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BasicsFilesets
gpfs.base - GPFS File Manager
gpfs.msg.en_US - GPFS Server Messages - U.S. English
gpfs.docs.data - GPFS Server Manpages and Documentation
Path
GPFS commands are in a separate directory.
Daemons, statusNetwork
Ports 22 (ssh) and 1191 (GPFS) must be open between cluster nodes. SSH can be configured instead of the default rsh via mmchcluster.
LogPV migration
You can consider using the mmrpldisk command for replacing a LUN with another of identical size. See Replacing disks in a GPFS file system
Collect information
Dump/Save current configuration
List active mounts
List storage pools
List disks in each filesystem
List current NSDs (network shared disks)
List filesystem manager node(s)
Show the state of GPFS daemons
- on the local node:
- on all cluster members:
Add new disk(s)
Configure new device
Verify new disk
Edit desc file
The contents of the file is similar to this before GPFS v3.5:
v3.5 utilities will accept the above format, but converting to the the new stanza format is highly recommended.
Configure new disk(s) as NSD
Gpfs Commands
Check NSDs
Add disk to FS using the transformed desc file (mmcrnsd comments out the previous line and inserts a new one)
Think about mmrestripefs
Remove old disk(s)
Task: Migrate data by deleting disks from GPFS
Example: 4x 100GB DS8100 => 1x 400GB XIV, 2x 4Gb adapters, net 250GB data = 27 minutes on an idle system
WARNING: high I/O!
Aix 7 1 Gpfs Base Downloads Download
Reconfigure tiebreakers
Aix 7.1 1 Gpfs Base Download
WARNING: GPFS must be shut down on all nodes!
Aix 7.1 Support
Remove NSD and physical LUN
Record old LUNs for the storage administrator (should they be removed from the zoning)
Delete AIX devices
Delete GPFS filesystem
Where fs is the GPFS filesystem device, as seen in mmlsfs, for example, fs0:
Check for processes using the filesystem
Umount filesystem on all cluster nodes
Delete filesystem
WARNING: Data is destroyed permanently!
(Optional) Remove NSD and disk device - see above
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December 2020
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