＜ファイルシステムのバックアップ＞
ここでは既存ファイルシステムをバックアップ用ファイルシステムへバックアップする手順について説明します。
まず、rootファイルシステムのバックアップからいってみましょう！
GTR# dump -0 -f - /|(cd /backup_root;restore -xy -f -)
DUMP: Date of this level 0 dump: Wed Feb 28 02:40:49 2001
DUMP: Date of last level 0 dump: the epoch
DUMP: Dumping /dev/hda1 (/) to standard output
DUMP: Label: none
DUMP: mapping (Pass I) [regular files]
DUMP: mapping (Pass II) [directories]
DUMP: estimated 1313386 tape blocks.
DUMP: Volume 1 started at: Wed Feb 28 02:40:54 2001
DUMP: dumping (Pass III) [directories]
spcl.c_filesys = /
dirptr = (null)
dirptr = (null)
filesys = /
DUMP: dumping (Pass IV) [regular files]
restore: ./lost+found: ファイルは存在します
DUMP: 57.95% done, finished in 0:03
DUMP: Volume 1 completed at: Wed Feb 28 02:50:23 2001
DUMP: Volume 1 took 0:09:29
DUMP: Volume 1 transfer rate: 2525 KB/s
DUMP: DUMP: 1436827 tape blocks
DUMP: finished in 569 seconds, throughput 2525 KBytes/sec
DUMP: DUMP: Date of this level 0 dump: Wed Feb 28 02:40:49 2001
DUMP: DUMP: Date this dump completed: Wed Feb 28 02:50:23 2001
DUMP: DUMP: Average transfer rate: 2525 KB/s
DUMP: DUMP IS DONE
set owner/mode for '.'? [yn] y
GTR# df -h
ファイルシステム サイズ 使用済 使用可 使用率 マウント場所
/dev/hda1 2.0G 1.4G 575M 71% / ← rootの使用済は1.4GB
/dev/hda5 2.7G 166M 2.4G 7% /home
/dev/hda6 1011M 37M 923M 4% /var
/dev/hdb1 3.8G 1.4G 2.2G 37% /backup_root ← こちらも使用済は1.4GB
/dev/hdb5 9.4G 20k 8.9G 1% /backup_home
/dev/hdb6 733M 20k 696M 1% /backup_var
GTR#
GTR# dump -0 -f - /home|(cd /backup_home;restore -x -f -)
DUMP: Date of this level 0 dump: Wed Feb 28 02:54:43 2001
DUMP: Date of last level 0 dump: the epoch
DUMP: Dumping /dev/hda5 (/home) to standard output
DUMP: Label: none
DUMP: mapping (Pass I) [regular files]
DUMP: mapping (Pass II) [directories]
DUMP: estimated 166665 tape blocks.
DUMP: Volume 1 started at: Wed Feb 28 02:54:50 2001
DUMP: dumping (Pass III) [directories]
spcl.c_filesys = /home
dirptr = (null)
dirptr = (null)
filesys = /home
DUMP: dumping (Pass IV) [regular files]
restore: ./lost+found: ファイルは存在します
DUMP: Volume 1 completed at: Wed Feb 28 02:55:44 2001
DUMP: Volume 1 took 0:00:54
DUMP: Volume 1 transfer rate: 3178 KB/s
DUMP: DUMP: 171612 tape blocks
DUMP: finished in 54 seconds, throughput 3178 KBytes/sec
DUMP: DUMP: Date of this level 0 dump: Wed Feb 28 02:54:43 2001
DUMP: DUMP: Date this dump completed: Wed Feb 28 02:55:44 2001
DUMP: DUMP: Average transfer rate: 3178 KB/s
DUMP: DUMP IS DONE
set owner/mode for '.'? [yn] y
GTR# df -h
ファイルシステム サイズ 使用済 使用可 使用率 マウント場所
/dev/hda1 2.0G 1.4G 575M 71% /
/dev/hda5 2.7G 166M 2.4G 7% /home ← homeの使用済は166MB
/dev/hda6 1011M 37M 923M 4% /var
/dev/hdb1 3.8G 1.4G 2.2G 37% /backup_root
/dev/hdb5 9.4G 166M 8.7G 2% /backup_home ← こちらも使用済は166MB
/dev/hdb6 733M 20k 696M 1% /backup_var
GTR#
GTR# dump -0 -f - /var|(cd /backup_var;restore -xy -f -)
DUMP: Date of this level 0 dump: Wed Feb 28 02:56:49 2001
DUMP: Date of last level 0 dump: the epoch
DUMP: Dumping /dev/hda6 (/var) to standard output
DUMP: Label: none
DUMP: mapping (Pass I) [regular files]
DUMP: mapping (Pass II) [directories]
DUMP: estimated 41242 tape blocks.
DUMP: Volume 1 started at: Wed Feb 28 02:56:52 2001
DUMP: dumping (Pass III) [directories]
spcl.c_filesys = /var
dirptr = (null)
dirptr = (null)
filesys = /var
DUMP: dumping (Pass IV) [regular files]
restore: ./lost+found: ファイルは存在します
DUMP: Volume 1 completed at: Wed Feb 28 02:57:05 2001
DUMP: Volume 1 took 0:00:13
DUMP: Volume 1 transfer rate: 2212 KB/s
DUMP: DUMP: 28768 tape blocks
DUMP: finished in 13 seconds, throughput 2212 KBytes/sec
DUMP: DUMP: Date of this level 0 dump: Wed Feb 28 02:56:49 2001
DUMP: DUMP: Date this dump completed: Wed Feb 28 02:57:05 2001
DUMP: DUMP: Average transfer rate: 2212 KB/s
DUMP: DUMP IS DONE
set owner/mode for '.'? [yn] y
GTR# df -h
ファイルシステム サイズ 使用済 使用可 使用率 マウント場所
/dev/hda1 2.0G 1.4G 575M 71% /
/dev/hda5 2.7G 166M 2.4G 7% /home
/dev/hda6 1011M 37M 923M 4% /var ← varの使用済は37MB
/dev/hdb1 3.8G 1.4G 2.2G 37% /backup_root
/dev/hdb5 9.4G 166M 8.7G 2% /backup_home
/dev/hdb6 733M 37M 660M 6% /backup_var ← こちらも使用済は37MB
GTR#