The dumpadm Command
The /usr/sbin/dumpadm command manages a system's crash dump configuration parameters. The following table describes dumpadm's configuration parameters.
|
Dump Parameter |
Description |
|---|---|
|
dump device |
The device that stores dump data temporarily as the system crashes. When the dump device is not the swap area, savecore runs in the background, which speeds up the boot process. |
|
savecore directory |
The directory that stores system crash dump files. |
|
dump content |
Type of data, kernel memory or all of memory, to dump. |
|
minimum free space |
Minimum amount of free space required in the savecore directory after saving crash dump files. If no minimum free space has been configured, the default is one megabyte. |
See dumpadm(1M) for more information.
The dump configuration parameters managed by the dumpadm command are stored in the /etc/dumpadm.conf file.
Note -
Do not /etc/dumpadm.conf edit manually. This could result in an inconsistent system dump configuration.
How the dumpadm Command Works
During system startup, the dumpadm command is invoked by the /etc/init.d/savecore script to configure crash dumps parameters based on information in the /etc/dumpadm.conf file.
Specifically, it initializes the dump device and the dump content through the /dev/dump interface.
After the dump configuration is complete, the savecore script looks for the location of the crash dump file directory by parsing the content of /etc/dumpadm.conf file. Then, savecore is invoked to check for crash dumps. It will also check the content of the minfree file in the crash dump directory.
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