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ooCHUMoo's avatar
ooCHUMoo
Aspirant
Jan 17, 2021

ReadyNAS 424 XRAID Not Expanding

I was running 4x10TB (XRAID/RAID 5).  I replaced two disk with 14TB so that the configuration is 2x10TB and 2x14TB.  Resync completed, but volume size is the same as before installing the larger disk...
ooCHUMoo's avatar
ooCHUMoo
Aspirant
Jan 18, 2021

Yes, green stripe under XRAID so it's on.  Furthermore, if I click on it, it asks if I want to turn off XRAID and switch to FLEXRAID.

 

If it matters, the drive/slot configuration is 14/10/14/10.  I replaced the 3rd drive initially, and then the 1st drive.

 

Here's partitions.log:

 

major minor #blocks name

8 0 9766436864 sda
8 1 4194304 sda1
8 2 524288 sda2
8 3 9761718216 sda3
8 16 13672382464 sdb
8 17 4194304 sdb1
8 18 524288 sdb2
8 19 9761718216 sdb3
8 32 9766436864 sdc
8 33 4194304 sdc1
8 34 524288 sdc2
8 35 9761718216 sdc3
8 96 4883770583 sdg
8 97 131072 sdg1
8 98 4883638272 sdg2
9 0 4190208 md0
9 127 29284761408 md127
251 0 29284759360 dm-0
8 64 13672382464 sde
8 65 4194304 sde1
8 66 524288 sde2
8 67 9761718216 sde3
9 1 1044480 md1

Sandshark's avatar
Sandshark
Sensei
Jan 18, 2021

If you are comfortable with SSH, the following command should start the expansion:  volume_util  -e  xraid.  If it doesn't, maybe it will at least give an error message that's helpful.

 

There are some more specific commands to tell it what drives to use, but I'm afraid that would mess up XRAID knowing the configuration.  I've only used them in a FlexRAID unit, and then only for experimentation.

  • ooCHUMoo's avatar
    ooCHUMoo
    Aspirant
    Jan 18, 2021

    Interesting.  Tried ssh and got an error:

     

    admin@Galactus:~$ volume_util -e xraid
    Expanding pools...
    sh: 1: btrfs: not found
    admin@Galactus:~$

    • Sandshark's avatar
      Sandshark
      Sensei
      Jan 18, 2021

      Not especially helpful to me, but seems to indicate that some information on the XRAID configuration that it needs to determine how to expand is missing.  Maybe one of the Netgear folks can better interpret it.

       

      The logs indicate that MDADM and the rest of the Linux core are aware of everything, so it must be XRAID that's not, and I don't know where that's located.   See if volume_util  -s  pool will provide more information.

       

      Is the external; drive still disconnected?  Maybe it's getting stuck looking for how to expand it, which it can't do, and never moves to the main volume.

       

      The help on volume_util includes:

       

      Usage: volume_util [-c NAME] [-c NAME D1,..,DN] [-c NAME LEVEL D1,..,DN]
      [-c NAME LEVEL D1,..,DN KEY_FILE] [-d NAME|UUID]
      [-x NAME|UUID] [-e] [-e TYPE] [-v NAME LEVEL D1,...,DN]
      [-f NAME DISK] [-S DISK] [-F DISK] [-s TYPE..]
          
      -e  Expand pool
        TYPE is one of 'auto', 'expand', 'extend', or 'xraid'
        auto - automatically do all forms of expansion
        expand - expand to fill all space on all current disks (disk replacement)
        extend - extend pool to use available new disks (disk addition)
        xraid - grow pool to use available space on some current disks
          (partial disk replacement)

      There is a different command for Flex-RAID expansion and one for "Vdev expand pool", whatever that means, since the only references to Vdev I Google are for ZFS.  Then again, ReadyDataOS used ZFS, I believe, so maybe that's just a leftover in the help.  It appears clear that OS6 borrowed a lot from ReadyDataOS.

