Cannot increase dump space

[TMcB]

Following a system crash in which we were unable to store a full core dump due to the swap space not being big enough, we are now trying to increase this.

The swap space currently consists of 2 different logical volumes, each 500MB.
The amount of memory is 2GB so to cover this I created another LV on the same disk of 2GB, but when I try to add it as dump space I get the following error message :

[/]> lvlnboot -d /dev/vg00/vg10
lvlnboot: Unable to configure dump logical volume.
Dump logical volume size beyond the IODC max address.

[/]> lvlnboot -v /dev/vg00
Boot Definitions for Volume Group /dev/vg00:
Physical Volumes belonging in Root Volume Group:
/dev/dsk/c1t6d0 (10/0.6.0) -- Boot Disk
Boot: lvol1 on: /dev/dsk/c1t6d0
Root: lvol3 on: /dev/dsk/c1t6d0
Swap: lvol2 on: /dev/dsk/c1t6d0
Dump: lvol2 on: /dev/dsk/c1t6d0, 0
Dump: lvol4 on: /dev/dsk/c1t6d0, 1

However, in swapinfo, it does appear :
[/]> swapinfo
Kb Kb Kb
TYPE AVAIL USED FREE
dev 524288 0 524288
dev 524288 0 524288
dev 2048000 0 2048000

Any advice would be greatly appreciated.

[Robin Wakefield]

Hi Terry,

man lvlnboot gives the following warning:

At the HP-UX 11.00 release and forward, the lvlnboot command will support any size dump device depending upon the IODC firmware addressability of the system. If the configured dump logical volume is out of the range of what the firmware can address, the lvlnboot command will return an error message such as "Unable to configure dump logical volume. Dump logical volume size beyond the IODC max address."

I don't know the system you're using, but this may help.

Rgds, Robin.

[TMcB]

Thanks

Is there any way of finding out what the maximum supported size for my machine would be.
It is an HP900 K class running 10.20

Would it be possible to try reducing the volume sixe to eg 1.5GB

Thanks

[Robin Wakefield]

Hi Terry,

2Gb is probably going to be your limit, but - (sorry to quote again) man page for 10.20 states:

Dump Volume Warnings
A dump logical volume, or a swap logical volume used as a dump volume, must lie within the first 2 GB (< 2 GB) of the physical volume. The lvlnboot command will not allow a dump logical volume to be configured that crosses the 2 GB boundary, but it will allow such a swap logical volume to be configured.

For a system with high-density memory boards installed, lvlnboot will be able to support dump logical volumes up to 4 GB of the physical volume.

If the swap device is used as a dump volume by specifying the dump default in the system file (see config(1M)), care should be taken to ensure that the swap logical volume does not exceed the 2 GB boundary (or 4 GB for the system as mentioned above).

Rgds, Robin.

[TMcB]

Hi Robin

Apologies, but I still can't get my head around this.
Does this mean that because I already have 1GB dump space, I can only add another one if it is less than 1GB?
Or does it mean that I can create a third one as long as it is less than 2GB.

[Robin Wakefield]

Hi Terry,

You can create as many as you like, as long as each dump lvol lies within the first 2Gb of the pv. I have a system with 1Gb on one disk and 2Gb on another.

Rgds, Robin.