gfs2_fsck(8)gfs2_fsck(8)NAMEgfs2_fsck - Offline GFS2 file system checker
SYNOPSISgfs2_fsck [OPTION]... DEVICE
WARNING
All GFS2 nodes must have the GFS2 filesystem unmounted before running
gfs2_fsck. Failure to unmount all nodes may result in filesystem cor‐
ruption.
DESCRIPTIONgfs2_fsck will check that the GFS2 file system on a device is struc‐
turally valid. It should not be run on a mounted file system. If file
system corruption is detected, it will attempt to repair the file sys‐
tem. There is a limit to what gfs2_fsck can do. If important file
system structures are destroyed, such that the checker cannot determine
what the repairs should be, reparations could fail.
GFS2 is a journaled file system, and as such should be able to repair
damages to the file system on its own. However, faulty hardware has
the ability to write incomplete blocks to a file system thereby causing
corruption that GFS2 cannot fix. The first step to ensuring a healthy
file system is the selection of reliable hardware (i.e. storage systems
that will write complete blocks - even in the event of power failure).
OPTIONS-h Help.
This prints out the proper command line usage syntax.
-q Quiet.
-n No to all questions.
By specifying this option, gfs2_fsck will only show the changes
that would be made, but not make any changes to the filesystem.
-V Version.
Print out the program version information.
-v Verbose operation.
Print more information while running.
-y Yes to all questions.
By specifying this option, gfs2_fsck will not prompt before mak‐
ing changes.
gfs2_fsck(8)
