Add known issue for ceph rbd compatibility

Change-Id: Ic9693e08d2750c54a20e4e4d4ff060fc5741990e
Related-Bug: 1716735
This commit is contained in:
James Page 2017-09-12 13:08:07 -06:00
parent adc38808cb
commit 0d11fd343c
1 changed files with 20 additions and 0 deletions

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@ -261,6 +261,26 @@ a stable charm update after the 17.08 release.
https://bugs.launchpad.net/charm-heat/+bug/1714157
Nova LXD Ceph support
~~~~~~~~~~~~~~~~~~~~~
Support for presentation of Ceph backed Cinder volumes to Nova LXD
instances is supported in the Pike OpenStack release. This integration
uses the Linux kernel RBD module and requires a minimum of a
Linux 4.5 to support the default crush tunables for Luminous.
Deployments using the release Xenial kernel (4.4) should set the crush
tunables level to 'hammer':
.. code:: bash
juju run --unit ceph-mon/0 'sudo ceph osd crush tunables hammer'
Xenial deployments using hardware enablement kernels (hwe) or
deployments on later Ubuntu releases do not require this workaround.
https://bugs.launchpad.net/charm-ceph/+bug/1716735
Bugs Fixed
==========