I would like to know if I can reclaim all of my storage. I do not need to recover data, I am free to be as invasive as I need to be.
Situation: two controllers, each with eight disks, two RAID sets (RAID6). One RAID set is handed off to the OS showing 2.2TB, the other shows 12TB.
I ran a deep scan using testdisk and it returned several dozens of "unrecoverable partitions" but I couldn't find a way to tell testdisk to just remove those partitions and give me all my space back.
testdisk has come back with: The harddisk (2199 GB / 2048 GiB) seems too small! (< 29 TB / 26 TiB) Check the harddisk size: HD jumpers settings, BIOS detection... (maybe there is a jumper or setting somewhere?)
Are the unrecoverable partitions preventing the OS from "seeing" the full size of 12TB? How can I remove unrecoverable partitions and get all of my disk space back?
Adaptec Controllers
Other than the following meaningless diffs, they are both Adaptec 5805 controllers running 1.2.0.30300:
root@system:~# arcconf getconfig 2 AD > /tmp/adapter2.info root@system:~# arcconf getconfig 1 AD > /tmp/adapter1.info root@system:~# diff /tmp/adapter1.info /tmp/adapter2.info 8,10c8,10 < Controller Serial Number : xxxxxxxxxxx < Physical Slot : 3 < Temperature : 77 C/ 170 F (Normal) > Controller Serial Number : yyyyyyyyyyy > Physical Slot : 4 > Temperature : 76 C/ 168 F (Normal) RAID sets
The RAID sets are as I'd expect according to the RAID controller's mgmt tool, arcconf:
root@system:~# arcconf getconfig 1 ld Controllers found: 2 ---------------------------------------------------------------------- Logical device information ---------------------------------------------------------------------- Logical device number 0 Logical device name : STORAGE1 RAID level : 6 Reed-Solomon Status of logical device : Optimal Size : 11427830 MB Stripe-unit size : 256 KB <...snip...> root@system:~# arcconf getconfig 2 ld | more Controllers found: 2 ---------------------------------------------------------------------- Logical device information ---------------------------------------------------------------------- Logical device number 0 Logical device name : STORAGE2 RAID level : 6 Reed-Solomon Status of logical device : Optimal Size : 11427830 MB Stripe-unit size : 256 KB <...snip...> OS programs
lsscsi output:
root@system:~# lsscsi -s | grep Adaptec [0:0:0:0] disk Adaptec STORAGE1 V1.0 /dev/sdc 2.19TB [7:0:0:0] disk Adaptec STORAGE2 V1.0 /dev/sdd 11.9TB testdisk reports:
Disk /dev/sdc - 2199 GB / 2048 GiB - CHS 267349 255 63 Disk /dev/sdd - 11 TB / 10 TiB - Adaptec STORAGE2 After a scan, testdisk shows several partitions:
The following partitions can't be recovered: Partition Start End Size in sectors > MS Data 52734 19503545853 19503493120 MS Data 52736 19503545855 19503493120 MS Data 262654 19503755773 19503493120 MS Data 262656 19503755775 19503493120 MS Data 367102 19503860221 19503493120 MS Data 367104 19503860223 19503493120 MS Data 1311742 19504804861 19503493120 MS Data 1311744 19504804863 19503493120 MS Data 1312254 19504805373 19503493120 MS Data 1312256 19504805375 19503493120 <...snip...> lsblk also only shows 2TB:
root@system:~# lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdc 8:32 1 2T 0 disk sdd 8:48 1 10.9T 0 disk Other things
I've tried:
1.) Use dd to write all zeros to the full disk but it only wrote to 2.2TB until stopped with the message "No space left on device". Again, only writing to 2.2TB of space.
root@system:~# dd if=/dev/zero of=/dev/sdc bs=8M dd: error writing ‘/dev/sdc’: No space left on device 262145+0 records in 262144+0 records out 2199023255552 bytes (2.2 TB) copied, 2870.71 s, 766 MB/s root@system:~# fdisk -l /dev/sdc Disk /dev/sdc: 2 TiB, 2199023255552 bytes, 4294967296 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes 2.) Use parted to remove all partitions and just hand the OS an unpartitioned drive.
root@system:~# parted /dev/sdc GNU Parted 3.2 Using /dev/sdc Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) print Error: /dev/sdc: unrecognised disk label Model: Adaptec STORAGE1 (scsi) Disk /dev/sdc: 2199GB Sector size (logical/physical): 512B/512B Partition Table: unknown Disk Flags: 3.) I've attempted to rebuild the RAID set, deleting and recreating the RAID set, and smartctl scanning all disks. No change.
4.) gpart /dev/sdc returns some stuff but doesn't suggest that I can do much about it (just returns me to my prompt, doesn't stay in gpart interactive mode).
root@system:~# gpart /dev/sdc Begin scan... End scan. Checking partitions... Ok. Guessed primary partition table: Primary partition(1) type: 000(0x00)(unused) size: 0mb #s(0) s(0-0) chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r Primary partition(2) type: 000(0x00)(unused) size: 0mb #s(0) s(0-0) chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r Primary partition(3) type: 000(0x00)(unused) size: 0mb #s(0) s(0-0) chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r Primary partition(4) type: 000(0x00)(unused) size: 0mb #s(0) s(0-0) chs: (0/0/0)-(0/0/0)d (0/0/0)-(0/0/0)r 
testdiskcan see more partitions so I'm not sure where to go for assistance. The RAID sets are 2x12TB but by the time the OS gets them, they're 12TB and 2.2TB. Are you suggesting my RAID controller is going bad? Close this if we must; I guess I'm left with swapping out hardware.