GPFS: Administration and Programming Reference - IRA Home

mmlsfs Command
-o Additional mount options
-P Storage pools defined within the file system.
-Q Which quotas are currently enforced on the file system
-R Maximum number of data replicas
-r Default number of data replicas
-s Stripe method
-S Whether the updating of atime is suppressed for the gpfs_stat(), gpfs_fstat(), stat(), and fstat()
calls
-T Default mount point
-u Whether support for large LUNs is enabled
-V Current format version of the file system
-z DMAPI is enabled for this file system
Exit status
0 Successful completion.
nonzero A failure has occurred.
Security
If you are a root user:
1. You may issue the mmlsfs command from any node in the GPFS cluster.
2. 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:
a. Proper authorization is granted to all nodes in the GPFS cluster.
b. The nodes in the GPFS cluster can communicate without the use of a password, and without any
extraneous messages.
3. As root, a user can also issue the mmlsfs on remote file systems.
If you are a non-root user, you may specify only file systems that belong to the same cluster as the node
on which the mmlsfs command was issued.
Examples
If you issue the mmlsfs command with no options for the file system gpfs1:
mmlsfs gpfs1
The system displays information similar to this. Output appears in the order the option were specified in
the command.
flag value description
---- -------------- ------------------------------------------------
-s roundRobin Stripe method
-f 8192 Minimum fragment size in bytes
-i 512 Inode size in bytes
-I 16384 Indirect block size in bytes
-m 1 Default number of metadata replicas
-M 1 Maximum number of metadata replicas
-r 1 Default number of data replicas
-R 1 Maximum number of data replicas
210 GPFS: Administration and Programming Reference