Tuesday, 2 September 2014

AIX7.1 increased number of user groups

Previous versions of AIX allowed a maximum of 128 groups. AIX 7.1 has increased this to 2048
(NGROUPS_MAX). and added a new kernel (sys0) parameter ngroups_allowed.

To check the current limit:

# lsattr -El sys0 -a ngroups_allowed
ngroups_allowed 128 Number of Groups Allowed

To increase it to the limit:

# chdev -l sys0 -a ngroups_allowed=2048
sys0 changed

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