IBM Elastic Storage System 3000, Service Manual

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7. Configure GPFS page pool size to the 60% target.
8. Restore GPFS normal operational mode.
9. Mount one or more file systems that are designated to the target ESS 3000.
10. Resume I/O.
• Customer tasks are steps 1 - 3.
• SSR tasks are steps 4 - 6.
• Customer tasks are steps 7 - 10.
Summary
The goal of this procedure is to add additional memory into each ESS 3000 canister. When the physical
memory is installed, the customer can complete the operation by increasing the GPFS page pool. For
more information, see the Planning for hardware chapter of the IBM Elastic Storage System 3000:
Hardware Planning and Installation Guide.
Offline memory MES procedure
1. Stop all I/O workload that is running on one or more file systems that are mounted on the target ESS
3000 for MES (customer task).
Ensure that all I/O workload is stopped, and do the next step.
2. Turn off the GPFS autoload and automount settings on both server canisters during the MES process
(customer task).
a. Log in as root to each canister and issue the following commands:
1) To get the information about a GPFS cluster, issue the following command:
# mmlscluster
Identify and copy and paste the server node names that are associated with the target ESS
3000 into a note.
2) To get file systems information, issue the following command:
# mmvdisk fs list
Identify and copy and paste one or more file system names that are associated with the target
ESS 3000 into a note.
3) To unmount one or more file systems, issue the following command:
# mmumount <filesystem name> -a
4) Turn off the GPFS automount by issuing the following command:
# mmchfs <filesystem> -A no
5) Turn off the GPFS autoload by issuing the following command:
# mmchconfig autoload=no
6) Confirm that one or more target file systems are no longer mounted by issuing either of the
following command:
# df -h
# mslsmount
When you issue one of these commands, the file systems must not be displayed in the output.
36 IBM Elastic Storage System 3000: Service Guide