Fresh Install Nethserver 7.8 Raid 5 critical

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Hello Guys, I have an issue with my fresh install nethserver 7.8. I configured it to Raid 5 setup and after the installation i found out on the web server manager that my raid status has critical in md126.

Kindly check below the status. Thanks.

here’s the cat /proc/mdstat

Personalities : [raid6] [raid5] [raid4]
md126 : active raid5 sda2[0] sdd1[4] sdc1[2] sdb1[1]
5849121792 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/3] [UUU_]
[=>…] recovery = 6.8% (132748288/1949707264) finish=667.2min speed=45384K/sec
bitmap: 4/15 pages [16KB], 65536KB chunk

md127 : active raid5 sda3[0] sdd2[4] sdc2[2] sdb2[1]
7867392 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/4] [UUUU]

lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 1.8T 0 disk
├─sda1 8:1 0 1G 0 part /boot
├─sda2 8:2 0 1.8T 0 part
│ └─md126 9:126 0 5.5T 0 raid5 /
└─sda3 8:3 0 2.5G 0 part
└─md127 9:127 0 7.5G 0 raid5 [SWAP]
sdb 8:16 0 1.8T 0 disk
├─sdb1 8:17 0 1.8T 0 part
│ └─md126 9:126 0 5.5T 0 raid5 /
└─sdb2 8:18 0 2.5G 0 part
└─md127 9:127 0 7.5G 0 raid5 [SWAP]
sdc 8:32 0 1.8T 0 disk
├─sdc1 8:33 0 1.8T 0 part
│ └─md126 9:126 0 5.5T 0 raid5 /
└─sdc2 8:34 0 2.5G 0 part
└─md127 9:127 0 7.5G 0 raid5 [SWAP]
sdd 8:48 0 1.8T 0 disk
├─sdd1 8:49 0 1.8T 0 part
│ └─md126 9:126 0 5.5T 0 raid5 /
└─sdd2 8:50 0 2.5G 0 part
└─md127 9:127 0 7.5G 0 raid5 [SWAP]
sr0 11:0 1 1024M 0 rom

raid status

2

Your raid is already in recovery. In about 10 hours the process will be finished and status should return to normal.

If you wish to visualize the proces you can do watch -n 0,1 cat /proc/mdstat where 0,1 stands for 0,1sec

To see detail status of the raid use mdadm --detail /dev/mdxxx where xxx stands for 126, 127 or other raid

Here are some commands you can try if the raid doesn’t readd the disk automatically (but be carefull, please read the man-pages of mdadm!):

set disk faulty:
mdadm --manage --set-faulty /dev/mdxxx /dev/sdnx

remove disk:
mdadm --manage /dev/mdxxx -r /dev/sdnx

readd disk:
mdadm --manage /dev/mdxxx -a /dev/sdnx

sdnx stands for the disk to readd like sdb1 or sda2 …
Some times a reboot is required AFAICR.

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Thanks you so much! You are right!