ReadyNAS 424 XRAID Not Expanding

Good catch.  Tried again but same results, no change in volume size:

root@Galactus:~# volume_util -e xraid
Expanding pools...
root@Galactus:~# volume_util -e expand
Expanding pools...
root@Galactus:~# volume_util -s pool
==============================================
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: 3116196KB (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: 29281450624KB (27924 GB)
Available: 7862058724KB (7497 GB)
Snapshot: 0KB (0 MB)
Data allocation: 20471 GB
Data used: 20850909 MB (20362 GB)
Metadata allocation: 34848 MB
Metadata used: 32976 MB
Unallocated: 7389 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: 20471 GB
Metadata allocation: 69696 MB
Unallocated: 7389 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
root@Galactus:~#

OK, this is odd:

     Pool data
          Device: /dev/mapper/Data-0

It should be:

     Pool data
          Device: /dev/md127

Data-0 is the label of the RAID, but the BTRFS volume should be on a md RAID device.  I've only ever seen anything similar when the OS can't properly mount the file system.

I have no idea how to fix it or if it's even fixable sort of a factory default, as it shouldn't ever be that way.  The only thing in /dev/mapper on my NAS is control, which is a character special file one byte long, not a normal file.

Hm, okay, so no options other than reset to factory?

Just did a Factor Default using the boot menu.  XRaid volume is still coming up as 27TB.  Tried Destroying the volume and creating one via the New Volume button, and it's still 27TB under Raid5/XRaid.

Really not sure what to do at this point.

And you are sure XRAID is turned on?  You would be limited to 27TB in FlexRAID.

Finally got this sorted out.  Doing a Factory Default with all four drives in the system resulted in a XRaid volume that was only 27TB, and wouldn't expand.  I tried deleting the volume and re-creating it manually using the UI (Destroy, and then New Volume), but that still resulted in a 27TB volume.

This is what worked:

Insert just the two 10TB drives and create a New Volume via UI, this resulted in a 9TB RAID 1 volume.

Once resync completed, I turned on XRaid.  Volume is still RAID 1.

Insert first 14TB and let XRaid expand and do it's thing.  After Resync, volume is 18TB RAID 5 as expected.

Insert second 14TB and let XRaid expand and do it's thing.  After Resync, voume is 31TB RAID 5 as expected.

Whole process took almost 4 days, but seems to be okay.  Doing restore from backup now.

Glad you figured out how to get it done, even if "painful".  And thanks for sharing the solution in case anyone else has a similar issue.

Definitely seems like a bug to me.  Sounds like Netgear needs to do some testing with larger drives now that they're available.