On Fri, Jan 29, 2016 at 11:43 PM, Deneau, Tom <tom.den...@amd.com> 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
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