I just started using Oracle VM yesterday, so please bear with me.
I have a Dell R400 with a PERC controller card. It controls 4 internal 600GB SAS drives. Two drives each are paired together to form a 600GB RAID 1 virtual disk and a smaller RAID 1 570 GB virtual disk. The other one is smaller as I took about 20+ GB to install the xen OS. Anyway, I have the VM Manager on a different workstation. From the VM Manager workstation, I added the XEN server. In the Servers and VMs tab I see the server as unassigned. But for some reason I can't see the virtual disks I created. I can't add repositories under the Repository tab, or add an Access Group under the Storage tab. What do I have to do to get it so the Oracle VM Manager can see the virtual disks I created?
First of all, OVMM won't recognize any disk as a physical disk, that has any kind of partitioning - just straight LUNs. That said, if you select the server in question and change the perspective on the right to "Physical disks", OVMM will show you what disks it has discovered on that server. If there are the disks/LUNs in your case, present, you can then start by creating a server pool, which will also some small LUN - depending on your needs, you could downsize it so as low as 10 GB.
So, to get started you will need at least 3 LUNs on your system:
a) LUN0 -> 20 GB for the OS
b) LUN1 -> 10 GB for the server pool fs
c) LUN2 -> ??? GB for the storage pool
If you should not see any physical disks on your server, it might be, that OVMM doesn't support the PERC controller. Please, also make sure, that your LUNs do appear on your VM server under /dev/mapper, since this is where OVMM actually scans for disks.
I have a VM manager on a LUN that is on a separate computer (which shouldn't matter). On the other computer I have 3 LUNs. One LUN is for the OS has the server pool OS and the other two are the data LUNs. And in the /dev/mapper directory, I see the two data LUNs:
[root@newora xen]# ls -l /dev/mapper/
brw-rw---- 1 root disk 252, 1 Oct 19 09:18 3690b11c005c83d00181424360e7323aa
brw-rw---- 1 root disk 252, 0 Oct 19 09:18 3690b11c005ce2f0017f550ce14db35e3
crw------- 1 root root 10, 236 Oct 19 09:18 control
But they still don't show up under the storage tab. So what now?