       

      I think playing around with the flex-raid command option is a bad idea at this point, but maybe try volume_util  -e  expand, though I rather expect a similar error since that's what the xraid expansion type should have determined was needed, if I'm interpreting the command properly.  You could try -e  auto, too, likely with the same result.  It doesn't say what -e by itself does, and it is allowed, so you could try that as well.  My guess is it's just shorthand for -e  auto and will also give the same result.

       

      The Flex-RAID (-f) option lets you specify devices and the pool (volume), which is what that error message looks like it says it can't find, but I'm afraid it could make things worse if you are not in Flex-RAID mode.  Of course, it might work and just not make it better for future expansion.  If you want to try it, make sure you have a full backup in case a factory default becomes the only way out of a hole you dug yourself.  volume_util  --help will give you the options.

       

      Switching XRAID off and back on has been known to fix issues for some, but it is possible that you will be stuck not being able to go back to XRAID, or possibly worse.  So, again, be sure you have a backup before you try that.

      • ooCHUMoo's avatar
        ooCHUMoo
        Aspirant
        Jan 18, 2021

        volume_util -e expand (and auto) gave the same error as before:

        admin@Galactus:~$ volume_util -e expand
        Expanding pools...
        sh: 1: btrfs: not found
        admin@Galactus:~$

         

        Here's pool info:

