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System Administration Guide: Advanced Administration
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Document Information


1.  Managing Terminals and Modems (Overview)

2.  Setting Up Terminals and Modems (Tasks)

3.  Managing Serial Ports With the Service Access Facility (Tasks)

4.  Managing System Resources (Overview)

5.  Displaying and Changing System Information (Tasks)

6.  Managing Disk Use (Tasks)

7.  Managing UFS Quotas (Tasks)

8.  Scheduling System Tasks (Tasks)

9.  Managing System Accounting (Tasks)

10.  System Accounting (Reference)

11.  Managing System Performance (Overview)

12.  Managing System Processes (Tasks)

13.  Monitoring System Performance (Tasks)

14.  Troubleshooting Software Problems (Overview)

15.  Managing System Messages

16.  Managing Core Files (Tasks)

17.  Managing System Crash Information (Tasks)

18.  Troubleshooting Miscellaneous Software Problems (Tasks)

What to Do If Rebooting Fails

What to Do If You Forgot the Root Password

x86: What to Do If the SMF Boot Archive Service Fails During a System Reboot

What to Do If a System Hangs

What to Do If a File System Fills Up

File System Fills Up Because a Large File or Directory Was Created

A TMPFS File System is Full Because the System Ran Out of Memory

What to Do If File ACLs Are Lost After Copy or Restore

Troubleshooting Backup Problems

The root (/) File System Fills Up After You Back Up a File System

Make Sure the Backup and Restore Commands Match

Check to Make Sure You Have the Right Current Directory

Interactive Commands

Troubleshooting Common Agent Container Problems in the Oracle Solaris OS

Port Number Conflicts

How to Check Port Numbers

Compromised Security for Superuser Password

How to Generate Security Keys for the Oracle Solaris OS

19.  Troubleshooting File Access Problems (Tasks)

20.  Resolving UFS File System Inconsistencies (Tasks)

21.  Troubleshooting Software Package Problems (Tasks)


Troubleshooting Backup Problems

This section describes some basic troubleshooting techniques to use when backing up and restoring data.

The root (/) File System Fills Up After You Back Up a File System

You back up a file system, and the root (/) file system fills up. Nothing is written to the media, and the ufsdump command prompts you to insert the second volume of media.

Reason Error Occurred
How to Fix the Problem
If you used an invalid destination device name with the -f option, the ufsdump command wrote to a file in the /dev directory of the root (/) file system, filling it up. For example, if you typed /dev/rmt/st0 instead of /dev/rmt/0, the backup file /dev/rmt/st0 was created on the disk rather than being sent to the tape drive.
Use the ls -tl command in the /dev directory to identify which file is newly created and abnormally large, and remove it.

Make Sure the Backup and Restore Commands Match

You can only use the ufsrestore command to restore files backed up with the ufsdump command. If you back up with the tar command, restore with the tar command. If you use the ufsrestore command to restore a tape that was written with another command, an error message tells you that the tape is not in ufsdump format.

Check to Make Sure You Have the Right Current Directory

It is easy to restore files to the wrong location. Because the ufsdump command always copies files with full path names relative to the root of the file system, you should usually change to the root directory of the file system before running the ufsrestore command. If you change to a lower-level directory, after you restore the files you will see a complete file tree created under that directory.

Interactive Commands

When you use the interactive command, a ufsrestore> prompt is displayed, as shown in this example:

# ufsrestore ivf /dev/rmt/0
Verify volume and initialize maps
Media block size is 126
Dump   date: Fri Jan 30 10:13:46 2004
Dumped from: the epoch
Level 0 dump of /export/home on starbug:/dev/dsk/c0t0d0s7
Label: none
Extract directories from tape
Initialize symbol table.
ufsrestore >