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| Subject: |
Enhancements to Unix Groups at NERSC |
| Author: |
David Turner <dpturner_at_lbl.gov> |
| Date: |
2004-12-21 13:05:01 |
| Greetings NERSC User,
In the past, a user's default Unix group has tracked their
default repository. For new machines we plan to use "personal"
Unix groups for the default group. Each user will have her/his
personal Unix group; the Unix group name will be the same as
the user's username. More detailed information will be provided
as new machines move into service.
We are first introducing this scheme for HPSS. Starting in
January, all active HPSS users will have a personal Unix group.
Every new user (being added to HPSS for the first time) will have
their default Unix group set to their personal Unix group. They
will also be members of groups that have the same name as the
repos to which they belong.
The user is primarily responsible for files in their HPSS home
directory. When a user leaves NERSC the expectation is that the
user's home directory will *NOT* contain files needed by the project
(either because files s/he is sharing are already in a project
directory, or because s/he has given any project related files to
active project users) and can move to the "crypt" and eventually be
deleted. Note: as users leave a project the Project Managers should
check to see if any files owned by the departing user are needed by
the project and take appropriate measures to keep such files.
Groups that need to share HPSS data, and especially projects that
are creating data repositories in HPSS, should request an HPSS
project directory with its own project Unix group, and store the
shared data there. For more information on HPSS project directories,
please see:
http://www.nersc.gov/nusers/resources/hpss/accounts_projects.php
If you have any questions, please contact NERSC consulting at:
1-800-66-NERSC, menu option 3, 8 am - 5 pm, Pacific time
(510) 486-8600, menu option 3, 8 am - 5 pm, Pacific time
consult@nersc.gov
http://help.nersc.gov/
--
Best regards,
David Turner
User Services Group email: dpturner@lbl.gov
NERSC Division phone: (510) 486-4027
Lawrence Berkeley Lab fax: (510) 486-4316
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