Eric, When creating RBD images of image format 2 in v0.92, can you try with
rbd create SMB01/smb01_d1 --size 1000 --image-format 2 --image-shared Without the "--image-shared" option, rbd CLI creates the image with RBD_FEATURE_EXCLUSIVE_LOCK, which is not supported by the linux kernel RDB. Thanks, Raju From: ceph-users [mailto:ceph-users-boun...@lists.ceph.com] On Behalf Of Eric Eastman Sent: Sunday, February 08, 2015 8:46 AM To: Ceph Users Subject: [ceph-users] Problem mapping RBD images with v0.92 Has anything changed in v0.92 that would keep a 3.18 Kernel from mapping a RBD image? I have been using a test script to create RBD images and map them since FireFly and the script has worked fine through Ceph v0.91. It is not working with v0.92, so I minimized it to the following 3 commands which fails on the rbd map command: # ceph osd pool create SMB01 256 256 pool 'SMB01' created # rbd create SMB01/smb01_d1 --size 1000 --image-format 2 # rbd map SMB01/smb01_d1 rbd: sysfs write failed rbd: map failed: (6) No such device or address Same commands worked fine with 0.80.8, 0.87, and 0.91 # ceph -v ceph version 0.92 (00a3ac3b67d93860e7f0b6e07319f11b14d0fec0) # cat /proc/version Linux version 3.18.0-031800-generic (apw@gomeisa) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201412071935 SMP Mon Dec 8 00:36:34 UTC 2014 # rbd -p SMB01 ls -l NAME SIZE PARENT FMT PROT LOCK smb01_d1 1000M 2 # ceph -s cluster 4488a472-e2f0-11e3-9a32-001e0b4843b4 health HEALTH_OK monmap e1: 1 mons at {t10=172.16.30.10:6789/0<http://172.16.30.10:6789/0>} election epoch 1, quorum 0 t10 osdmap e39: 6 osds: 6 up, 6 in pgmap v105: 320 pgs, 2 pools, 16 bytes data, 3 objects 219 MB used, 233 GB / 233 GB avail 320 active+clean # lsmod | grep rbd rbd 74870 0 libceph 247326 1 rbd I made sure the permissions were wide open on the /etc/ceph directory: # ls -la /etc/ceph/ total 20 drwxrwxrwx 2 root root 4096 Feb 7 20:44 . drwxr-xr-x 90 root root 4096 Feb 7 21:39 .. -rwxrwxrwx 1 root root 63 Feb 7 20:44 ceph.client.admin.keyring -rwxrwxrwx 1 root root 1980 Feb 7 20:44 ceph.conf -rwxrwxrwx 1 root root 92 Feb 2 17:02 rbdmap Using strace on the rbd map command shows # strace -s 60 rbd map SMB01/smb01_d1 execve("/usr/bin/rbd", ["rbd", "map", "SMB01/smb01_d1"], [/* 21 vars */]) = 0 brk(0) = 0x40fe000 ... bind(3, {sa_family=AF_NETLINK, pid=0, groups=00000002}, 12) = 0 getsockname(3, {sa_family=AF_NETLINK, pid=2737, groups=00000002}, [12]) = 0 setsockopt(3, SOL_SOCKET, SO_PASSCRED, [1], 4) = 0 open("/sys/bus/rbd/add_single_major", O_WRONLY) = -1 ENOENT (No such file or directory) open("/sys/bus/rbd/add", O_WRONLY) = 4 write(4, "172.16.30.10:6789<http://172.16.30.10:6789> name=admin,key=client.admin SMB01 smb01_d1"..., 62) = -1 ENXIO (No such device or address) close(4) = 0 write(2, "rbd: sysfs write failed", 23rbd: sysfs write failed) = 23 write(2, "\n", 1 ) = 1 close(3) = 0 write(2, "rbd: map failed: ", 17rbd: map failed: ) = 17 write(2, "(6) No such device or address", 29(6) No such device or address) = 29 write(2, "\n", 1 ) = 1 exit_group(6) = ? +++ exited with 6 +++ Thanks Eric ________________________________ PLEASE NOTE: The information contained in this electronic mail message is intended only for the use of the designated recipient(s) named above. If the reader of this message is not the intended recipient, you are hereby notified that you have received this message in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify the sender by telephone or e-mail (as shown above) immediately and destroy any and all copies of this message in your possession (whether hard copies or electronically stored copies).
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