do nothing..
do you mean
Code
# mdadm --detail --scan
ARRAY /dev/md/raid metadata=1.2 name=nas:raid UUID=264e1924:4cba2353:1a44a0f8:6fd1dda6
or
Code
# mdadm --examine --scan
ARRAY /dev/md/raid metadata=1.2 UUID=264e1924:4cba2353:1a44a0f8:6fd1dda6 name=nas:raid
or
Code
# mdadm --detail /dev/md/raid
/dev/md/raid:
Version : 1.2
Creation Time : Thu Sep 12 20:34:42 2019
Raid Level : raid5
Array Size : 5860150272 (5588.67 GiB 6000.79 GB)
Used Dev Size : 1953383424 (1862.89 GiB 2000.26 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sun Nov 10 06:00:55 2019
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : nas:raid (local to host nas)
UUID : 264e1924:4cba2353:1a44a0f8:6fd1dda6
Events : 3765
Number Major Minor RaidDevice State
0 8 48 0 active sync /dev/sdd
1 8 64 1 active sync /dev/sde
2 8 80 2 active sync /dev/sdf
3 8 96 3 active sync /dev/sdg
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