[公務] Hadoop 實驗平台加裝 1.5T 硬碟,並測試設定 LVM2
~# cat /proc/partition
major minor #blocks name
8 0 160836480 sda
8 1 159180021 sda1
8 3 1654695 sda3
8 16 312571224 sdb
8 17 312568641 sdb1
8 32 1465138584 sdc
~# cfdisk /dev/sdc
~# cat /proc/partition
major minor #blocks name
8 0 160836480 sda
8 1 159180021 sda1
8 3 1654695 sda3
8 16 312571224 sdb
8 17 312568641 sdb1
8 32 1465138584 sdc
8 33 1465136001 sdc1
~# pvcreate /dev/sdc1
~# pvdisplay
--- Physical volume ---
PV Name /dev/sdc1
VG Name hadoop
PV Size 1.36 TB / not usable 897.00 KB
Allocatable yes (but full)
PE Size (KByte) 4096
Total PE 357699
Free PE 0
Allocated PE 357699
PV UUID zW4cyi-1jKf-zug9-FcnG-ReVd-82W2-WGdwFP
~# vgcreate hadoop /dev/sdc1
~# vgdisplay
--- Volume group ---
VG Name hadoop
System ID
Format lvm2
Metadata Areas 1
Metadata Sequence No 2
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 1
Open LV 0
Max PV 0
Cur PV 1
Act PV 1
VG Size 1.36 TB
PE Size 4.00 MB
Total PE 357699 <====== 等一下會用到這個數字
Alloc PE / Size 357699 / 1.36 TB
Free PE / Size 0 / 0
VG UUID PTdhAu-cGBn-ZoWh-hL9u-MQ0F-enKT-DOcEtC
~# lvcreate -l 357699 -n hadoop-home hadoop
~# lvdisplay
--- Logical volume ---
LV Name /dev/hadoop/hadoop-home <======= LVM2 裝置的路徑
VG Name hadoop
LV UUID 0C1hUa-QVJW-mAGL-ygtu-DoIL-6Cmi-viGZ8k
LV Write Access read/write
LV Status available
# open 0
LV Size 1.36 TB
Current LE 357699
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 254:0
~# mkfs.ext3 /dev/hadoop/hadoop-home
~# mount /dev/hadoop/hadoop-home /mnt/
~#