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9.8. Other XFS File System Utilities
Red Hat Enterprise Linux 6 also features other utilities for managing XFS file systems:
Used to defragment mounted XFS file systems. When invoked with no arguments, xfs_fsr defragments all regular files in all mounted XFS file systems. This utility also allows users to suspend a defragmentation at a specified time and resume from where it left off later.
In addition, xfs_fsr also allows the defragmentation of only one file, as in xfs_fsr /path/to/file. Red Hat advises against periodically defragmenting an entire file system, as this is normally not warranted.
Prints the map of disk blocks used by files in an XFS filesystem. This map list each extent used by a specified file, as well as regions in the file with no corresponding blocks (i.e. holes).
Prints XFS file system information.
Changes the parameters of an XFS file system. The xfs_admin utility can only modify parameters of unmounted devices/file systems.
Copies the contents of an entire XFS file system to one or more targets in parallel.
The following utilities are also useful in debugging and analyzing XFS file systems:
Copies XFS file system metadata to a file. The xfs_metadump utility should only be used to copy unmounted, read-only, or frozen/suspended file systems; otherwise, generated dumps could be corrupted or inconsistent.
Restores and XFS metadump image (generated using xfs_metadump) to a file system image.
Debugs an XFS file system.
For more information about these utilities, refer to their respective man pages.