Ah, yes I see this... feature set mismatch, my 4a042a42 < server's 104a042a42, missing 1000000000 which looks like CEPH_FEATURE_CRUSH_V2 Is there any workaround for that? Or what ceph version would I have to back up to? The cbt librbdfio benchmark worked fine (once I had installed librbd-dev on the client). -- Tom > -----Original Message----- > From: Ilya Dryomov [mailto:idryomov@xxxxxxxxx] > Sent: Friday, January 29, 2016 4:53 PM > To: Deneau, Tom > Cc: ceph-users; cbt@xxxxxxxxxxxxxx > Subject: Re: rbd kernel mapping on 3.13 > > On Fri, Jan 29, 2016 at 11:43 PM, Deneau, Tom <tom.deneau@xxxxxxx> wrote: > > The commands shown below had successfully mapped rbd images in the past > on kernel version 4.1. > > > > Now I need to map one on a system running the 3.13 kernel. > > Ceph version is 9.2.0. Rados bench operations work with no problem. > > I get the same error message whether I use format 1 or format 2 or -- > image-shared. > > Is there something different I need to with the 3.13 kernel? > > > > -- Tom > > > > # rbd create --size 1000 --image-format 1 rbd/rbddemo > > # rbd info rbddemo > > rbd image 'rbddemo': > > size 1000 MB in 250 objects > > order 22 (4096 kB objects) > > block_name_prefix: rb.0.4f08.77bd73c7 > > format: 1 > > > > # rbd map rbd/rbddemo > > rbd: sysfs write failed > > rbd: map failed: (5) Input/output error > > You are likely missing feature bits - 3.13 was released way before 9.2.0. > The exact error is printed to the kernel log - do dmesg | tail or so. > > Thanks, > > Ilya _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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