The following steps provide the general steps for backing up file systems using the ufsdump command. The examples show specific uses of options and arguments.
Become superuser.
Bring the system to run level S (single-user mode).
# shutdown -g30 -y |
[Optional] Check the file system for consistency with the fsck command.
Running the fsck -m command checks for consistency of file systems. For example, power failures can leave files in an inconsistent state. For more information on the fsck command, see Chapter 39, Checking File System Integrity.
# fsck -m /dev/rdsk/ device-name |
If you need to back up file systems to a remote tape drive:
On the system to which the tape drive is attached (the tape server), add the following entry to its /.rhosts file.
host root |
host |
Specifies the name of the system on which you will run ufsdump to perform the backup. |
On the tape server, verify that the host added to the /.rhosts file is accessible through the name service.
Identify the device name of the tape drive.
The default tape drive is /dev/rmt/0.
Insert a tape that is not write protected into the tape drive.
Back up file systems using the ufsdump command.
Use the following table to select the most common options and arguments for the ufsdump command. See Chapter 45, The ufsdump and ufsrestore Commands (Reference) for other options and arguments.
To ... |
Use This Option or Argument ... |
For Example ... |
See ... |
---|---|---|---|
Do a full backup |
0 option |
ufsdump 0ucf /dev/rmt/0 / | |
Do an incremental backup |
1-9 option |
ufsdump 9ucf /dev/rmt/0 / | |
Back up individual files |
Specify a file or directory |
ufsdump ucf /dev/rmt/0 /export/home/kryten |
|
Record dumps to /etc/dumpdates file |
-u option |
ufsdump 9ucf /dev/rmt/0 /export/home | |
Specify a cartridge tape |
-c option |
ufsdump 9ucf /dev/rmt/0 /export/home | |
Specify the tape drive |
-f dump-file |
ufsdump 9ucf /dev/rmt/0 /export/home | |
Back up local file systems to a remote system's tape device |
remote-system:dump-file |
ufsdump 0ucf pluto:/dev/rmt/0 /export/home |
"Example--Full Backup to Remote System (Solaris 8 Data to Solaris 8 System)" |
If prompted, remove the tape and replace with the next volume.
Label each tape with the volume number, level, date, system name, disk slice, and file system.
Bring the system back to run level 3 by pressing Control-d.
Verify the backup was successful by using the ufsrestore command to display the tape contents.
This command is described in Chapter 44, Restoring Files and File Systems (Tasks).
The following example shows a full backup of the root (/) file system to a QIC-150 tape (/dev/rmt/0).
# shutdown -g30 -y # ufsdump 0ucf /dev/rmt/0 / DUMP: Writing 63 Kilobyte records DUMP: Date of this level 0 dump: Tue Jul 13 10:46:09 1999 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping /dev/rdsk/c0t0d0s0 (starbug:/) to /dev/rmt/0. DUMP: Mapping (Pass I) [regular files] DUMP: Mapping (Pass II) [directories] DUMP: Estimated 71058 blocks (34.70MB). DUMP: Dumping (Pass III) [directories] DUMP: Dumping (Pass IV) [regular files] DUMP: Tape rewinding DUMP: 70936 blocks (34.64MB) on 1 volume at 64 KB/sec DUMP: DUMP IS DONE DUMP: Level 0 dump on Tue Jul 13 10:46:09 1999 # ufsrestore tf /dev/rmt/0 2 . 3 ./lost+found 5696 ./usr 11392 ./var 17088 ./export 22784 ./export/home 28480 ./opt 5697 ./etc 11393 ./etc/default 11394 ./etc/default/sys-suspend 11429 ./etc/default/cron 11430 ./etc/default/devfsadm 11431 ./etc/default/dhcpagent 11432 ./etc/default/fs 11433 ./etc/default/inetinit 11434 ./etc/default/kbd 11435 ./etc/default/nfslogd 11436 ./etc/default/passwd . . . # (Press Control-d to bring system to run level 3) |
The following example shows an incremental backup of the root (/) file system to a 4-mm DAT tape (/dev/rmt/0).
# ufsdump 9ucf /dev/rmt/0 / DUMP: Writing 63 Kilobyte records DUMP: Date of this level 9 dump: Tue Jul 13 10:58:12 1999 DUMP: Date of last level 0 dump: Tue Jul 13 10:46:09 1999 DUMP: Dumping /dev/rdsk/c0t0d0s0 (starbug:/) to /dev/rmt/0. DUMP: Mapping (Pass I) [regular files] DUMP: Mapping (Pass II) [directories] DUMP: Mapping (Pass II) [directories] DUMP: Mapping (Pass II) [directories] DUMP: Mapping (Pass II) [directories] DUMP: Estimated 200 blocks (100KB). DUMP: Dumping (Pass III) [directories] DUMP: Dumping (Pass IV) [regular files] DUMP: Tape rewinding DUMP: 124 blocks (62KB) on 1 volume at 8 KB/sec DUMP: DUMP IS DONE DUMP: Level 9 dump on Tue Jul 13 10:58:12 1999 # ufsrestore tf /dev/rmt/0 2 . 3 ./lost+found 5696 ./usr 11392 ./var 17088 ./export 22784 ./export/home 28480 ./opt 5697 ./etc 11393 ./etc/default 11394 ./etc/default/sys-suspend 11429 ./etc/default/cron 11430 ./etc/default/devfsadm 11431 ./etc/default/dhcpagent 11432 ./etc/default/fs 11433 ./etc/default/inetinit 11434 ./etc/default/kbd 11435 ./etc/default/nfslogd 11436 ./etc/default/passwd 11437 ./etc/default/tar . . . |
The following example shows a full backup of the /export/home/kryten directory to a 4-mm DAT tape.
