[geeks] Linux LVM on iSCSI question

[Patrick Giagnocavo]

John Francini wrote:

> Which particular clustering solution is it?  Does it include any sort  
> of distributed file lock manager to prevent exactly what you're  
> (justly) worried about?
> 
> Absent any sort of cross-system locking protocol, yes -- you Don't  
> Want To Do That.
> 
> Here in our shop (Dell EqualLogic storage array development), we use  
> Linux servers extensively -- all with 'naked' volumes -- no LVM --  
> since we can do most of the things on the arrays that one would  
> normally do in LVM.

Agreed that LVM may well be better handled by the external array itself
in many cases.  However LVM for this solution is used to snapshot the
running VMs without taking them down, using the kernel's knowledge to
force consistency on the disks, then snapshotting - they don't have a
way to snapshot on any other filesystem other than LVM.

The solution in questions is ProxMox , pretty slick Linux-only
virtualization (when using OpenVZ and not KVM0 similar to Solaris
zones/containers.

Main page with screenshots:

http://pve.proxmox.com/wiki/Main_Page

Their storage model page:

http://pve.proxmox.com/wiki/Storage_Model

Cordially

Patrick