>-----Original Message----- >From: Gruher, Joseph R >Sent: Tuesday, November 19, 2013 12:24 PM >To: 'Wolfgang Hennerbichler'; Bernhard Glomm >Cc: ceph-users@xxxxxxxxxxxxxx >Subject: RE: Size of RBD images > >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 > I think I figured out where I went wrong here. I had thought if you didn't specify the pool on the 'rbd create' command line you could then later map to any pool. In retrospect that probably doesn't make a lot of sense and it appears if you don't specify the pool at the create step it just defaults to the rbd pool. See example below. ceph@joceph-client01:/etc/ceph$ sudo rbd create --size 1048576 testimage5 --pool testpool01 ceph@joceph-client01:/etc/ceph$ sudo rbd map testimage5 --pool testpool01 ceph@joceph-client01:/etc/ceph$ sudo rbd create --size 1048576 testimage6 ceph@joceph-client01:/etc/ceph$ sudo rbd map testimage6 --pool testpool01 rbd: add failed: (2) No such file or directory ceph@joceph-client01:/etc/ceph$ sudo rbd map testimage6 --pool rbd ceph@joceph-client01:/etc/ceph$ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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