mdadm command for Raid
mdadm –create /dev/md0 –level=0 –raid-devices=2 /dev/sdb1 /dev/sdb2
This will crate raid devices level 0 with /dev/sdb1 /dev/sdb2
mdadm –query /dev/name-of-device
This will find out if a given device is a RAID array, or is part of one, and will provide brief information about the device.
mdadm –assemble –scan
This will assemble and start all arrays listed in the standard config file. This command will typically go in a system startup file.
mdadm –stop –scan
This will shut down all arrays that can be shut down (i.e. are not currently in use). This will typically go in a system shutdown script.
