Jessie and 3.10.0 OpenVZ kernel and the future

[hvisage]

Good day,

So the pst week I see both updates to Debian releasing 8.0 (Jessie) and OpenVZ's 3.10.0 RHEL7 kernel sources released http://lowendtalk.com/discussion/51351/openvz-rhel7-3-10-based-kernel

What is the plan w.r.t. 8.0 and OpenVZ support in the near and medium term future?

W.r.t. 8.0: Will you be supporting a non-systemd installation of 8.0 + PVE ?

 

[dietmar]

What is the plan w.r.t. 8.0 and OpenVZ support in the near and medium term future?

See http://pve.proxmox.com/wiki/Roadmap. We already have a testing repository for Jessie, but
this is not very stable. We will not support non-systemd installations, and we try to use LXC instead of
OpenVZ.

 

[Shazan]

[..] and we try to use LXC instead of OpenVZ.

Do you mean that OpenVZ support will be completely dropped?

 

[mir]

OpenVZ is dead. The released source tree for RHEL7 has a long way to go before even to be considered beta. Add to this that all support utilities is not converted to RHEL7 and still only works with RHEL6 kernels. Given the fact that transition to RHEL7 for openvz started more than 3 years ago I will consider this as a proof that development has stalled.

 

[dietmar]

Do you mean that OpenVZ support will be completely dropped?

OpenVZ dropped itself - see:

http://openvz.livejournal.com/49158.html

 

[dik23]

It would ve nice to at least have a little bit of OpenVZ / LXC crossover rather than just dropping OpenVZ.

 

[mir]

If there is no openvz for kernel 3.10 how should this crossover on 3.10 take place?

 

[dik23]

Perhaps by providing more than one kernel, as has been the case in the past. LXC is fully functional in 2.6.29

http://lxc.sourceforge.net/man/lxc.html

 

[tom]

It would ve nice to at least have a little bit of OpenVZ / LXC crossover rather than just dropping OpenVZ.

Proxmox VE 3.x series support OpenVZ, no plan to drop it there.

Proxmox VE 4.x series does not support OpenVZ.

 

[camaran]

And upgrade from 3.x to 4.x lost data?


Inviato dal mio iPhone utilizzando Tapatalk

 

[mir]

I am quite sure that when the times come there will be an upgrade plan including openvz -> lxc transition.

 

[masterdead]

OpenVZ kernel for 3.10 is already here > https://src.openvz.org/projects/OVZ/repos/vzkernel/browse but still is under development :/

 

[dik23]

I am quite sure that when the times come there will be an upgrade plan including openvz -> lxc transition.

I hope so! Just switching would make my, and I'm sure many others, life very difficult

 

[mir]

I found this recipe earlier today for migration of openvz to lxc: https://www.thomas-krenn.com/en/wik...penVZ_container_to_Linux_containers_.28LXC.29

It requires a stop of the container though - live migration from openvz to lxc would also be to much to hope for.

 

[Patrick Zippenfenig]

Proxmox VE 3.x series support OpenVZ, no plan to drop it there.

Proxmox VE 4.x series does not support OpenVZ.

I'm really surprised, but fully support this decision. LXC container on ceph rbd with HA capabilities would be nice (also shared mounts from host). Do you plan to support live migration with LXC with CRIU or similar?

 

[mir]

Before release of Proxmox 4.0 with LXC live migration will be implemented in LXC. See http://tycho.ws/blog/2014/09/container-migration.html

 

[dik23]

So if there's a 3.10 kernel with OpenVZ being actively developed why drop OpenVZ in 4.x ?

I can understand that OpenVZ is old now and should be replaced what I'm still concerned about is the transition between 3.x and 4.x. If either supported LXC AND OpenVZ the upgrade would be smooth with the ability to change to LXC in place.

The idea of allowing an automated upgrade switch technologies across many containers in one go seriously concerned me.

 

[mir]

So if there's a 3.10 kernel with OpenVZ being actively developed why drop OpenVZ in 4.x ?

You have misunderstand it. There is no actively development for OpenVZ in 3.10 kernel. The sources have been released as is and then it is up to the community to jump in. The former OpenVZ team has been acquired by Virtuozzo to concentrate of developing Virtuozzo Core.

 

[dik23]

Ok, thanks for pointing that out.

How about 3.x ? lxc-checkconfig only produces two problems :

.....
Cgroup namespace: CONFIG_CGROUP_NS missing
.....
Cgroup memory controller: missing
.....

I've not had any contact with LXC (yet). Is there any reason LXC would be a problem in 3.x and if so is there any way those problems could be fixed ?

 

[mir]

Proxmox 3.x uses kernel 2.6.32.