# ufsdump 0ucf /dev/rmt/0 /export/home/kryten DUMP: Writing 63 Kilobyte records DUMP: Date of this level 0 dump: Tue Jul 13 11:30:45 1999 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping /dev/rdsk/c0t3d0s7 (pluto:/export/home) to /dev/rmt/0. DUMP: Mapping (Pass I) [regular files] DUMP: Mapping (Pass II) [directories] DUMP: Estimated 232 blocks (116KB). DUMP: Dumping (Pass III) [directories] DUMP: Dumping (Pass IV) [regular files] DUMP: Tape rewinding DUMP: 124 blocks (62KB) on 1 volume at 8 KB/sec DUMP: DUMP IS DONE # ufsrestore tf /dev/rmt/0 2 . 2688 ./kryten 5409 ./kryten/letters 5410 ./kryten/letters/letter1 5411 ./kryten/letters/letter2 5412 ./kryten/letters/letter3 2689 ./kryten/.profile 8096 ./kryten/memos 30 ./kryten/reports 31 ./kryten/reports/reportA 32 ./kryten/reports/reportB 33 ./kryten/reports/reportC # |
The following example shows a full backup of a local /export/home file system on a Solaris 8 system to a tape device on a remote Solaris 8 system called starbug.
# ufsdump 0ucf starbug:/dev/rmt/0 /export/home DUMP: Writing 63 Kilobyte records DUMP: Date of this level 0 dump: Tue Jul 13 13:14:40 1999 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping /dev/rdsk/c0t3d0s7 (mars:/export/home) to starbug:/dev/rmt/0 DUMP: Mapping (Pass I) [regular files] DUMP: Mapping (Pass II) [directories] DUMP: Estimated 476 blocks (238KB). DUMP: Dumping (Pass III) [directories] DUMP: Dumping (Pass IV) [regular files] DUMP: Tape rewinding DUMP: 376 blocks (188KB) on 1 volume at 21 KB/sec DUMP: DUMP IS DONE DUMP: Level 0 dump on Tue Jul 13 13:14:40 1999 # ufsrestore tf starbug:/dev/rmt/0 2 . 3 ./lost+found 3776 ./kryten 3777 ./kryten/.cshrc 3778 ./kryten/.login 3779 ./kryten/b 3780 ./kryten/memos 7552 ./kryten/letters 7553 ./kryten/letters/b 7554 ./kryten/letters/letter1 7555 ./kryten/letters/letter2 7556 ./kryten/letters/letter3 11328 ./kryten/reports 11329 ./kryten/reports/reportA 11330 ./kryten/reports/reportB 11331 ./kryten/reports/reportC . . . # |
The following example shows a full backup of a local /export/home file system on a Solaris 8 system to a tape device on a remote SunOS 4.1.4 system (mars).
Notice the SunOS 4.x-style device name (/dev/rst0) used with the ufsdump command.
# ufsdump 0ucf mars:/dev/rst0 /export/home DUMP: Writing 63 Kilobyte records DUMP: Date of this level 0 dump: Thu Jul 15 09:13:01 1999 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping /dev/rdsk/c0t0d0s7 (starbug:/export/home) to mars:/dev/rst0. DUMP: Mapping (Pass I) [regular files] DUMP: Mapping (Pass II) [directories] DUMP: Estimated 5690 blocks (2.78MB). DUMP: Dumping (Pass III) [directories] DUMP: Dumping (Pass IV) [regular files] DUMP: Tape rewinding DUMP: 5542 blocks (2.71MB) on 1 volume at 77 KB/sec DUMP: DUMP IS DONE DUMP: Level 0 dump on Thu Jul 15 09:13:01 1999 # ufsrestore tf mars:/dev/rst0 2 . 3 ./lost+found 2688 ./kryten 5409 ./kryten/letters 5410 ./kryten/letters/letter1 5411 ./kryten/letters/letter2 5412 ./kryten/letters/letter3 2689 ./kryten/.profile 8096 ./kryten/memos 30 ./kryten/reports 31 ./kryten/reports/reportA 32 ./kryten/reports/reportB 33 ./kryten/reports/reportC . . . # |
The following example shows a full backup of a local root (/) file system on a Sun 4.1.4 system (mars) to a remote tape device on a Solaris 8 system called starbug.
When you back up data on a system running SunOS 4.1.4 or a compatible version, you must use the dump command--not the ufsdump command.
# dump 0ucf starbug:/dev/rmt/0 / DUMP: Date of this level 0 dump: Wed Jul 7 06:19:33 1999 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping /dev/rsd0a (/) to /dev/rmt/0 on host starbug DUMP: mapping (Pass I) [regular files] DUMP: mapping (Pass II) [directories] DUMP: estimated 123706 blocks (60.40MB) on 1.41 tape(s). DUMP: dumping (Pass III) [directories] DUMP: dumping (Pass IV) [regular files] DUMP: level 0 dump on Wed Jul 7 06:19:33 1999 DUMP: Tape rewinding DUMP: 123680 blocks (60.39MB) on 2 volumes DUMP: DUMP IS DONE # restore tf starbug:/dev/rmt/0 2 . 3 ./lost+found 3776 ./export 7552 ./home 11328 ./usr 15104 ./pcfs 3777 ./tftpboot 3778 ./tftpboot/tftpboot 3794 ./tftpboot/boot.sun4c.sunos.4.1.4 7553 ./etc 7554 ./etc/sendmail.cf 7555 ./etc/aliases 7556 ./etc/aliases.dir 7557 ./etc/aliases.pag 7558 ./etc/holidays 7559 ./etc/dumpdates . . . # |