システム領域のバックアップを取る手順

システム領域のバックアップを取る手順

・UbuntuのLive-CDで起動。(Bluetooth認識のステップで固まるので起動オプションにnoapicを付けたほうがいいかも)

・ターミナルを起動

・rootになる
　sudo su

・まず各種パッケージ情報を取得
　apt-get update

・LVMインストール
　apt-get install lvm2

・Device Mapperを有効にする
　modprobe dm-mod

・LVM検索
　vgscan

・LVM活性化
　vgchange -a y

・Windowsマシンの共有をマウント
　mount -t cifs -o username=*********,password=******,codepage=cp932,iocharset=utf8,defaults //192.168.0.***/backup /mnt/backup

・ddでバックアップ
　dd if=/dev/VolGroup00/LogVol00 of=/mnt/backup/LogVol00.img

・リストアは逆
　dd if=/mnt/backup/LogVol00.img of=/dev/VolGroup00/LogVol00

Linux 外付けHDD増設

1.USB HDDを挿す

2.認識したか確認
[root@localhost ~]# cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: ATA      Model: FUJITSU MHV2080A Rev: 0000
  Type:   Direct-Access                    ANSI  SCSI revision: 05
Host: scsi1 Channel: 00 Id: 00 Lun: 00
  Vendor: HL-DT-ST Model: DVDRAM GMA4082Nf Rev: HF10
  Type:   CD-ROM                           ANSI  SCSI revision: 05
Host: scsi4 Channel: 00 Id: 00 Lun: 00
  Vendor: StoreJet Model: TS250GSJ25S-S    Rev:
  Type:   Direct-Access                    ANSI  SCSI revision: 02
[root@localhost ~]#

3.どこに認識したか
[root@localhost ~]# dmesg
scsi 4:0:0:0: Direct-Access     StoreJet TS250GSJ25S-S         PQ: 0 ANSI: 2 CCS
SCSI device sdb: 488397168 512-byte hdwr sectors (250059 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 38 00 00
sdb: assuming drive cache: write through
SCSI device sdb: 488397168 512-byte hdwr sectors (250059 MB)
sdb: Write Protect is off
sdb: Mode Sense: 00 38 00 00
sdb: assuming drive cache: write through
 sdb: sdb1
sd 4:0:0:0: Attached scsi disk sdb
sd 4:0:0:0: Attached scsi generic sg2 type 0

4.試しにHDDベンチ計測
[root@localhost ~]# hdparm -ft /dev/sdb

/dev/sdb:
 Timing buffered disk reads:   54 MB in  3.04 seconds =  17.76 MB/sec
[root@localhost ~]#

5.LVM設定

6.fstab追記
起動時にUSBを認識出来ないのでnoautoとfsckは0にする

[root@localhost ~]# cat /etc/fstab
/dev/VolGroup00/LogVol00 /                       ext3    defaults        1 1
LABEL=/boot             /boot                   ext3    defaults        1 2
tmpfs                   /dev/shm                tmpfs   defaults        0 0
devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
sysfs                   /sys                    sysfs   defaults        0 0
proc                    /proc                   proc    defaults        0 0
/dev/VolGroup00/LogVol01 swap                    swap    defaults        0 0
/dev/VolGroup00/LogVol20 /var/lib/vmware/Virtual\040Machines/Windows\0402000\040Professional\0401                    ext3    defaults        1 1
/dev/VolGroup00/LogVol21 /var/lib/vmware/Virtual\040Machines/Windows\0402000\040Professional\0402                    ext3    defaults        1 1
/dev/VolGroup00/LogVol22 /var/lib/vmware/Virtual\040Machines/Windows\040XP\040Professional\0401                      ext3    defaults        1 1
/dev/VolGroup00/LogVol23 /var/lib/vmware/Virtual\040Machines/Windows\040Vista\040(experimental)\0401                 ext3    defaults        1 1
/dev/VolGroup00/LogVol30 /var/lib/vmware/Virtual\040Machines/Other\040Linux\0402.6.x\040kernel\0401                  ext3    defaults        1 1
/dev/VolGroup01/LogVol24 /var/lib/vmware/Virtual\040Machines/Windows\0402000\040Professional\0403                    ext3    noauto          1 0
/dev/VolGroup01/LogVol25 /var/lib/vmware/Virtual\040Machines/Windows\040XP\040Professional\0402                      ext3    noauto          1 0
[root@localhost ~]#