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RN104: ghost “NG-8TB-Seagate” volume (RAID unknown) Inactive/Unprotected
I have a ReadyNAS RN104 that’s working fine from the data point of view, but the volume configuration seems corrupted and is generating constant volume health alerts that I cannot clear. I’m hopi...
OS6's JBOD volumes are actually MDADM single-drive RAID1 volumes where the OS simply does not tell you that the RAID is "degraded" (not redundant). It appears that something is amiss with that process on your NAS. There are some SSH commands that may resolve that, but getting the information StephenB has requested is needed to determine if those are the right ones in your case. The content of mdstat.log will be especially telling.
In addition, did you have the "phantom" 3TB volume before you swapped out the other 3TB for the current 8TB? Do you know which was your "primary" drive (normally, the oldest) before you did the swap?
This is what the mdstat.log shows...
Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md124 : active raid1 sdd3[0]
7809175808 blocks super 1.2 [1/1] [U]
md125 : active raid1 sdc3[0]
2925415808 blocks super 1.2 [1/1] [U]
md126 : active raid1 sda3[0]
1948663808 blocks super 1.2 [1/1] [U]
md127 : active raid1 sdb3[0]
5855671808 blocks super 1.2 [1/1] [U]
md1 : active raid10 sda2[0] sdd2[3] sdc2[2] sdb2[1]
1044480 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU]
md0 : active raid1 sda1[0] sdb1[3] sdd1[4] sdc1[1]
4190208 blocks super 1.2 [4/4] [UUUU]
unused devices: <none>
/dev/md/0:
Version : 1.2
Creation Time : Fri Nov 6 15:01:52 2020
Raid Level : raid1
Array Size : 4190208 (4.00 GiB 4.29 GB)
Used Dev Size : 4190208 (4.00 GiB 4.29 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Fri Mar 6 16:04:19 2026
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Consistency Policy : unknown
Name : 0e34093c:0 (local to host 0e34093c)
UUID : b1079eff:ca275c6a:4df7d648:6f176c9c
Events : 15605
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
1 8 33 1 active sync /dev/sdc1
4 8 49 2 active sync /dev/sdd1
3 8 17 3 active sync /dev/sdb1
/dev/md/1:
Version : 1.2
Creation Time : Thu Feb 12 16:44:04 2026
Raid Level : raid10
Array Size : 1044480 (1020.00 MiB 1069.55 MB)
Used Dev Size : 522240 (510.00 MiB 534.77 MB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Thu Mar 5 15:43:57 2026
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Layout : near=2
Chunk Size : 512K
Consistency Policy : unknown
Name : 0e34093c:1 (local to host 0e34093c)
UUID : 9ecdbab8:7ecf3da9:299f9966:0fa46d04
Events : 19
Number Major Minor RaidDevice State
0 8 2 0 active sync set-A /dev/sda2
1 8 18 1 active sync set-B /dev/sdb2
2 8 34 2 active sync set-A /dev/sdc2
3 8 50 3 active sync set-B /dev/sdd2
/dev/md/NG-8TB-Seagate-0:
Version : 1.2
Creation Time : Thu Feb 12 16:44:07 2026
Raid Level : raid1
Array Size : 7809175808 (7447.41 GiB 7996.60 GB)
Used Dev Size : 7809175808 (7447.41 GiB 7996.60 GB)
Raid Devices : 1
Total Devices : 1
Persistence : Superblock is persistent
Update Time : Fri Mar 6 11:18:02 2026
State : clean
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
Consistency Policy : unknown
Name : 0e34093c:NG-8TB-Seagate-0 (local to host 0e34093c)
UUID : 4a957007:c3c04e0b:0aacb1df:3a59d9e8
Events : 2
Number Major Minor RaidDevice State
0 8 51 0 active sync /dev/sdd3
/dev/md/NG-WDRED-2TB-1-0:
Version : 1.2
Creation Time : Fri Nov 6 20:50:32 2020
Raid Level : raid1
Array Size : 1948663808 (1858.39 GiB 1995.43 GB)
Used Dev Size : 1948663808 (1858.39 GiB 1995.43 GB)
Raid Devices : 1
Total Devices : 1
Persistence : Superblock is persistent
Update Time : Fri Mar 6 12:10:00 2026
State : clean
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
Consistency Policy : unknown
Name : 0e34093c:NG-WDRED-2TB-1-0 (local to host 0e34093c)
UUID : d69ab251:67e359ac:16c640ee:2a0409c0
Events : 2
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
/dev/md/NG-WDRED-3TB-2-0:
Version : 1.2
Creation Time : Fri Nov 6 20:49:32 2020
Raid Level : raid1
Array Size : 2925415808 (2789.89 GiB 2995.63 GB)
Used Dev Size : 2925415808 (2789.89 GiB 2995.63 GB)
Raid Devices : 1
Total Devices : 1
Persistence : Superblock is persistent
Update Time : Fri Mar 6 12:10:00 2026
State : clean
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
Consistency Policy : unknown
Name : 0e34093c:NG-WDRED-3TB-2-0 (local to host 0e34093c)
UUID : 1c072ab5:ea01a5d6:646d6d07:76776925
Events : 2
Number Major Minor RaidDevice State
0 8 35 0 active sync /dev/sdc3
/dev/md/NG-WDRP-6TB-1-0:
Version : 1.2
Creation Time : Tue Jul 18 15:55:20 2023
Raid Level : raid1
Array Size : 5855671808 (5584.40 GiB 5996.21 GB)
Used Dev Size : 5855671808 (5584.40 GiB 5996.21 GB)
Raid Devices : 1
Total Devices : 1
Persistence : Superblock is persistent
Update Time : Fri Mar 6 11:18:27 2026
State : clean
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0
Consistency Policy : unknown
Name : 0e34093c:NG-WDRP-6TB-1-0 (local to host 0e34093c)
UUID : 1d40ffff:601db1f8:20e41e54:f5650fa6
Events : 2
Number Major Minor RaidDevice State
0 8 19 0 active sync /dev/sdb3
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