Ubunt : Software RAID 5 + LVM

Example link and other information. open http://intranet.sci.com/blog.php?u=3&b=775
Step software raid 5.
1. Install Ubunt 10.04 server 32bit
2. Install time server

1. apt-get install ntp
2. nano /etc/ntp.conf

change server to 192.168.2.252 << NTP Server IP
3.Set proxy for Update

1. nano /etc/apt/apt.conf

พิมพ์ Acquire::http { Proxy "http://192.168.2.252:9999"; }; finish save file and update and upgrade.
4.

1. Install apt-get install mdadm lvm2

5. Shutdown ubuntu and add hdd in setting storage tree drive.
6. Start Ubuntu
7. Check disk

1. fdisk -l
2. fdisk /dev/sdb

Create partition
8. Create partition:

1. mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sdb1 /dev/sdc2 /dev/sdd3

9. Check :

1. mdadm --detail /dev/md0

10. Save file in config for use startup next time.

1. mdadm -Es | grep md  >>/etc/mdadm/mdadm.conf

11. Test remove hdd on partition and start ubuntu.

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Step software LVM. use ubuntu old in software raid 5.
1. Create partition Physical Volume.

1. pvcreate /dev/md0

2. Create Volume Group.

1. vgcreate vg1 /dev/md0
2.     vgdisplay

3. Create Logical Volume (xxxxx is mean Total PE number in number 5 example 4094 )

1.    lvcreate -l xxxxx -n lv1 vg1 /dev/md0
2.     lvdisplay

4. Format to ext4 or other type partition.

1. mkfs.ext4 /dev/vg1/lv1

5. Create directory and mount. by edit file /etc/fstab and add.

1. /dev/vg1/lv1       /DATA            ext4        defaults        0        0

6. Command mount partition.

1.    mkdir /DATA
2.     mount -a

7. Check partition.

1. df -h /DATA

Finish step software LVM.

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Step software LVM is not set raid. use ubuntu old in software raid 5.
1. Add hdd in virtualbox 3.
2. Start ubuntu and fdisk -l see disk. Example sde , sdf , sdg
3. Create disk by use commad

1. fdisk /dev/sdb

And create disk in step by step.
4. Fdisk -l for see disk. Example sde1 , sdf2 , sdf3.
5. Create Physical Volume :

1. pvcreate /dev/sde1

6. Create Volume Group :

1. vgcreate lvm /dev/sde1

And test display

1. vgdisplay

7. Add disk to Volume Group by use command :

1. vgextend lvm /dev/sdf2

And

1. vgextend lvm /dev/sdg3

 And test display :

1. vgdisplay

8. Create Logical Volume (xxxxx is mean Total PE in number 7.)

1.    lvcreate -l xxxxx -n lv1 lvm
2.     lvdisplay

9. Format to ext4 or other type partition.

1. mkfs.ext4 /dev/lvm/lv1

10. Create directory and mount. by edit file /etc/fstab and add.

1. /dev/lvm/lv1       /DATALVM           ext4        defaults        0        0

11. Command mount partition.

1.    mkdir /DATALVM
2.     mount -a

12. Check partition.

1. df -h /DATALVM

Finish step software LVM formate hdd is not set raid.