Thanks David, I upgraded the kernel version and the rbd map worked. Regards, Shambhu
From: David Turner [mailto:drakonst...@gmail.com] Sent: Wednesday, May 31, 2017 9:35 PM To: Shambhu Rajak; ceph-users@lists.ceph.com Subject: Re: [ceph-users] rbd map fails, ceph release jewel You are trying to use the kernel client to map the RBD in Jewel. Jewel RBDs have options enabled that require you to run a kernel 4.9 or newer. You can disable the features that are requiring the newer kernel, but that's not very good as those new features are very nice to have. You can use RBD-fuse to mount them, that is up to date for your Ceph version. I would probably go the RBD-fuse route in your position, unless upgrading your kernel to 4.9 is an option. On Wed, May 31, 2017 at 9:36 AM Shambhu Rajak <sra...@sandvine.com<mailto:sra...@sandvine.com>> wrote: Hi Cepher, I have created a pool and trying to create rbd image on the ceph client, while mapping the rbd image it fails as: ubuntu@shambhucephnode0:~$ sudo rbd map pool1-img1 -p pool1 rbd: sysfs write failed In some cases useful info is found in syslog - try "dmesg | tail" or so. rbd: map failed: (5) Input/output error so I checked the dmesg as suggested: ubuntu@shambhucephnode0:~$ dmesg | tail [788743.741818] libceph: mon2 10.186.210.243:6789<http://10.186.210.243:6789> feature set mismatch, my 4a042a42 < server's 2004a042a42, missing 20000000000 [788743.746352] libceph: mon2 10.186.210.243:6789<http://10.186.210.243:6789> socket error on read [788753.757934] libceph: mon2 10.186.210.243:6789<http://10.186.210.243:6789> feature set mismatch, my 4a042a42 < server's 2004a042a42, missing 20000000000 [788753.777578] libceph: mon2 10.186.210.243:6789<http://10.186.210.243:6789> socket error on read [788763.773857] libceph: mon0 10.186.210.241:6789<http://10.186.210.241:6789> feature set mismatch, my 4a042a42 < server's 2004a042a42, missing 20000000000 [788763.780539] libceph: mon0 10.186.210.241:6789<http://10.186.210.241:6789> socket error on read [788773.790371] libceph: mon1 10.186.210.242:6789<http://10.186.210.242:6789> feature set mismatch, my 4a042a42 < server's 2004a042a42, missing 20000000000 [788773.811208] libceph: mon1 10.186.210.242:6789<http://10.186.210.242:6789> socket error on read [788783.805987] libceph: mon1 10.186.210.242:6789<http://10.186.210.242:6789> feature set mismatch, my 4a042a42 < server's 2004a042a42, missing 20000000000 [788783.826907] libceph: mon1 10.186.210.242:6789<http://10.186.210.242:6789> socket error on read I am not sure what is going wrong here, my cluster health is HEALTH_OK though. My configuration details: Ceph version: ceph version 10.2.7 (50e863e0f4bc8f4b9e31156de690d765af245185) OSD: 12 on 3 storage nodes Monitor : 3 running on the 3 osd nodes OS: No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.04.5 LTS Release: 14.04 Codename: trusty Ceph Client Kernal Version: Linux version 3.13.0-95-generic (buildd@lgw01-58) (gcc version 4.8.4 (Ubuntu 4.8.4-2ubuntu1~14.04.3) ) KRBD: ubuntu@shambhucephnode0:~$ /sbin/modinfo rbd filename: /lib/modules/3.13.0-95-generic/kernel/drivers/block/rbd.ko license: GPL author: Jeff Garzik <j...@garzik.org<mailto:j...@garzik.org>> description: rados block device author: Yehuda Sadeh <yeh...@hq.newdream.net<mailto:yeh...@hq.newdream.net>> author: Sage Weil <s...@newdream.net<mailto:s...@newdream.net>> author: Alex Elder <el...@inktank.com<mailto:el...@inktank.com>> srcversion: 48BFBD5C3D31D799F01D218 depends: libceph intree: Y vermagic: 3.13.0-95-generic SMP mod_unload modversions signer: Magrathea: Glacier signing key sig_key: 51:D5:D7:73:F1:07:BA:1B:C0:9D:33:68:38:C4:3C:DE:74:9E:4E:05 sig_hashalgo: sha512 Thanks, Shambhu Rajak _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com<mailto:ceph-users@lists.ceph.com> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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