I had the same issue when testing on Ubuntu xenial beta. That has 4.4, so should be fine? I had to create images without the new RBD features to make it works. % ceph -v ceph version 10.1.2 (4a2a6f72640d6b74a3bbd92798bb913ed380dcd4) % modinfo rbd filename: /lib/modules/4.4.0-18-generic/kernel/drivers/block/rbd.ko license: GPL description: RADOS Block Device (RBD) driver author: Jeff Garzik <jeff@xxxxxxxxxx> author: Yehuda Sadeh <yehuda@xxxxxxxxxxxxxxx> author: Sage Weil <sage@xxxxxxxxxxxx> author: Alex Elder <elder@xxxxxxxxxxx> srcversion: 9453A7FA5C504B1C95EDA8A depends: libceph intree: Y vermagic: 4.4.0-18-generic SMP mod_unload modversions parm: single_major:Use a single major number for all rbd devices (default: false) (bool) % uname -a Linux xtest 4.4.0-18-generic #34-Ubuntu SMP Wed Apr 6 14:01:02 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux Tim. On Mon, Apr 18, 2016 at 09:51:45AM +0000, Varada Kari wrote: > Using any kernel >= 4.2 shouldn't have any problem. If you are using > kernel version < 4.2, disable the recent features except layering. > Varada > > On Monday 18 April 2016 02:41 PM, $B@JCRM&(B wrote: > > thanks for ur reply~ > I did some search, and found the reason, like the > mail([1]http://lists.ceph.com/pipermail/ceph-users-ceph.com/2015-Septem > ber/004928.html) said, that because the krbd still not yet support the > new RBD features like exclusive-lock. > > 2016-04-18 16:45 GMT+08:00 huang jun <[2]hjwsm1989@xxxxxxxxx>: > > Hi, can you post the 'modinfo rbd' and your cluster state 'ceph -s'. > > 2016-04-18 16:35 GMT+08:00 $B@JCRM&(B <[3]xizhiyong18@xxxxxxxxx>: > > hi cephers: > > > > I create a rbd volume(image) on Jewel release, when exec rbd map, I > got the > > error message as follows.i can not find any message usage in > > syslog/kern.log/messages. > > anyone can share some tips? > > > > ----------------------my ceph > > version-------------------------------------------- > > root@hzbxs-xzy-ceph-dev-mon:~/ceph-cluster# ceph -v > > ceph version 10.1.2 (4a2a6f72640d6b74a3bbd92798bb913ed380dcd4) > > ---------------------system > > info---------------------------------------------------- > > root@hzbxs-xzy-ceph-dev-mon:~/ceph-cluster# cat /etc/debian_version > > 8.4 > > root@hzbxs-xzy-ceph-dev-mon:~/ceph-cluster# uname -a > > Linux hzbxs-xzy-ceph-dev-mon 3.16.0-4-amd64 #1 SMP Debian > 3.16.7-ckt25-2 > > (2016-04-08) x86_64 GNU/Linux > > ----------------------my screen > > snap--------------------------------------------- > > root@hzbxs-xzy-ceph-dev-mon:~/ceph-cluster# ceph osd lspools > > 2016-04-18 16:24:24.691909 7fb08663b700 -1 WARNING: the following > dangerous > > and experimental features are enabled: bluestore,rocksdb > > 2016-04-18 16:24:24.701003 7fb08663b700 -1 WARNING: the following > dangerous > > and experimental features are enabled: bluestore,rocksdb > > 1 rbd, > > root@hzbxs-xzy-ceph-dev-mon:~/ceph-cluster# rbd --image test_volume > info > > --pool rbd > > 2016-04-18 16:24:27.396490 7f2156ea2d40 -1 WARNING: the following > dangerous > > and experimental features are enabled: bluestore,rocksdb > > 2016-04-18 16:24:27.396551 7f2156ea2d40 -1 WARNING: the following > dangerous > > and experimental features are enabled: bluestore,rocksdb > > 2016-04-18 16:24:27.399508 7f2156ea2d40 -1 WARNING: the following > dangerous > > and experimental features are enabled: bluestore,rocksdb > > rbd image 'test_volume': > > size 1024 MB in 256 objects > > order 22 (4096 kB objects) > > block_name_prefix: rbd_data.371a6b8b4567 > > format: 2 > > features: layering, exclusive-lock, object-map, fast-diff, > deep-flatten > > flags: > > root@hzbxs-xzy-ceph-dev-mon:~/ceph-cluster# rbd map test_volume > --pool rbd > > 2016-04-18 16:25:02.547462 7f291c173d40 -1 WARNING: the following > dangerous > > and experimental features are enabled: bluestore,rocksdb > > 2016-04-18 16:25:02.547523 7f291c173d40 -1 WARNING: the following > dangerous > > and experimental features are enabled: bluestore,rocksdb > > 2016-04-18 16:25:02.550352 7f291c173d40 -1 WARNING: the following > dangerous > > and experimental features are enabled: bluestore,rocksdb > > rbd: sysfs write failed > > rbd: map failed: (6) No such device or address > > root@hzbxs-xzy-ceph-dev-mon:~/ceph-cluster# > > > > > _______________________________________________ > > ceph-users mailing list > > [4]ceph-users@xxxxxxxxxxxxxx > > [5]http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > -- > Thank you! > HuangJun > > PLEASE NOTE: The information contained in this electronic mail message > is intended only for the use of the designated recipient(s) named > above. 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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). > > References > > Visible links > 1. http://lists.ceph.com/pipermail/ceph-users-ceph.com/2015-September/004928.html > 2. mailto:hjwsm1989@xxxxxxxxx > 3. mailto:xizhiyong18@xxxxxxxxx > 4. mailto:ceph-users@xxxxxxxxxxxxxx > 5. http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > Hidden links: > 7. http://lists.ceph.com/pipermail/ceph-users-ceph.com/2015-September/004928.html > 8. mailto:xizhiyong18@xxxxxxxxx > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com Tim. -- Tim Bishop http://www.bishnet.net/tim/ PGP Key: 0x6C226B37FDF38D55 _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com