Listing file system attributes
Use the mmlsfs command to display the current file system attributes. Depending on your configuration, additional information that is set by GPFS can be displayed to help in problem determination when you contact the IBM® Support Center.
If you specify no options with the mmlsfs command, all file system attributes are listed.
mmlsfs gpfs1 flag value description
------------------- ------------------------ -----------------------------------
-f 8192 Minimum fragment (subblock) size in bytes
-i 512 Inode size in bytes
-I 16384 Indirect block size in bytes
-m 1 Default number of metadata replicas
-M 2 Maximum number of metadata replicas
-r 1 Default number of data replicas
-R 2 Maximum number of data replicas
-j cluster Block allocation type
-D nfs4 File locking semantics in effect
-k all ACL semantics in effect
-n 32 Estimated number of nodes that will mount file system
-B 262144 Block size
-Q none Quotas accounting enabled
none Quotas enforced
none Default quotas enabled
--perfileset-quota no Per-fileset quota enforcement
--filesetdf no Fileset df enabled?
-V 25.00 (5.1.1.0) File system version
--create-time Mon Jul 4 22:20:38 2022 File system creation time
-z yes Is DMAPI enabled?
-L 4194304 Logfile size
-E yes Exact mtime mount option
-S relatime Suppress atime mount option
-K whenpossible Strict replica allocation option
--fastea yes Fast external attributes enabled?
--encryption no Encryption enabled?
--inode-limit 879616 Maximum number of inodes in all inode spaces
--log-replicas 0 Number of log replicas
--is4KAligned no is4KAligned?
--rapid-repair yes rapidRepair enabled?
--write-cache-threshold 0 HAWC Threshold (max 65536)
--subblocks-per-full-block 32 Number of subblocks per full block
-P system Disk storage pools in file system
--file-audit-log no File Audit Logging enabled?
--maintenance-mode no Maintenance Mode enabled?
--flush-on-close no flush cache on file close enabled?
--auto-inode-limit no Increase maximum number of inodes per inode space automatically?
--nfs4-owner-write-acl yes NFSv4 implicit owner WRITE_ACL permission enabled?
-d nsd9;nsd10 Disks in file system
-A yes Automatic mount option
-o none Additional mount options
-T /gpfs/gpfs2 Default mount point
--mount-priority 0 Mount prioritySome of the attributes that are displayed by the mmlsfs command represent default mount options. Because the scope of mount options is an individual node, it is possible to have different values on different nodes. For exact mtime (-E option) and suppressed atime (-S option), the information that is displayed by the mmlsfs command represents the current setting on the file system manager node. If these options are changed with the mmchfs command, the change might not be reflected until the file system is remounted.
For complete usage information, see mmlsfs command. For a detailed discussion of file system attributes, see GPFS architecture and File system creation considerations.