gfs_fsck(8)gfs_fsck(8)NAMEgfs_fsck - Offline GFS file system checker
SYNOPSISgfs_fsck [OPTION]... DEVICE
WARNING
All GFS nodes must have the GFS filesystem unmounted before running
gfs_fsck. Failure to unmount all nodes may result in filesystem cor‐
ruption.
DESCRIPTIONgfs_fsck will check that the GFS 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 gfs_fsck can do. If important file sys‐
tem structures are destroyed, such that the checker can not determine
what the repairs should be, reparations could fail.
GFS 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 GFS can not 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, gfs_fsck will only show the changes
that would be made, not make any changes to the filesystem.
-V Version.
Print out the current version name.
-v Verbose operation.
Print more information while running.
-y Yes to all questions.
By specifying this option, gfs_fsck will not prompt before mak‐
ing changes.
gfs_fsck(8)
