2009-07-20

• ​《Thinking in Java》2e 中文版

• [公務] Hadoop 實驗平台加裝 1.5T 硬碟，並測試設定 LVM2

  ~# apt-get install 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/
  ~# 
  

LVM

• ​鳥哥的 Linux 私房菜 - 關於 LVM 的部分
• ​A Beginner's Guide To LVM
• ​Logical Volume Manager: How can I extend a Volume Group?
• ​How To Resize LVM Software RAID1 Partitions (Shrink & Grow)

High Availability

• ​Getting High With Lenny - 在 Lenny 上打造 HA 的環境

Virtualization

• ​KVM & OpenVZ Virtualization And Cloud Computing With Proxmox VE