OVS not seeing SAN disk (Netapp)

I have setup Oracle Virtual Mananger v3.1.1 on Oracle Linux with Oracle 11g standard. I have then created two OVS servers (HP DL380 G6) v3.0.3. I then discovered them ok on the OVM. I have created two SAN disks on our Netapp and presented them to both servers over fibre. I was able to see both disks from both servers, setup the server pool, add both servers in a cluster and then create a VM on one of them. So all ok so far.... Next I reboot one of the servers and it struggles to get back into the cluster. I can see that they are not picking up the SAN disks for ages after the reboot, in which case it cannot join the cluster. If I ssh onto the server and look in /dev/mapper the only file there is control. On the server that hasn't been rebooted for ages I can see both SAN disks. If I do service ovs-agent restart a number of times it then adds one of the SAN disks in but by then I cannot connect to the cluster. I have tried all sorts of things looking on forums. Can someone please help me please before I start from scratch and recable using NFS presented storage and try again. Has anyone else had this?

Hi, thanks for your input. At the moment one of the drives has come back (poolfsmnt) but not the storage mount. I have ran the fdisk -l and the results are below... I do have multiple paths but I only put the second fibre cable in each ovs due to the problem I was having, and that made no difference.
The disks I have created are a 100gb for the pool and 1tb for the storage...
[root@sb3lnovs6 mapper]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 3.0G 570M 2.3G 21% /
/dev/sda1 99M 37M 57M 40% /boot
tmpfs 1001M 6.5M 994M 1% /dev/shm
none 981M 40K 981M 1% /var/lib/xenstored
/dev/mapper/360a9800057396d5048346d426b77496d
100G 270M 100G 1% /poolfsmnt/0004fb0000050000e1e515acf7a67a17
[root@sb3lnovs6 mapper]# fdisk -l
Disk /dev/sda: 293.5 GB, 293563949056 bytes
255 heads, 63 sectors/track, 35690 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: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
Disk /dev/sdd: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdd doesn't contain a valid partition table
Disk /dev/sde: 1099.5 GB, 1099529453568 bytes
255 heads, 63 sectors/track, 133676 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sde doesn't contain a valid partition table
Disk /dev/sdc: 1099.5 GB, 1099529453568 bytes
255 heads, 63 sectors/track, 133676 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdc doesn't contain a valid partition table
Disk /dev/dm-0: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-0 doesn't contain a valid partition table
Disk /dev/dm-1: 1099.5 GB, 1099529453568 bytes
255 heads, 63 sectors/track, 133676 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/dm-1 doesn't contain a valid partition table
Disk /dev/sdf: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdf doesn't contain a valid partition table
Disk /dev/sdg: 1099.5 GB, 1099529453568 bytes
255 heads, 63 sectors/track, 133676 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdg doesn't contain a valid partition table
Disk /dev/sdh: 107.3 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdh doesn't contain a valid partition table
Disk /dev/sdi: 1099.5 GB, 1099529453568 bytes
255 heads, 63 sectors/track, 133676 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdi doesn't contain a valid partition table

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