[buaa_kyle]

Hi, I'm useing AIX v5.3 and I want to adjust the no parameters by appending relavent commands in the /etc/rc.net file, but it did not work, and I found the reason is what the comments in the /etc/rc.net file claming:

################################################## ############# ###
# NOTE: The no option enable/disable in rc.net only works on pre
# 5.2 systems.
# On systems 5.2 or higher in order to enable/disable
# specific no options on future reboots this information has
# to be present in the /etc/tunables/nextboot file. This can
# be done by using no -r -o <no_optionname>=<value> on the command
# line. On subsequent reboots the the specified no_optionname value
# will be maintained since it will be written to the nextboot file
# To summarize a no option can be set as follows to be enabled
# on future reboots
# Pre 5.2 Systems:
# no -o arptab_size=10
# 5.2 and later:
# use no -r -o arptab_size=10; this creates an entry in the
# nextboot file and preserves the value on subsequent reboots
################################################## ################

but I'm still wondering how it functions: after AIX v5.2, during the 2nd boot phrase, when the command cfgmgr loads the file /etc/rc.net , reads line by line, performs appropriate actions, it just ignore any no command in this file, right?

any clue would be appreciated

[cdelgadop]

Hi

AIX 5L has a different way to do these kind of tuning, it uses the contents of the files in /etc/tunables directory. You can change these settings from smitty panels by issuing the following smitty fastpath:


smitty "TunNo"

From this panel you can list the current settings, change them in the current OS instance, save the current settings so they survive next boot, and so on. Please select the second option:

Change / Show Current Parameters

and change parameters at will. Check any change and if everything is OK then you can use the option "Save Current Parameters for Next Boot".

Hope this helps

[buaa_kyle]

Originally Posted by cdelgadop

Hi

AIX 5L has a different way to do these kind of tuning, it uses the contents of the files in /etc/tunables directory. You can change these settings from smitty panels by issuing the following smitty fastpath:


smitty "TunNo"

From this panel you can list the current settings, change them in the current OS instance, save the current settings so they survive next boot, and so on. Please select the second option:

Change / Show Current Parameters

and change parameters at will. Check any change and if everything is OK then you can use the option "Save Current Parameters for Next Boot".

Hope this helps

hi cdelgadop, thanks for your nice help