How to change the default core dump directory to /tmp?

[MA Qiang]

Thanks.

[Enrico P.]

Hi,

vi /etc/rc.config.d/savecrash

SAVECRASH=1

SAVECRASH_DIR=/tmp

Enrico

[Steven E. Protter]

Shalom,

Core dumps by default are where the program was run.

If they are getting annoying, providing no value or filling up disk drive they can be disabled.

ulimit -Sc 0

SEP

[Mridul Shrivastava]

edit /etc/rc.config.d/savecrash :
SAVECRASH=1
SAVECRASH_DIR= /var/adm/crash <-- This should be large enough to save a full dump.
Its always recommendd to have sufficient space in dump directory (atleast equivalent to physical memory).
Dump space is nothing more than swap space. When a system is running under
normal circumstances the swap space is used as swap but when a system
crashes that same space is then used as a dump area. To determine the
amount of available swap space issue swapinfo.

# swapinfo
Kb Kb Kb PCT START/ RESERVE
TYPE AVAIL USED FREE USED LIMIT kb PRI NAME
dev 524288 24620 499668 5% 0 - 1
/dev/vg00/lvol2
reserve - 251584 -251584
memory 291208 114040 177168 39%

In the example above the only swap space is /dev/vg00/lvol2 with 524288kb

[Bill Hassell · Accepted solution]

As you can see, there are two meanings for the term core dump. The most common is for core files produced by programs. They are called "core" and are always created in the current working directory where the program is running. You cannot redirect the file to another location. If the core dumps are not needed, then use the ulimit command mentioned above just before starting the programs that are crashing and no core dump will be produced at all. Note that in SysV V.4 filesystem layout, the /tmp directory is used for system processes while /var/tmp is the preferred location for user files.

The other core dump is called a system panic and that's where you would edit the crashconf file. Note that /tmp is far too small to hold a carsh dump.

[MA Qiang]

/etc/rc.config.d/savecrash is used for system crash dumps. What about user's core dump file?

[Michael Steele_2]

Its the current working directory but here's a good discussion about it:

http://forums1.itrc.hp.com/service/forums/bizsupport/questionanswer.do?threadId=728058&admit=-682735245+1149515421307+28353475