Ubuntu Create soft RAID5

1. Add 5 SATA virtual hard disks in the virtual machine, each 20G, three data disk, a check disk, a spare disk. Restart the virtual machine when you are finished adding it.

2. View system disk Information

sudo fdisk-l

3. Create a partition for the added virtual hard disk

sudo fdisk/dev/sd[d-f]

Follow the instructions, N: Create a new partition, p: Create primary partition, p: View partition settings, W: Save Changes (others are configured by default)

4. Create a soft RAID5

sudo mdadm--create--auto=yes/dev/md0--level=5--raid-devices=4--spare-devices=1/dev/sdb1/dev/sdc1/dev/sdd1/dev/s De1

--level=5: Create RAID5

--raid-devices=4: Four plates, 3+1

--spare-device=1: Spare Disk One

5. View the created RAID5 information

Mdadm--detail/dev/md0

6. Assigning a file system to RAID5

Mkfs.ext3/dev/md0

7. Mounting

sudo mount/dev/md0/mnt/raid5

8. Restart Auto-load

vim /etc/fstab

Add to

/mnt/raid5/dev/md0 ext3 defaults 0 0

9. Save RAID5 Configuration

mdadm --detail --scan --verbose >> /etc/mdadm.conf

The reboot will appear when it is mounted automatically: Host SMBus Controller not enabled! Filesystem Check or Mount failed!

Workaround: http://xlogin.blog.51cto.com/3473583/823056

After reboot:

View RAID5:

1 [email protected]:~$ df-ht2Filesystem Type Size used Avail use%mounted on3/DEV/SDA1 Ext4 46G4.8G 39G A% /4None Tmpfs4.0K0  4.0K0%/sys/fs/Cgroup5Udev DEVTMPFS2.0G4.0K2.0G1% /Dev6Tmpfs Tmpfs 394M1.4M393M1% /Run7None Tmpfs5.0M     0  5.0M   0%/run/Lock8None Tmpfs2.0G 156K2.0G1%/run/SHM9None Tmpfs 100M 60K 100M1%/run/UserTen /dev/md127 ext3 59G 52M 56G 1/media/meow/0c2bf3fe-e17b-436f-8670-ee636773 8a37  One [email protected]:~$ sudo mdadm--detail/dev/md127 A/dev/md127: -Version:1.2 -Creation time:wed Mar in Geneva: -: -  . the Raid LEVEL:RAID5 -Array Size:62860800(59.95GiB64.37GB) -Used Dev Size:20953600(19.98GiB21.46GB) -Raid Devices:4 +Total Devices:5 -Persistence:superblock isPersistent +  AUpdate time:wed Mar in  +: +:Geneva  . at State:clean -Active Devices:4 -Working Devices:5 -Failed Devices:0 -Spare Devices:1 -  inlayout:left-symmetric - Chunk size:512k to  +Name:ubuntu:0(Local to host Ubuntu) - UUID:DA08FAC9:2B1D0988:B2B19AF5:45166BA4 theEvents: - *  $ Number Major Minor raiddevice StatePanax Notoginseng        0       8        -        0Active sync/dev/SDB1 -        1       8        -        1Active sync/dev/SDC1 the        2       8        the        2Active sync/dev/SDD1 +        5       8        $        3Active sync/dev/Sde1 A  the        4       8       Bayi-SPARE/DEV/SDF1

Well? Md127?

Ubuntu Create soft RAID5