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System Administration Guide: Advanced Administration     Oracle Solaris 10 8/11 Information Library
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Document Information

About This Book

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)

What's New in Managing System Crash Information

Fast Crash Dump Facility

Managing System Crash Information (Task Map)

System Crashes (Overview)

Oracle Solaris ZFS Support for Swap Area and Dump Devices

x86: System Crashes in the GRUB Boot Environment

System Crash Dump Files

Saving Crash Dumps

The dumpadm Command

How the dumpadm Command Works

Dump Devices and Volume Managers

Managing System Crash Dump Information

How to Display the Current Crash Dump Configuration

How to Modify a Crash Dump Configuration

How to Examine a Crash Dump

How to Recover From a Full Crash Dump Directory (Optional)

How to Disable or Enable Saving Crash Dumps

18.  Troubleshooting Miscellaneous Software Problems (Tasks)

19.  Troubleshooting File Access Problems (Tasks)

20.  Resolving UFS File System Inconsistencies (Tasks)

21.  Troubleshooting Software Package Problems (Tasks)


What's New in Managing System Crash Information

This section describes new or changed features for managing system resources in this Oracle Solaris release.

Fast Crash Dump Facility

Oracle Solaris 10 9/10: This feature enhancement enables the system to save crash dumps in less time, using less space. The time that is required for a crash dump to complete is now 2 to 10 times faster, depending on the platform. The amount of disk space that is required to save crash dumps in the savecore directory is reduced by the same factors. To accelerate the creation and compression of the crash dump file, the fast crash dump facility utilizes lightly used CPUs on large systems. A new crash dump file, vmdump.n, is a compressed version of the vmcore.n and unix.n files. Compressed crash dumps can be moved over the network more quickly and then analyzed off-site. Note that the dump file must first be uncompressed to use it with tools like the mdb utility. You can uncompress a dump file by using the savecore command, either locally or remotely.

To support the new crash dump facility, the -z option has been added to the dumpadm command. Use this option to specify whether to save dumps in a compressed or an uncompressed format. The default format is compressed.

For more detailed information, see the dumpadm(1M) and the savecore(1M) man pages.