Oracle vm 3.1.x : does not recognize local storage

Question

Hi There
My VM manager does not recognize the local storage however I have a second HDD on my VM server:
[root@myserver ~]# fdisk -l
Disk /dev/sda: 320.0 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 405 3148740 83 Linux
/dev/sda3 406 536 1052257+ 82 Linux swap / Solaris
Disk /dev/sdb: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
Also the Multipath is running:
[root@myserver ~]# service multipathd status
multipathd (pid 2735) is running...
[root@myserver ~]#
The version of OVM is 3.1.1.305
I have used the default partition layout.
I was able to create a server pool without the cluster option but there is no storage bind to it since I could not utilize the local storage and my NFS (which is on a IOMEGA DATA CENTRE external HDD) for some reasons gets timed out while I am adding the server pool with NFS ( NFS was added to the storage no problem but once I try to add a pool on this NFS it gets timesd out)
I am new to OVM and also Linux so please go easy on me :) , Your help is much appriciated.

Answer 1

Very likely "multipath -ll" doesn't show up any path to sdb from the device mapper (neither it is in /dev/mapper)
- Make sure you've rescanned disks from OVM Manager (Select the ovm server disks page) ;
- try to perform "multipath -d" to see if it takes the path from sdb into account. If it is, run "multipath" no option
- try to reboot the OVM server since it's not too late ;-)
Other than that I'm afraid you'll have to figure out why device mapper doesn't map your disk; the ovm server should have "script" install on it. Do the following :
cd /root
script figureoutwhyitsucks.log
multipathd -k
show config
<ctrl>+D
exit
That file would be helpful to figure out.