SUN Solaris File System backup and recovery (ufsdump Ufsrestore)

1. Specify Tape characteristics

When you do not specify any tape attributes, the Ufsdump command uses a collection of default values. You can specify the cartridge (-c), density (-D), size (-s), and number of tracks (-T). Note You can specify options in any order, as long as the corresponding parameters are in the same order.

2. Use OIC-150 to back up the file system

To perform a full backup of the file system, the user must exit the login and the system must enter Single-user mode. Add Remote-host before the tape device name: You can back up or restore files from a remote drive.

Remote-host:/dev/rmt/unit

For example, the remote tape device is named/dev/rmt/0 and is oak:/dev/rmt/0 on the system oak

Cases:

The following steps complete a 0-level backup of the file system:

1 Enter init s to enter Single-user mode.

2) Insert the tape.

3) Input Ufsdump 0CUF/DEV/RMT/UNIT/DEV/RDSK/CNTNDNS0

where 0 represents a level 0 (full) backup, C indicates a cartridge, and U indicates that the update backup record, F, and subsequent device names specify the device file. Enter the original platter where you want to back up the file system.

4 If a backup requires more than one tape, the Ufsdump command notifies when the tape is replaced.

5 make a label on a tape that has a command, file system, and date.

Incremental backups

1 The system enters Single-user mode.

2 Become superuser.

3 Insert the tape in the tape drive.

4) input Ufsdump [1-9]UCF/DEV/RMT/UNIT/DEV/RDSK/CNTNDNSN

5 Remove the tape from the tape drive and label it.