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Use 2nd HDD for cPanel

Discussion in 'General Discussion' started by vo0d0o, Apr 11, 2016.

  1. vo0d0o

    vo0d0o Registered

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    Hello,
    i have dedicated server with 2 * 1 TB harddrives.
    Currently i can use only 1 hdd.
    How can i use the 2nd 1TB hdd for accounts (hosting) too?

    In WHM at
    Home » Server Status » Server Information
    i see this info :
    Code:
    Physical Disks
    sd 0:0:0:0: [sda] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
    sd 1:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB)
    sd 0:0:0:0: [sda] Write Protect is off
    sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
    sd 1:0:0:0: [sdb] Write Protect is off
    sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00
    sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
    sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
    sd 1:0:0:0: [sdb] Attached SCSI disk
    sd 0:0:0:0: [sda] Attached SCSI disk
    sd 0:0:0:0: Attached scsi generic sg0 type 0
    sd 1:0:0:0: Attached scsi generic sg1 type 0
    Code:
    Current Disk Usage
    Filesystem      Size  Used Avail Use% Mounted on
    /dev/md1        909G   83G  780G  10% /
    tmpfs            16G     0   16G   0% /dev/shm
    /dev/md0        477M   41M  411M  10% /boot
    /usr/tmpDSK     4.0G  1.2G  2.6G  32% /tmp
    At SSH is see this info:
    Code:
    df -a
    Filesystem     1K-blocks     Used Available Use% Mounted on
    /dev/md1       952410044 86845868 817177824  10% /
    proc                   0        0         0    - /proc
    sysfs                  0        0         0    - /sys
    devpts                 0        0         0    - /dev/pts
    tmpfs           16353884        0  16353884   0% /dev/shm
    /dev/md0          487588    41619    420373  10% /boot
    none                   0        0         0    - /proc/sys/fs/binfmt_misc
    /usr/tmpDSK      4128448  1230408   2688328  32% /tmp
    /tmp             4128448  1230408   2688328  32% /var/tmp
    Which HDD is not usable for WHM ? SDB (= md2)
    What i must do to use the 2nd 1TB HDD to create accounts in WHM?
    (cPanel create at the installation a /home folder at the HDD where all
    accounts stored in)
    I want to make the 2nd HDD usable as md2 with the /home2 folder on it.

    Please help... i don't know which drive is in use and which one is free (currently not used).
    Is md1 = SDA ???

    Thanks in advice for your help!
     
  2. 24x7server

    24x7server Well-Known Member

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    Hello :),

    At this time you are using only one HDD for your server. You have create only / paratition on your server that mean your cPanel and your hosting accounts are using that 1st HDD of your server. First You need to check your RAID and HDD configuration on your server.

    Please provide me the following commands output so that we can assist you on this.

    Code:
    lsblk
    
    cat /proc/mdstat
    
    fdisk -l | grep Disk
    
    mdadm --detail /dev/md0
    
    mdadm --detail /dev/md1
    
    mdadm --detail /dev/md2
     
  3. vo0d0o

    vo0d0o Registered

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    Hello, here are the outputs you want

    Code:
    lsblk
    NAME    MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
    loop0     7:0    0     4G  0 loop  /tmp
    sda       8:0    0 931.5G  0 disk
    ├─sda1    8:1    0     8G  0 part  [SWAP]
    ├─sda2    8:2    0   923G  0 part
    │ └─md1   9:1    0 922.9G  0 raid1 /
    └─sda3    8:3    0   500M  0 part
      └─md0   9:0    0   500M  0 raid1 /boot
    sdb       8:16   0 931.5G  0 disk
    ├─sdb1    8:17   0     8G  0 part  [SWAP]
    ├─sdb2    8:18   0   923G  0 part
    │ └─md1   9:1    0 922.9G  0 raid1 /
    └─sdb3    8:19   0   500M  0 part
      └─md0   9:0    0   500M  0 raid1 /boot
    
    Code:
    cat /proc/mdstat
    Personalities : [raid1]
    md0 : active raid1 sda3[0] sdb3[1]
          511936 blocks super 1.0 [2/2] [UU]
    
    md1 : active raid1 sda2[0] sdb2[1]
          967727104 blocks super 1.1 [2/2] [UU]
          bitmap: 3/8 pages [12KB], 65536KB chunk
    
    unused devices: <none>
    
    Code:
    fdisk -l | grep Disk
    Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
    Disk identifier: 0x000bef1b
    Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
    Disk identifier: 0x00042222
    Disk /dev/md1: 991.0 GB, 990952554496 bytes
    Disk identifier: 0x00000000
    Disk /dev/md0: 524 MB, 524222464 bytes
    Disk identifier: 0x00000000
    
    Code:
    mdadm --detail /dev/md0
    /dev/md0:
            Version : 1.0
      Creation Time : Tue Apr  5 10:18:24 2016
         Raid Level : raid1
         Array Size : 511936 (500.02 MiB 524.22 MB)
      Used Dev Size : 511936 (500.02 MiB 524.22 MB)
       Raid Devices : 2
      Total Devices : 2
        Persistence : Superblock is persistent
    
        Update Time : Sun Apr 10 17:47:35 2016
              State : clean
    Active Devices : 2
    Working Devices : 2
    Failed Devices : 0
      Spare Devices : 0
    
               Name : sd-74634:0
               UUID : 4eb3fe40:33991329:f6838134:b1532fc4
             Events : 22
    
        Number   Major   Minor   RaidDevice State
           0       8        3        0      active sync   /dev/sda3
           1       8       19        1      active sync   /dev/sdb3
    
    Code:
    mdadm --detail /dev/md1
    /dev/md1:
            Version : 1.1
      Creation Time : Tue Apr  5 10:18:25 2016
         Raid Level : raid1
         Array Size : 967727104 (922.90 GiB 990.95 GB)
      Used Dev Size : 967727104 (922.90 GiB 990.95 GB)
       Raid Devices : 2
      Total Devices : 2
        Persistence : Superblock is persistent
    
      Intent Bitmap : Internal
    
        Update Time : Mon Apr 11 13:48:17 2016
              State : clean
    Active Devices : 2
    Working Devices : 2
    Failed Devices : 0
      Spare Devices : 0
    
               Name : sd-74634:1
               UUID : 77179c54:47cb69fe:63917336:88604688
             Events : 3338
    
        Number   Major   Minor   RaidDevice State
           0       8        2        0      active sync   /dev/sda2
           1       8       18        1      active sync   /dev/sdb2
    
    Code:
    mdadm --detail /dev/md2
    mdadm: cannot open /dev/md2: No such file or directory
    
     
  4. cPanelMichael

    cPanelMichael Forums Analyst
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