Use this procedure to force a crash dump of a SPARC based system. The example that follows this procedure shows how to use the halt –d command to force a crash dump of the system. You will need to manually reboot the system after running this command.
> n ok sync
After the crash dump is written to disk, the system will continue to reboot.
The login prompt is displayed when the boot process has finished successfully.
hostname console login:
This example shows how to force a crash dump and reboot of a SPARC based system by using the halt –d command.
# halt -d Jul 21 14:13:37 jupiter halt: halted by root panic[cpu0]/thread=30001193b20: forced crash dump initiated at user request 000002a1008f7860 genunix:kadmin+438 (b4, 0, 0, 0, 5, 0) %l0-3: 0000000000000000 0000000000000000 0000000000000004 0000000000000004 %l4-7: 00000000000003cc 0000000000000010 0000000000000004 0000000000000004 000002a1008f7920 genunix:uadmin+110 (5, 0, 0, 6d7000, ff00, 4) %l0-3: 0000030002216938 0000000000000000 0000000000000001 0000004237922872 %l4-7: 000000423791e770 0000000000004102 0000030000449308 0000000000000005 syncing file systems... 1 1 done dumping to /dev/dsk/c0t0d0s1, offset 107413504, content: kernel 100% done: 5339 pages dumped, compression ratio 2.68, dump succeeded Program terminated ok boot Resetting ... . . Rebooting with command: boot Boot device: /pci@1f,0/pci@1,1/ide@3/disk@0,0:a File and args: kernel/sparcv9/unix configuring IPv4 interfaces: hme0. add net default: gateway 198.51.100.240 Hostname: jupiter The system is coming up. Please wait. NIS domain name is example.com . . . System dump time: Wed Jul 21 14:13:41 2013 Jul 21 14:15:23 jupiter savecore: saving system crash dump in /var/crash/jupiter/*.0 Constructing namelist /var/crash/jupiter/unix.0 Constructing corefile /var/crash/jupiter/vmcore.0 100% done: 5339 of 5339 pages saved . . .