Repairing A File System - Red Hat ENTERPRISE LINUX 4 - GLOBAL FILE SYTEM Manual

The stat flag displays extended status information about a file.
MountPoint
Specifies the file system to which the action applies.
File
Specifies the file from which to get information.
The gfs_tool command provides additional action flags (options) not listed in this section. For more
information about other gfs_tool flags, refer to the gfs_tool man page.
Examples
This example reports extended file system usage about file system /gfs.
gfs_tool df /gfs
This example reports extended file status about file /gfs/datafile.
gfs_tool stat /gfs/datafile

4.12. Repairing a File System

When nodes fail with the file system mounted, file-system journaling allows fast recovery. However,
if a storage device loses power or is physically disconnected, file-system corruption may occur.
(Journaling cannot be used to recover from storage subsystem failures.) When that type of corruption
occurs, you can recover the GFS file system by using the gfs_fsck command.
The gfs_fsck command must only be run on a file system that is unmounted from all nodes.
Note
The gfs_fsck command has changed from previous releases of Red Hat GFS in the
following ways:
• You can no longer set the interactive mode with Ctrl+C. Pressing Ctrl+C now
cancels the gfs_fsck command. Do not press Ctrl+C unless you want to cancel the
command.
• You can increase the level of verbosity by using the -v flag. Adding a second -v flag
increases the level again.
• You can decrease the level of verbosity by using the -q flag. Adding a second -q flag
decreases the level again.
• The -n option opens a file system as read-only and answers no to any queries
automatically. The option provides a way of trying the command to reveal errors without
actually allowing the gfs_fsck command to take effect.
Refer to the gfs_fsck man page, gfs_fsck(8), for additional information about other
command options.
Examples
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