We have a ReadyNAS 4220 in which the status is "Degraded".
I have examined the logs and the mdstat.log reports that raid device is removed. Yesterday I reseated disk 12 and left it resyncing. This mornng it is still showing as degraded. I have just started an extensive disk test to see if that finds anything.
If anyone can offer any advice it would be much appreciated. I have attached image of the mdstat.log as it won't let me upload the zip or text file.
If I can provide any futher information let me know.
You shouldn't publically post links to the full zip file, as there is some privacy leakage when you do that.
You can upload mdstat if you change the extension from .log to .zip. Though it's usually best to use the </> (code) tool in the forum, and simply paste the relevant log portions into the code box.
I rebooted the device this morning and it updated to the latest firmware although it is still stating degraded. The log is still showing 13 disks for some reason. I have copied the mdstat.log below if anyone can give any advice.
Thanks in advance!
Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md127 : active raid6 sdi3[0] sde3[11] sdc3[16] sdh3[13] sdf3[17] sdg3[7] sdd3[6] sdb3[15] sda3[12] sdm3[3] sdl3[2] sdj3[1]
21435290624 blocks super 1.2 level 6, 64k chunk, algorithm 2 [13/12] [UUUUUUUUUUUU_]
md1 : active raid10 sdj2[0] sdh2[11] sdb2[10] sdf2[9] sdc2[8] sde2[7] sdg2[6] sdd2[5] sda2[4] sdm2[3] sdl2[2] sdi2[1]
3139584 blocks super 1.2 512K chunks 2 near-copies [12/12] [UUUUUUUUUUUU]
md0 : active raid1 sdi1[0] sde1[11] sdc1[16] sdh1[13] sdf1[17] sdg1[12] sdd1[6] sdb1[15] sda1[4] sdm1[3] sdl1[2] sdj1[1]
4190208 blocks super 1.2 [13/12] [UUUUUUUUUUUU_]
unused devices: <none>
/dev/md/0:
Version : 1.2
Creation Time : Thu Oct 8 17:31:56 2015
Raid Level : raid1
Array Size : 4190208 (4.00 GiB 4.29 GB)
Used Dev Size : 4190208 (4.00 GiB 4.29 GB)
Raid Devices : 13
Total Devices : 12
Persistence : Superblock is persistent
Update Time : Fri Jun 14 08:58:41 2019
State : active, degraded
Active Devices : 12
Working Devices : 12
Failed Devices : 0
Spare Devices : 0
Consistency Policy : unknown
Name : 43f61440:0 (local to host 43f61440)
UUID : a7a7619c:7aaccfde:b80a3b50:6082776a
Events : 1840063
Number Major Minor RaidDevice State
0 8 129 0 active sync /dev/sdi1
1 8 145 1 active sync /dev/sdj1
2 8 177 2 active sync /dev/sdl1
3 8 193 3 active sync /dev/sdm1
4 8 1 4 active sync /dev/sda1
15 8 17 5 active sync /dev/sdb1
6 8 49 6 active sync /dev/sdd1
12 8 97 7 active sync /dev/sdg1
17 8 81 8 active sync /dev/sdf1
13 8 113 9 active sync /dev/sdh1
16 8 33 10 active sync /dev/sdc1
11 8 65 11 active sync /dev/sde1
- 0 0 12 removed
/dev/md/1:
Version : 1.2
Creation Time : Wed Jun 12 14:49:29 2019
Raid Level : raid10
Array Size : 3139584 (2.99 GiB 3.21 GB)
Used Dev Size : 523264 (511.00 MiB 535.82 MB)
Raid Devices : 12
Total Devices : 12
Persistence : Superblock is persistent
Update Time : Fri Jun 14 05:22:10 2019
State : clean
Active Devices : 12
Working Devices : 12
Failed Devices : 0
Spare Devices : 0
Layout : near=2
Chunk Size : 512K
Consistency Policy : unknown
Name : 43f61440:1 (local to host 43f61440)
UUID : ef626106:1d36ec1d:dea584cc:2134df70
Events : 19
Number Major Minor RaidDevice State
0 8 146 0 active sync set-A /dev/sdj2
1 8 130 1 active sync set-B /dev/sdi2
2 8 178 2 active sync set-A /dev/sdl2
3 8 194 3 active sync set-B /dev/sdm2
4 8 2 4 active sync set-A /dev/sda2
5 8 50 5 active sync set-B /dev/sdd2
6 8 98 6 active sync set-A /dev/sdg2
7 8 66 7 active sync set-B /dev/sde2
8 8 34 8 active sync set-A /dev/sdc2
9 8 82 9 active sync set-B /dev/sdf2
10 8 18 10 active sync set-A /dev/sdb2
11 8 114 11 active sync set-B /dev/sdh2
/dev/md/data-0:
Version : 1.2
Creation Time : Thu Oct 8 17:31:57 2015
Raid Level : raid6
Array Size : 21435290624 (20442.29 GiB 21949.74 GB)
Used Dev Size : 1948662784 (1858.39 GiB 1995.43 GB)
Raid Devices : 13
Total Devices : 12
Persistence : Superblock is persistent
Update Time : Fri Jun 14 08:57:17 2019
State : clean, degraded
Active Devices : 12
Working Devices : 12
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
Consistency Policy : unknown
Name : 43f61440:data-0 (local to host 43f61440)
UUID : 5158a2f3:ff19d5b2:90822650:9b53ac56
Events : 10717368
Number Major Minor RaidDevice State
0 8 131 0 active sync /dev/sdi3
1 8 147 1 active sync /dev/sdj3
2 8 179 2 active sync /dev/sdl3
3 8 195 3 active sync /dev/sdm3
12 8 3 4 active sync /dev/sda3
15 8 19 5 active sync /dev/sdb3
6 8 51 6 active sync /dev/sdd3
7 8 99 7 active sync /dev/sdg3
17 8 83 8 active sync /dev/sdf3
13 8 115 9 active sync /dev/sdh3
16 8 35 10 active sync /dev/sdc3
11 8 67 11 active sync /dev/sde3
- 0 0 12 removed
I rebooted the device this morning and it updated to the latest firmware although it is still stating degraded. The log is still showing 13 disks for some reason. I have copied the mdstat.log below if anyone can give any advice.
It is possible to fix that using the linux command line (using mdadm). But it might be better to have paid netgear support (my.netgear.com) do that for you.
