RE: [Xen-users] Xen SAN Questions

["Tait Clarridge" <Tait.Clarridge@xxxxxxxxxxxx>]

Hello John,

To answer your questions:

>Well, first off, ask yourself why you're using a cluster filesystem in  
>the first place.  Do you have active-active writers on the same  
>filesystem at the same time?  If the answer is no, then get rid of GFS  
>-- you don't need it.

The reason for this was so that I could have two Xen hosts using their local 
storage but to also have it replicating between servers for backup purposes. 
Maybe I was going about this the wrong way, but I wanted to have the ability to 
use the large storage pool (created by the cluster) as a platform for storing 
VMs as well as have it back everything up on two separate locations of disk.

>Second, what's this about DRDB *and* SAN?  Are the disks shared (SAN)  
>or DRDB (local RAID)?

To clarify, the disks themselves will be a RAID-5 local to each machine (1 
array per machine, 2 in total) with DRBD running between to sort of RAID-1 them 
over the network. Does that help? I want to take the local RAID from both 
machines and turn it into a SAN.

I was wondering whether using DRBD and a cluster filesystem would work better 
than using XFS+DRBD and exporting NFS.

Thanks for the quick response!

Best,
Tait



_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users