        admin@Galactus:~$ volume_util -s pool
        sh: 1: btrfs: not found
        ==============================================
        Pools
        ==============================================
        Pool root:
        Device: /dev/md0
        Node: 9:0
        HostID: 0a440448 (native)
        UUID: b1ed4dd4-2e64-464f-b4f6-f670db7c1024
        Mount point: /
        Size: 3793952KB (3 GB)
        Available: 3118324KB (2 GB)
        RAID Level: 1
        State: redundant
        Action: idle
        Flags: 0x68
        Type: btrfs
        Tier Flag: Disable
        RAIDs:
        md0
        Size: 8380416
        Level: 1
        Action: idle
        Members: 4
        Type: 3
        Flags: 0x28
        Tier: 0
        Data allocation: 0 GB
        Metadata allocation: 0 MB
        Unallocated: 0 GB
        Disks:
        sdd:
        HostID: 0a440448
        Flags: 0x1
        Size: 27344764928 (13039 GB)
        Free: 7811891214
        Controller 0
        Channel: 0
        Model: WDC_WD141KFGX-68FH9N0
        Serial: X0GZ1HMC
        Firmware: 83.00A83
        Class: SATA (3)
        RPM: 7200
        sdc:
        HostID: 0a440448
        Flags: 0x1
        Size: 19532873728 (9314 GB)
        Free: 14
        Controller 0
        Channel: 1
        Model: ST10000VN0004-2GS11L
        Serial: ZJV0MECF
        Firmware: SC60
        Class: SATA (3)
        RPM: 7200
        sdb:
        HostID: 0a440448
        Flags: 0x1
        Size: 27344764928 (13039 GB)
        Free: 7811891214
        Controller 0
        Channel: 2
        Model: WDC_WD141KFGX-68FH9N0
        Serial: X0GYH9WC
        Firmware: 83.00A83
        Class: SATA (3)
        RPM: 7200
        sda:
        HostID: 0a440448
        Flags: 0x1
        Size: 19532873728 (9314 GB)
        Free: 14
        Controller 0
        Channel: 3
        Model: ST10000VN0004-1ZD101
        Serial: ZA2A4XQC
        Firmware: SC60
        Class: SATA (3)
        RPM: 7200
        Pool swap:
        Device: /dev/md1
        Node: 9:1
        HostID: 0a440448 (native)
        UUID: cb058d6c-8287-44b6-9a98-9799db9df490
        Mount point: none
        Size: 0KB (0 GB)
        Available: 0KB (0 GB)
        RAID Level: 10
        State: redundant
        Action: idle
        Flags: 0x28
        Type: swap
        Tier Flag: Disable
        RAIDs:
        md1
        Size: 2088960
        Level: 10
        Action: idle
        Members: 4
        Type: 3
        Flags: 0x28
        Tier: 0
        Disks:
        sdd:
        HostID: 0a440448
        Flags: 0x1
        Size: 27344764928 (13039 GB)
        Free: 7811891214
        Controller 0
        Channel: 0
        Model: WDC_WD141KFGX-68FH9N0
        Serial: X0GZ1HMC
        Firmware: 83.00A83
        Class: SATA (3)
        RPM: 7200
        sdc:
        HostID: 0a440448
        Flags: 0x1
        Size: 19532873728 (9314 GB)
        Free: 14
        Controller 0
        Channel: 1
        Model: ST10000VN0004-2GS11L
        Serial: ZJV0MECF
        Firmware: SC60
        Class: SATA (3)
        RPM: 7200
        sdb:
        HostID: 0a440448
        Flags: 0x1
        Size: 27344764928 (13039 GB)
        Free: 7811891214
        Controller 0
        Channel: 2
        Model: WDC_WD141KFGX-68FH9N0
        Serial: X0GYH9WC
        Firmware: 83.00A83
        Class: SATA (3)
        RPM: 7200
        sda:
        HostID: 0a440448
        Flags: 0x1
        Size: 19532873728 (9314 GB)
        Free: 14
        Controller 0
        Channel: 3
        Model: ST10000VN0004-1ZD101
        Serial: ZA2A4XQC
        Firmware: SC60
        Class: SATA (3)
        RPM: 7200
        Pool data
        Device: /dev/mapper/Data-0
        Node: 251:0
        HostID: 0a440448 (native)
        UUID: 3f6282ad-bf0a-45f2-8e1b-8f3c4a49dae7
        Mount point: /Data
        Size: 29281453696KB (27924 GB)
        Available: 7860386656KB (7496 GB)
        Snapshot: 0KB (0 MB)
        Data allocation: 0 GB
        Data used: 0 MB (0 GB)
        Metadata allocation: 0 MB
        Metadata used: 0 MB
        Unallocated: 0 GB
        RAID Level: 5
        State: redundant
        Action: idle
        Flags: 0x49
        Type: btrfs
        Tier Flag: Disable
        RAIDs:
        md127
        Size: 58569522816
        Level: 5
        Action: idle
        Members: 4
        Type: 3
        Flags: 0x9
        Tier: 0
        Data allocation: 0 GB
        Metadata allocation: 0 MB
        Unallocated: 0 GB
        Disks:
        sdd:
        HostID: 0a440448
        Flags: 0x1
        Size: 27344764928 (13039 GB)
        Free: 7811891214
        Controller 0
        Channel: 0
        Model: WDC_WD141KFGX-68FH9N0
        Serial: X0GZ1HMC
        Firmware: 83.00A83
        Class: SATA (3)
        RPM: 7200
        sdc:
        HostID: 0a440448
        Flags: 0x1
        Size: 19532873728 (9314 GB)
        Free: 14
        Controller 0
        Channel: 1
        Model: ST10000VN0004-2GS11L
        Serial: ZJV0MECF
        Firmware: SC60
        Class: SATA (3)
        RPM: 7200
        sdb:
        HostID: 0a440448
        Flags: 0x1
        Size: 27344764928 (13039 GB)
        Free: 7811891214
        Controller 0
        Channel: 2
        Model: WDC_WD141KFGX-68FH9N0
        Serial: X0GYH9WC
        Firmware: 83.00A83
        Class: SATA (3)
        RPM: 7200
        sda:
        HostID: 0a440448
        Flags: 0x1
        Size: 19532873728 (9314 GB)
        Free: 14
        Controller 0
        Channel: 3
        Model: ST10000VN0004-1ZD101
        Serial: ZA2A4XQC
        Firmware: SC60
        Class: SATA (3)
        RPM: 7200
        admin@Galactus:~$

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