In dire need of help.

[klarkin]

Long story short, I have a 4TB array that I configured using parted (gpt
partition) and lvm. I started moving data onto the array, and the server hung
after having MOVED (not copied) about 3TB of data onto the array.  I rebooted to
find I can no longer mount, or even print the partition!

address@hidden backup]# parted /dev/sdb print
Error: Unable to open /dev/sdb - unrecognised disk label.                 
Information: Don't forget to update /etc/fstab, if necessary

I dont know what to do.  Could someone please see if they could guide me through
at least getting access to the partition, therefore the data again so I can move
everything back off the array?

Thank you.