This blog states how to configure Dump device and activate a dump device in HP Unix.
Dump Device refer to an object which plays a vital role during the system crash. On the occurence of a system crash the machine reboots, an image of the system (including hardware and software) will be taken as a dump image and stored in a file system. This information can be used for debugging purpose to analyze the reason for crash.
Steps for configuration:
In HP Unix, by default the paging space is also used as a dump device. "lvol2".
1) The dump device should be a size larger than the size of the RAM.
# dmesg | grep -i physical : Command to get the RAM Size.
2) Create a logical volume of continous allocation and bad block allocation disabled.
# lvcreate -n dump -L 1024 -C y -r n <Volum_Group_Name> : Command to create a logical volume.
3) Assign the created logical volume as a dump device.
# lvlnboot -d /dev/vg_name/lv_name
4) Verify the dump has been assigned.
# lvlnboot -v
Reboot the machine for the dump to get effective.
Dump Device refer to an object which plays a vital role during the system crash. On the occurence of a system crash the machine reboots, an image of the system (including hardware and software) will be taken as a dump image and stored in a file system. This information can be used for debugging purpose to analyze the reason for crash.
Steps for configuration:
In HP Unix, by default the paging space is also used as a dump device. "lvol2".
1) The dump device should be a size larger than the size of the RAM.
# dmesg | grep -i physical : Command to get the RAM Size.
2) Create a logical volume of continous allocation and bad block allocation disabled.
# lvcreate -n dump -L 1024 -C y -r n <Volum_Group_Name> : Command to create a logical volume.
3) Assign the created logical volume as a dump device.
# lvlnboot -d /dev/vg_name/lv_name
4) Verify the dump has been assigned.
# lvlnboot -v
Reboot the machine for the dump to get effective.
