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Add cli_chgrpmem command in order to add/remove 1,000+ users to/from a group
The current PowerHA release does not allow to add a group with 1000+ ID (verified with 1023 and 1246 IDs): doing so, CSPOC produces "Command is too long" error. Increasing CSPOC internal buffer to 32K does not help (debug iFix "dbg40041_a" was tested). Such capability is required while adding a new group and the most of the existing IDs in PowerHA env. are required to be the members of that new group. Because the group membership for each ID is strictly individual (we have dozens of groups ...) it is not easy to craft a simple command to change the group membership for all user IDs - we have to modify the group list for each particular user ID via "cl_chuser" command on per-user basis. Pls note that, PowerHA does not have cli_chuser command, therefore this is out of CSPOC, while doing that via SMIT HACMP i-face is not possible for so many user IDs. Because PowerHA dev team was not able to craft "cl_mkgrp" which can process 1,200+ IDs (the debug iFix produces the same "Command too long" error above), the debug fix "dbg540041" was released to add "cli_chgrpmem" command into a list of CSPOC commands: it helps to add (and delete) as many IDs as needed into the existing group via a simple 1-liner. "dbg540041" iFix was installed and "cli_chgrpmem" command was tested and verified to work. Now need this to be incorporated into the next PowerHA 7.2 Service Pack and have that command available upon updating to any subsequent PowerHA release and TL/SP.
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