02-10-2007
"doesn't work!!" is not much of an error report. Assuming that the kernel loads but cannot initialize, yes you need a new kernel. But how to test it? You would be building a kernel on the 132. Then you transfer the disk to the 180 and try it. Didn't work? Then put the disk back on the 132 and try again. If these boxes are in different cities, it won't take long to consume 3 days this way.
I never used a visualize. But I used hp-ux on many different boxes. I never needed a new kernel when I upgraded a cpu or memory. Also how to build a kernel changes from release to release. But sam should always know how. If the boxes need incompatible kernels, it may not be easy to coax the 132 into building a kernel for the 180.
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kvar(8) System Manager's Manual kvar(8)
Name
kvar - modify RISC kernel variables in memory or on disk
Syntax
/usr/etc/kvar -r(b|w|l) [options] vmunix
/usr/etc/kvar -w(b|w|l) [options] vmunix
Description
The command allows you to read or write RISC kernel variables, either in the on-disk image of or the active in-memory image. The -r form
of the command does variable reads; the -w form does variable writes. The variable length qualifiers are: b (1 byte), w (word, or 2
bytes), and l (longword, or 4 bytes).
Variable contents are displayed in hexadecimal format.
Options
-a address Specifies the address of the kernel variable. Either the -a or -s option must be specified. The address is specified as
either a positive decimal or hexadecimal constant.
-k Instructs to use the in-memory image of The default is to use the on-disk copy.
-l Searches for a local symbol. The default is a global symbol search.
-o offset Adds an offset to the address (or address of the symbol name). The offset value is specified as either a positive decimal or
hexadecimal constant.
-s name Specifies the name of the kernel variable.
-v value Specifies the new value to be assigned by the -w form of The -v option is ignored if the -r form of is being used. The value
is specified as either a positive decimal or hexadecimal constant.
Restrictions
You must have appropriate file access permissions for (and for with the -k option).
The command is available only on RISC systems. For VAX systems, use to modify kernel variables.
Examples
This example reads the variable `udpcksum' from the running kernel image:
% kvar -k -rl -s udpcksum /vmunix
This example sets the `xyz' variable to zero in the running kernel image:
% kvar -k -wl -s xyz -v 0 /vmunix
This example sets the variable `xyz' to -1 in the on-disk image of making this value persistent across reboots:
% kvar -wl -s xyz -v 0xffffffff /vmunix
This example sets to zero 1 byte at offset 2 from address 0x80161a98 in the running kernel image:
% kvar -k -wb -o 2 -a 0x80161a98 /vmunix
Files
See Also
adb(1), dbx(1)
RISC kvar(8)