I Can Do I.T.: pv

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Thursday, 19 January 2017

[CentOS] Create new VG(Volume Group) (새로운 VG 생성)

1. Attach Physical Hard Disk (하드디스크 장착)

2. Partitioning Disk

#> fdisk -l
#> fdisk [DEVICE_PATH]

- Create partition

- Select partition type

3. Create physical volumn (PV 생성)

#> fdisk -l
#> pvcreate [DEVICE_PATH]

4. Create Volume Group

If you want to create new volume group, create volume group

#> vgcreate [VG_NAME] [PV_NAME]

5. Create Logical Volume

#> lvcreate -l [PE_SIZE] [LV_NAME] [VG_NAME]

6. Make filesytem

#> mkfs.ext4 [LV_PATH]

7. Mount LV

#> mount -t [TYPE] [LV_PATH] [MOUNT_PATH]

8. Register in file system table

#> vi /etc/fstab

/dev/extvg1/extlv1 /home ext4 defaults 0 0

[CentOS] Extend Volume Group and Logical Volume (VG 볼륨그룹 LV 확장하는 법)

1. Attach Physical Hard Disk (하드디스크 장착)

2. Partitioning Disk

#> fdisk -l
#> fdisk [DEVICE_PATH]

- Create partition

- Select partition type

3. Create physical volumn (PV 생성)

#> fdisk -l
#> pvcreate [DEVICE_PATH]

4. Extends Volumn Group

#> vgdisplay
#> vgetend [VG_NAME] [PV_NAME]

5. Extends Logical Volume

#> lvdisplay
#> lvextend -l [PE_SIZE] [LV_PATH]

6. Apply extension

#> xfs_growfs [LV_PATH]

Friday, 29 January 2016

[Linux] How to Increase the size of LVM by adding a new disk

1. Check New Disk Device

fdisk -l

2. Create Partition

2.1. Select Device
fdisk /dev/xvdb

2.2. New Partition
Command (m for help): n

2.3. Continue...
Command action
e extended
p primary partition (1-4)
p

Partition number (1-4): 1

First cylinder (1-2610, default 1): (enter)
Last cylinder, +cylinders or +size{K,M,G} (1-2610, default 2610): (enter)

2.4. Change to a partitions system ID
Command (m for help): t
Selected partition 1

Hex code (type L to list codes): 8e
Changed system type of partition 1 to 8e (Linux LVM)

2.5. Save
Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.
Syncing disks.

3. Create PV(Physical Volume)

pvcreate /dev/xvdb1