manual/generic/linux/software-raid0

Description

Use Linux utility mdadm to create and delete software RAID0. RAID0 consists of striping, without mirroring or parity.

Install OS on the SUT(system under test) and make sure it boots.
Power off the SUT and install two extra hard drives(use sd(b|c) here). The two hard drives shoud have the same mode, at least the same capacity.
Boot to OS and make sure mdadm utility installed.
Create 'Linux RAID auto' partition on each of the two hard drives by running the following steps.
1) "fdisk /dev/sdx"
2) Delete all existing partitions with fdisk command "d"
3) Create Linux raid auto partition with fdisk commands "n -> p -> 1 -> enter -> enter -> t -> fd -> w"
Run the folliwng steps to test RAID0.
1) "mdadm -C /dev/md0 -l raid0 -n 2 /dev/sd[b-c]1"
2) 'cat /proc/mdstat' to see if md0 created and running."
3) "mkfs.ext4 /dev/md0"
4) Run dd performance test on md0 "automated/linux/dd-wr-speed.sh -p /dev/md0 -t ext4"
5) Inspect the above test result. Compare with test result on single disk, you should see performance boost.
Remove the md0 by running the following steps.
1) "umount /dev/md0"
2) "mdadm --stop /dev/md0"
3) "mdadm --remove /dev/md0"
4) "mdadm --zero-superblock /dev/sdb1 /dev/sdc1"