In a PowerPath only environment , the PowerPath install and admin guide has the following rules:
semsys:seminfo_semmns
PowerPath alone needs a value of 257. Therefore, the installation adds at least 257 to the current value in /etc/system:
- If the current value in /etc/system is greater than 60, the PowerPath installation adds 257.
- If the current value in /etc/system is less than or equal to 60, the installation adds 317 to allow room for expansion.
- If the value of semsys:seminfo_semmns is not set in /etc/system, the PowerPath installation sets the value at 317.
semsys:seminfo_semmni
PowerPath alone needs a value of 2. Therefore, the installation adds at least 2 to the current value in /etc/system:
- If the current value in /etc/system is greater than 10, the PowerPath installation adds 2.
- If the current value in /etc/system and is less than or equal to 10, the installation adds 12.
- If the value of semsys:seminfo_semmni is not set in /etc/system, the PowerPath installation sets the value at 12.
semsys:seminfo_semmsl
The maximum value allowed for this semaphore is 129. The PowerPath installation changes this value as follows:
- If the current value in /etc/system is 129, it is not reset.
- If the current value in /etc/system is less than 129, it is set to 129.
- If the value of semsys:seminfo_semmsl is not set in /etc/system, it is set to 129.
semsys:seminfo_semmap
semsys:seminfo_semmap is set to the largest value of semsys:seminfo_semmns found in /etc/system, or to 317 if semsys:seminfo_semmns is not in /etc/system.
semsys:seminfo_semmnu
semsys:seminfo_semmnu is set to the largest value of semsys:seminfo_semmns found in /etc/system, or to 317 if semsys:seminfo_semmns is not in /etc/system.
Example:
set semsys:seminfo_semmns=0x13d
set semsys:seminfo_semmni=0xc
set semsys:seminfo_semmsl=0x81
set semsys:seminfo_semmap=0x13d
set semsys:seminfo_semmnu=0x13d
For Solutions Enabler only environment, setttings are as follows:
(Taken from Solutions Enabler Install guide)
set semsys:seminfo_semmni=600
set semsys:seminfo_semmns=600
set semsys:seminfo_semume=600
set semsys:seminfo_semmnu=600
set shmsys:shminfo_shmmni=600
Again these values should be added to whatever the value is already set at.
For PowerPath and Solutions Enabler environments:
Add the values together; for example from above, seminfo_semmns (600 DEC + 0x13d HEX) = 0x395
Example settings (assuming values from above
set semsys:seminfo_semmni=0x264
set semsys:seminfo_semume=600
set semsys:seminfo_semmnu=0x395
set semsys:seminfo_semmni=0x264
set semsys:seminfo_semmap=0x13d
set semsys:seminfo_semmns=0x395
NOTE: The system will need to be rebooted for changes to take effect
Cheers Novelli
Novell Master CNE + CDE
EMC Networker LCNS