Create RAID1 under Linux

Experiment

Add two blocks30GHDD

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without restarting, let the The Linux system recognizes the newly added disk

connect to Linux operations server using putty

[Email protected] ~]# fdisk–l

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No newly added two disks identified

[Email protected] ~]# echo "---" >/sys/class/scsi_host/host0/scan

[Email protected] ~]# echo "---" >/sys/class/scsi_host/host2/scan

[Email protected] ~]# echo "---" >/sys/class/scsi_host/host3/scan

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partition for two hard disks

[Email protected] ~]# fdisk/dev/sdb

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[Email protected] ~]# FDISK/DEV/SDC

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[[Email protected]]# mkfs.ext4/dev/sdb1

[[Email protected]]# MKFS.EXT4/DEV/SDC1

CreateRaid1

[[email protected] ~]# Mdadm-cv/dev/md0-l1-n2-c128/dev/sd[b,c]

Mdadm:array/dev/md0 started.

To format

[Email protected] ~]# mkfs.ext4/dev/md0

Create a directory DATA

[Email protected] ~]# mkdir DATA

then mount the/dev/md0 to the DATA directory .

[Email protected]~]# mount/dev/md0 DATA

Edit Settings Auto Mount

[[Email protected]~]# Vi/etc/fstab

at the end of the add /dev/md0/data ext4 defaults 0 0

reboot Restart

Analog Failure

Delete a piece of hard disk, keep only another piece of RAID1

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You can also view the files that are written

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and re-join a hard drive.

[Email protected] ~]# mdadm /dev/md0-a/dev/sdb1