
format: 1
ceph@joceph-client01:~$ rbd map testrbd -p testpool01
rbd: add failed: (13) Permission denied
ceph@joceph-client01:~$ sudo rbd map testrbd -p testpool01
rbd: add failed: (2) No such file or directory
ceph@joceph-client01:/etc/ceph$ rados df
pool name category KB objects clones degraded unfound rd rd KB wr wr KB
data - 0 0 0 0 0 0 0 0 0
metadata - 0 0 0 0 0 0 0 0 0
rbd - 1 2 0 0 0 10 7 8 8
testpool01 - 0 0 0 0 0 0 0 0 0
testpool02 - 0 0 0 0 0 0 0 0 0
testpool03 - 0 0 0 0 0 0 0 0 0
testpool04 - 0 0 0 0 0 0 0 0 0
total used 2328785160 2
total avail 9218978040
total space 11547763200
ceph@joceph-client01:/etc/ceph$ sudo modprobe rbd
ceph@joceph-client01:/etc/ceph$ sudo rbd map testrbd --pool testpool01
rbd: add failed: (2) No such file or directory
ceph@joceph-client01:/etc/ceph$ rbd info testrbd
rbd image 'testrbd':
size 1024 GB in 262144 objects
order 22 (4096 kB objects)
block_name_prefix: rb.0.1770.6b8b4567
format: 1
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