I've created a 10TB LUN (7x 2TB disks in RAID6) on a storage array and presented it to our backup server, running Ubuntu 10.04 32-bit. The OS only sees 8000GB as per fdisk:
# fdisk -l /dev/sde WARNING: GPT (GUID Partition Table) detected on '/dev/sde'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sde: 8000.0 GB, 7999999442944 bytes 255 heads, 63 sectors/track, 972611 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/sde doesn't contain a valid partition table
This isn't a filesystem issue (I plan to use XFS FWIW), because I'm seeing the incorrect capacity before I've even partitioned this device.
I've searched Google high and low and I can't seem to find an answer on where this limit is. Is it because of the 32-bit kernel?
update: using parted doesn't make a difference.
# parted /dev/sde GNU Parted 2.2 Using /dev/sde Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) mklabel gpt (parted) print Model: YA-16SAE Backup_Vol_001 (scsi) Disk /dev/sde: 8000GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags (parted) quit Information: You may need to update /etc/fstab.