clvm in proxmox 4.1

[Frakir]

Hello,

I have a cluster of proxmox 4.1, all servers are connected to SAN but clvm doesn't work
I can't start clvmd. The cluster works, corosync works, but clvmd doesn't start.

root@s1:~# pveversion
pve-manager/4.1-5/f910ef5c (running kernel: 4.2.6-1-pve)

root@s1:~# service clmv start
Failed to start clmv.service: Unit clmv.service failed to load: No such file or directory.
root@s1:~# clvmd -f
Can't initialise cluster interface.
root@s1:~# journalctl -b | grep clvm
Feb 01 13:43:27 p7 clvmd[7591]: Unable to create DLM lockspace for CLVM: Success

What's wrong? What did I miss?

Best regards,
Serge

 

[tom]

a default setup with SAN does not need clvm - why do you need this?

 

[Frakir]

I have access to the SAN from all servers in the cluster.
How can I use it? Maybe I'm wrong and I don't need clustered lvm?

I'tm trying to create lvm and use it as shared lvm from all servers.
As I understand, I have to make clustered lvm (vgcreate -c y c-vg1 /dev/dm-0).
After that I can't connect to it and proxmox doesn't see it:

root@s1:~# pvdisplay
connect() failed on local socket: В соединении отказано
Internal cluster locking initialisation failed.
WARNING: Falling back to local file-based locking.
Volume Groups with the clustered attribute will be inaccessible.
Skipping clustered volume group c-vg1
Cannot process volume group c-vg1

 

[tom]

As I understand, I have to make clustered lvm (vgcreate -c y c-vg1 /dev/dm-0).

no, you do not need clustered LVM - Proxmox VE got an own integrated locking mechanism.

 

[Fala]

Hello , I have the same problem. I made upgrade cluster PVE 3.4.x to 4.2 .

How do you solve it ?

 

[Frakir]

Hello , I have the same problem. I made upgrade cluster PVE 3.4.x to 4.2 .

How do you solve it ?

I was happy with last answer - with mechanism integrated in proxmox. Without clustered LVM

 

[Fala]

As you perform the migration VG clustered to VG normal?

I found a solution but not yet tested :

https://dhelios.blogspot.com/2015/04/lvm2-change-clustered-lvm-volume-group.html

 

[samontetro]

no, you do not need clustered LVM - Proxmox VE got an own integrated locking mechanism.

Just to be sure I'm understanding the conclusions of this thread could you confirm that I do not need cluster lvm when building a volume group (for VM images) over a drbd storage shared in primary/primary mode between two pve cluster nodes ?
(Using proxmox 4.2)

 

[dietmar]

confirm that I do not need cluster lvm when building a volume group (for VM images) over a drbd storage shared in primary/primary mode between two pve cluster nodes ?
)

Yes, as long as you use the pve tools/GUI to manage volumes. But primary/primary mode is not recommended anymore - we now use drbdmanage ...

 

[samontetro]

.....
But primary/primary mode is not recommended anymore - we now use drbdmanage
...

So this means one drbd volume / VM, I'm right ?

 

[dietmar]

So this means one drbd volume / VM, I'm right ?

one "drbd volume"/"VM volume"