From: Kjell Andresen (kjell.andresen@usit.uio.no)
Date: Wed May 01 2002 - 16:06:24 EDT
My original question in short:
I believe Tru64 supports uids above 2^16, but would be happy to find any
documentation to this topic! .. There is match also in
<URL:http://www.ornl.gov/its/archives/mailing-lists/tru64-unix-managers/2000/07/msg00040.html>
stating there is a variable MAXUID set to 65535.
We're running different versions in both v4.0x and v5.y-series,
but is upgrading to v4.0G/v5.1A both supporting extended uids, see
below.
If you are using nis and uids above 2^16 any experiences are welcome in
my mailbox!
Thanks to:
Martin Moore <martin@decatl.alf.cpqcorp.net>:
In V5.0 and up, it's (UINT_MAX - 2), i.e., about 4 billion.
In V4, it was lower (65535 for a long time, then in later versions of
the 4.0x stream, you could get it to about 262,000 with some work.)
-and Chris Ruhnke <ruhnke@us.ibm.com>:
You don't mention what version of Tru64 you are running.
In V4.x, at least, there is a sysconfig parameter in the "proc" stanza
called "enable_extended_uids".
Set this parameter to "1" and you wil be able to use 32-bit UIDs.
This is a dynamic parameter and can be set using dxkerneltuner.
Once it has been set to 1 though, it can only be reset to 0 via a reboot.
-and Heinz-Hermann Adam <adamh@nwz.uni-muenster.de>:
Tru64 Unix Systemadministration for 4.0f (didn't check for 5.X):
9.1.4 UIDs and GIDs
"[...]The maximum number of UIDs and GIDs is 2,147,483,647 (31 bits).[...]"
This assumes you have the enable_extented_uids variable set to '1' via
dxkerneltuner or sysconfig.
-and Chris G. Sellers <sellers@oakland.edu>:
It does, and versions 4.0F and above I believe do it natively, but
versions 4.0F and below need a hack to make them work. I don't know
where the documentation is, but you are not on a wild goose chase.
-and Strange Keith - kstran <Keith.Strange@acxiom.com>
What version of unix ? 5.1 and above support 2^32, I believe 4.X is
actually limit to 65536.....
I will see if I still have the documentation.....
Regards,
Kjell Andresen Systems administrator, University of Oslo, Norway
Center for Information Technology Services and
Department of Geophysics
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