GPFS: Administration and Programming Reference - IRA Home

-r Migrates all data off suspended disks. It also restores all replicated files in the file system to their
designated degree of replication when a previous disk failure or removal of a disk has made some
replica data inaccessible. Use this parameter either immediately after a disk failure to protect
replicated data against a subsequent failure, or before taking a disk offline for maintenance to
protect replicated data against failure of another disk during the maintenance process.
Exit status
0 Successful completion.
nonzero A failure has occurred.
Security
You must have root authority to run the mmrestripefile command.
You may issue the mmrestripefile command from any node in the GPFS cluster.
When using the rcp and rsh commands for remote communication, a properly configured .rhosts file must
exist in the root user’s home directory on each node in the GPFS cluster. If you have designated the use
of a different remote communication program on either the mmcrcluster or the mmchcluster command,
you must ensure:
1. Proper authorization is granted to all nodes in the GPFS cluster.
2. The nodes in the GPFS cluster can communicate without the use of a password, and without any
extraneous messages.
Examples
This example illustrates restriping a file named testfile0. This command confirms that testfile0 is illplaced.
mmlsattr -L testfile0
The system displays output similar to:
file name: testfile0
metadata replication: 1 max 2
data replication: 1 max 2
flags: illplaced
storage pool name: sp5
fileset name: root
snapshot name:
To correct the problem, issue this command:
mmrestripefile -p testfile0
To confirm the change, issue this command:
mmlsattr -L testfile0
The system displays output similar to:
file name: testfile0
metadata replication: 1 max 2
data replication: 1 max 2
flags:
storage pool name: sp5
fileset name: root
snapshot name:
mmrestripefile Command
Chapter 8. GPFS commands 253