GSD (Global Syncorinization Demone is a dummy service after 10.1 .
This is because iOracle does not want to support any other clusters other that CRS.

But you can still find GSD running

Eg:

Creating VIP application resource on (0) nodes.
Creating GSD application resource on (0) nodes.
Creating ONS application resource on (0) nodes.


Basically GSD is simply a dummy service . gsdctl.sh will call lsnodes in $CRS_HOME/bin.

lsnodes is obselete in 10.2 all because of GSD. in 10.2 we use olsnode

eg:

olsnodes -n nodename


but still you can find lsnodes in $CRS_HOME/bin. this is there just to show GSD service is UP.

lsnodes -n nodename will throw a syntak error ,


Same Script:

####gsdctl.sh

if olsnodes = o

then
......
......
...

return 0
else
return 0

endif;


The If condition will never be true since lsnodes has a syntak error . So the piece of code that executes in gsdctl.sh is just

return(0) from the else condition.


To check this

mv gsdct gsdct.old
touch gsdctl

srvctl start nodeapps -n



Still your cluster will function normal.


Thanks,
Sandarsh