1

They're attached using a dual sas raid card. The goal is to use mdadm to create a large raid 6 array for nas purposes and a plex server. But I'm not going to try to create a massive 24tb array if I can't even seem to format 4tb.

nasplex@nasplex-pc:~$ sudo gdisk /dev/sdc
GPT fdisk (gdisk) version 1.0.4

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.

Command (? for help): ^C
nasplex@nasplex-pc:~$ sudo parted /dev/sdc
GNU Parted 3.2
Using /dev/sdc
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print                                                            
Model: ATA WDC WD40EZRZ-19G (scsi)
Disk /dev/sdc: 2199GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name              Flags
 1      1049kB  2199GB  2199GB               Linux filesystem

(parted) ^C                                                               

nasplex@nasplex-pc:~$ sudo fdisk -l /dev/sdc
Disk /dev/sdc: 1.102 TiB, 2199023254528 bytes, 4294967294 sectors
Disk model: WDC WD40EZRZ-19G
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: B128F58D-0CAC-4EF4-B57A-B0883ACD65EC

Device     Start        End    Sectors Size Type
/dev/sdc1   2048 4294967260 4294965213   2T Linux filesystem
nasplex@nasplex-pc:~$ 

nasplex@nasplex-pc:~$ lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 111.8G  0 disk 
└─sda1   8:1    0 111.8G  0 part /
sdb      8:16   0 465.8G  0 disk 
├─sdb1   8:17   0   5.6G  0 part 
└─sdb2   8:18   0 460.2G  0 part 
sdc      8:32   0     2T  0 disk 
└─sdc1   8:33   0     2T  0 part 
sdd      8:48   0     2T  0 disk 
sde      8:64   0     2T  0 disk 
sdf      8:80   0     2T  0 disk 
sdg      8:96   0     2T  0 disk 
sdh      8:112  0     2T  0 disk 
sdi      8:128  0     2T  0 disk 
sdj      8:144  0     2T  0 disk 
sr0     11:0    1  1024M  0 rom  

  • 1
    What OS/release? (you tagged lubuntu but gave no further details) – guiverc Mar 6 at 2:27
  • 2
    Why mdadm with a sas raid card? What is your raid card? Can it handle drives larger than 2Gb? Could/Should its firmware be updated?... – cmak.fr Mar 6 at 2:45
  • 2
    This seems unusual: Sector size (logical/physical): 512B/512B Most new large drives are 512/4K. developer.ibm.com/tutorials/l-4kb-sector-disks Post this: `sudo gdisk -l /dev/sdc, you canceled the details. You need the -l or use a command to show details: rodsbooks.com/gdisk/walkthrough.html & rodsbooks.com/gdisk – oldfred Mar 6 at 3:43
  • 1
    Basically clean installation of the latest desktop version of lubuntu x86_64 download a couple days ago. Mdadm because my raid card is an ancient ebay special and can only do 1 or 2 won't do raid 6. I'm going to look for a firmware update tonight. Maybe that'll work, and maybe even do raid 6 natively. I'll post full output of gdisk tonight too. I'll also try to figure out exactly what the card is and post that too – Jonah Tebbens Mar 6 at 13:47
2

Because I was using an old raid card. An lsi sas 3801E which only supports up to 2tb disks. See this: Broadcom.com/support/knowledgebase/1211161495837/using-drives-2tb-in-capacity-with-lsi-sas-hbas

Thanks to reddit, and everyone here

|improve this answer|||||

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.