dump + restore
1.掛載備份源www mount /dev/vg1/www /www 2.創建快照 lvcreate -L 16m -p r -s -n www-backup /dev/vg1/www 3.掛載快照 mkdir /mnt/www-backup mount -o ro /dev/vg1/www-backup /mnt/www-backup 4.備份快照 dump -0u -f /tmp/www-backup.dump /mnt/www-backup 5.刪除快照 umount /mnt/www-backup lvremove /dev/vg1/www-backup 6.重做www umount /www mkfs.ext4 /dev/vg1/www mount /dev/vg1/www /www 7.恢復快照 cd /www restore -rf /tmp/www-backup.dump
dd
# mount -o remount,ro /dev/VolGroup00/LogVol01 # lvcreate -L500M -s -n backup /dev/VolGroup00/LogVol01 # dd if=/dev/VolGroup00/backup of=/mnt/VolGroup01/LogVol01/ # mount -o remount,rw /dev/VolGroup00/LogVol01 # umount /mnt/VolGroup01/LogVol01 # lvremove /dev/VolGroup00/backup