Proxmox 4.4 CEPH & timeframe

[Ekkas]

Thank you for 4.3, looks and feel very nice!
I see in the roadmap:
* update Ceph Server to next LTS (Jewel, including new GUI)
There is no mention of kernel 4.5 which is a requirement new for ceph jewel tunables
Would Proxmox 4.4 use kernel 4.5, and if so, is there an estimate on the release date?
Thanks
Ekkas

 

[dietmar]

There is no mention of kernel 4.5 which is a requirement new for ceph jewel tunables
Would Proxmox 4.4 use kernel 4.5

I think we will keep the 4.4 kernel (LTS). But 4.5 is not really a requirement for ceph jewel.
AFAIK this only matters if you want to use krbd and new features.

 

[spirit]

AFAIK this only matters if you want to use krbd and new features.

I don't know if it could be easy to backport rbd.ko from upstream kernel.
I have some jewel cluster with last tunables, and already use debian kernel 4.7 on some host where I'm running lxc containers on krbd.

 

[Ekkas]

Thank you for your reply.
I use Jewel on a few clusters with kernel 4.4 no problem, for me it is just the new tunables that need kernel 4.5:
http://docs.ceph.com/docs/jewel/rados/operations/crush-map/
The jewel tunable profile (CRUSH_TUNABLES5 feature) improves the overall behavior of CRUSH such that significantly fewer mappings change when an OSD is marked out of the cluster.
...and...

Which client versions support CRUSH_TUNABLES5

• v10.0.2 (jewel) or later
• Linux kernel version v4.5 or later (for the file system and RBD kernel clients)