core dump
when trying to load the block driver, the system crashed and gave a core dump.
use dumpadm to show where the dump file is,
-bash-3.00# dumpadm
Dump content: kernel pages
Dump device: /dev/dsk/c0d0s1 (swap)
Savecore directory: /var/crash/sunhost
Savecore enabled: yes
but on solaris 6 or earlier release, modify /etc/inid.d/syssetup to change the directory.
-bash-3.00# ls -l
total 117202
-rw-r--r-- 1 root root 2 May 16 17:41 bounds
-rw-r--r-- 1 root root 1241958 May 16 17:41 unix.0
-rw-r--r-- 1 root root 58707968 May 16 17:41 vmcore.0
Fortunately, there are some clues in the system log. So no need to do analysis of the dump file.
May 16 17:38:02 jackv genunix: BAD TRAP: type=e (#pf Page fault) rp=d6270c30 addr=c occu
rred in module "block_1" due to a NULL pointer dereference
May 16 17:38:02 jackv unix:
May 16 17:38:02 jackv unix: sched:
May 16 17:38:02 jackv unix: #pf Page fault
May 16 17:38:02 jackv unix: Bad kernel fault at addr=0xc
May 16 17:38:02 jackv unix: pid=0, pc=0xfa452482, sp=0xfa4521d0, eflags=0x10286
find the bug in the code. It was a NULL pointer.
本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u1/38597/showart_302708.html
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