We have an HP server with an HP MSA storage array attached to it. The MSA had 2 raid arrays installed on it. The 2nd array was not formatted or mounted when the server booted. Using the HP raid utilities we removed the second array, and added the left over drives to the first array. Then we expanded the size of the array to include the new drives. At this point the partition on the first array was still available and mounted within the OS. (The OS, is Cent OS Linux). Once we rebooted the server we now get an error while trying to mount the partition :
mount special device /dev/cciss/c0d0p1 does not exist.
And the partition is no longer mounted and we cannot get access to all the data contained on it.
If we use fdisk or sfdisk we can see the partition still contained within the partition table. But it wont mount, and we figure out why. The critical issue is the data contained on that partition. We must be able to get that information back. Unfortunately our backup of the data doesn't contain all the newest information which is what we need to get back. We need all the data back but the information not contained in the backup is key.
Also if we look in the /dev/ folder we see /dev/cciss/c0d0, which is the entire volume, but not the parition which contains the data.
Any assistance we can get it really helpful.