Abstract: tunables that are occasionally required on the AIX NIM master
1) To support a high number (16 or more) simultaneous installs, you should consider:
2) no options tcp_sendspace, tcp_recvspace, rfc1323 should already be set in the default AIX install. Watch for them on ifconfig -a, and verify that use_isno is on.
inet 220.127.116.11 netmask 0xffffff00 broadcast 18.104.22.168
tcp_sendspace 262144 tcp_recvspace 262144 rfc1323 1
# no -a | grep isno
use_isno = 1
# no -F -a | grep isno (restricted setting in 6.1. Use -F)
use_isno = 1
3) Consider setting global_export=yes. If you perform frequent simultaneous installs, when one install completes, the default behavior of the master is to unexport NFS exports, remove the completed client from the export lists and re-export the filesystems. During this interval, other "in-flight" client installs may see the message "NFS server not responding, still trying" on the client console.
As an alternative, set global_export. With no clients enabled for install:
In this configuration, resources are exported read-only for every enabled client, and held exported until the last client completes.
Before, exports list every specific client allowed to mount
export list for bmark29:
With global_export, exports are read-only for everyone
Realize, of course, anyone can mount these, even if they are not a NIM client
(read-only, AIX install content. Security issue? Probably not for most cases)