SAN shared directory (Proxmox v2.0 rc1)

[Jina Kumar]

Hello,

I have a some concern about my installation

I’ve installed 2 servers with Proxmox v2.0 rc1 and now I am trying to create a two-node cluster with high availability (I’ve read the documentation for that).
Each server has its own system partition and they both share a data partition located on the SAN (connected with fibre channel).
On that shared partition I’ve created a shared directory with the Central Web-based Management.
My target is do fencing between the servers.

Is that correct or have you got a better idea?

Any idea is welcome
Thank you

 

[udo]

...
Each server has its own system partition and they both share a data partition located on the SAN (connected with fibre channel).
On that shared partition I’ve created a shared directory with the Central Web-based Management.
My target is do fencing between the servers.

Is that correct or have you got a better idea?

Hi,
not realy. Normaly you provide an disk via SAN (iSCSI/FC) to the nodes. You have to create an volumegroup on this disk and add this as lvm-storage in the pve-gui. Your vm-disks will be created as logical volumes on this volume-group.

If you use an filesystem on the shared disk (I don't mean nfs-shares) you need an cluster-fs (to mount on several nodes) - in other cases you will get data-loss!

Udo

 

[Jina Kumar]

If you use an filesystem on the shared disk (I don't mean nfs-shares) you need an cluster-fs (to mount on several nodes) - in other cases you will get data-loss!

How can I do this?

 

[udo]

How can I do this?

Why is an shared disk with lvm-storage not ok?

And how to do this: depends on your storage.

If you realy wan't a "real" filesystem use nfs, or play with an cluster-fs (I don't have experience with cluster-fs).
I prefer lvm-storage (I use this with FC and some nodes for years (since shared storage is available in pve).

Udo

 

[Jina Kumar]

Why is an shared disk with lvm-storage not ok?

Because, I want to share Images(KVM) and Templates(OpenVZ) but with lvm-storage I can only share Images.

What's the better idea?

 

[Jina Kumar]

Nobody knows ?

 

[Norman Uittenbogaart]

Follow this guide, http://pve.proxmox.com/wiki/OpenVZ_on_ISCSI_howto
Add the mounted volume as directory to the panel, and you can do whatever you want with it.

Backups images / templates / containers etc etc etc

 

[Jina Kumar]

It doesn't work with HA cluster

KVM:
task started by HA resource agent
TASK ERROR: volume 'SAN:116/vm-116-disk-1.raw' does not exist

OpenVZ:
task started by HA resource agent
Starting container ...
Container private area /var/lib/vz/private/111 does not exist
TASK ERROR: command 'vzctl start 111' failed: exit code 43

 

[sv63rus]

Nobody knows ?

I have the same problem with OpebVZ. How how you decide this ? my nodes connect to SAN over SAS. I want test use ext3 on top of lvm on connected LUN. or use gfs2.
https://forum.proxmox.com/threads/11473-File-system-type-on-shared-storage-(SAN-IBM-DS3512)