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System Administration Guide: Devices and File Systems Oracle Solaris 10 8/11 Information Library |
1. Managing Removable Media (Overview)
2. Managing Removable Media (Tasks)
3. Accessing Removable Media (Tasks)
4. Writing CDs and DVDs (Tasks)
5. Managing Devices (Overview/Tasks)
6. Dynamically Configuring Devices (Tasks)
7. Using USB Devices (Overview)
9. Using InfiniBand Devices (Overview/Tasks)
11. Administering Disks (Tasks)
12. SPARC: Setting Up Disks (Tasks)
13. x86: Setting Up Disks (Tasks)
14. Configuring Oracle Solaris iSCSI Targets and Initiators (Tasks)
15. The format Utility (Reference)
16. Managing File Systems (Overview)
17. Creating and Mounting File Systems (Tasks)
18. Using The CacheFS File System (Tasks)
19. Configuring Additional Swap Space (Tasks)
20. Checking UFS File System Consistency (Tasks)
21. UFS File System (Reference)
22. Backing Up and Restoring UFS File Systems (Overview)
23. Backing Up UFS Files and File Systems (Tasks)
Backing Up UFS Files and File System (Task Map)
Preparing for File System Backups
How to Find UFS File System Names
How to Determine the Number of Tapes Needed for a Full Backup
How to Back Up a UFS File System to Tape
24. Using UFS Snapshots (Tasks)
25. Restoring UFS Files and File Systems (Tasks)
26. UFS Backup and Restore Commands (Reference)
27. Copying Files and File Systems (Tasks)
The preparation for backing up file systems begins with planning, which is described in Chapter 22, Backing Up and Restoring UFS File Systems (Overview) and includes choosing the following:
The file systems to back up
The type of backup (full or incremental) to perform
A backup schedule
A tape drive
For more information, see Chapter 22, Backing Up and Restoring UFS File Systems (Overview).
This section describes two other tasks you might need to perform before you back up file systems:
Finding the names of file systems to back up
Determining the number of tapes that are needed for a full backup
$ more /etc/vfstab
Example 23-1 Finding File System Names
In this example, the file systems to be backed up are root (/), /usr, and and /export/home.
# more /etc/vfstab #device device mount FS fsck mount mount #to mount to fsck point type pass at boot options # fd - /dev/fd fd - no - /proc - /proc proc - no - /dev/dsk/c0t0d0s1 - - swap - no - /dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0 / ufs 1 no - /dev/dsk/c0t0d0s6 /dev/rdsk/c0t0d0s6 /usr ufs 1 no - /dev/dsk/c0t0d0s7 /dev/rdsk/c0t0d0s7 /export/home ufs 2 yes - /devices - /devices devfs - no - sharefs - /etc/dfs/sharetab sharefs - no - ctfs - /system/contract ctfs - no - objfs - /system/object objfs - no - swap - /tmp tmpfs - yes -
# ufsdump [0]S file-system
Use the S option to display the estimated number of bytes that are needed to do the backup if this is the first backup of the file system.
Use the 0S option to display the estimated number of bytes that are needed to do the backup if this is not the first backup of the file system.
For a list of tape capacities, see Table 22-5.
Example 23-2 Determining the Number of Tapes
In this example, the file system easily fits on a 150-MB tape.
# ufsdump S /export/home 178176