Mdadm set a RAID disk array and how to rebuild after a partition failure

First, Fdisk establishes a different partition and is set to the FD format

Secondly

5 5 /dev/sda1/dev/sdb1/dev/sdc1/dev/sdd1/dev/sde1

-C: Create a disk array

-L: Disk array RAID5

-N: Using 5 disks to create a

This creates a disk array/dev/md0

The disk array is then formatted

Mkfs.ext3/dev/md0

You can use this disk array after you mount it.

If any of the partitions are damaged, first set this partition to fail

Mdadm/dev/md0--SET-FAULTY/DEV/SDC1

And then remove the damaged partition

Mdadm/dev/md0--REMOVE/DEV/SDC1

And then add a new partition

Mdadm/dev/md0--ADD/DEV/SDC1

The new partition data is now rebuilt, and you can view the rebuild progress by mdadm-d/dev/md0

Once the rebuild is complete, we can use the disk mount.

Mdadm set a RAID disk array and how to rebuild after a partition failure