Hello,
I am trying to install a test CephFS "Luminous" system on Ubuntu 16.04.
Everything looks fine, but the `mount.ceph` command fails (error 110, timeout);
kernel logs show a number of messages like these before the `mount`
prog gives up:
libceph: ... feature set mismatch, my 107b84a842aca < server's
40107b84a842aca, missing 400000000000000
I read in [1] that this is feature
CEPH_FEATURE_NEW_OSDOPREPLY_ENCODING which is only supported in
kernels 4.5 and up -- whereas Ubuntu 16.04 runs Linux 4.4.
Is there some tunable or configuration file entry that I can set,
which will make Luminous FS mounting work on the std Ubuntu 16.04
Linux kernel? I.e., is there a way I can avoid upgrading the kernel?
[1]:
http://cephnotes.ksperis.com/blog/2014/01/21/feature-set-mismatch-error-on-ceph-kernel-client
Thanks,
Riccardo
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