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Subject: |
NERSC File System Outage Wednesday, May 30 |
Author: |
David Turner <dpturner_at_lbl.gov> |
Date: |
2007-05-23 16:49:02 |
Greetings NERSC User,
There will an outage next week that will affect all NERSC compute systems.
This note provides a general overview of the outage; subsequent messages
will provide additional details.
On Wednesday, May 30, at 10:00 AM PDT, the NERSC Global Filesystem (NGF)
will be taken down for a 3-hour maintenance. NGF provides project directories
(/project/projectdirs) to all the compute platforms. In order to take NGF
down "cleanly", we will first need to drain the compute systems of all
running batch jobs. Any interactive processes that are accessing NGF will
then be terminated. After removing NGF from the compute platforms, we will
allow each system to resume scheduling batch jobs that do not require NGF.
Identifying which jobs can safely be started during the NGF outage will probably
require some action on the part of the users. We are still investigating the
best way to accomplish this, and we will notify NERSC users of the procedure
well in advance of the outage.
--
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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