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       fsck.gfs - Offline GFS file system checker


       fsck.gfs [OPTION]... DEVICE


       All  GFS  nodes  must  have the GFS filesystem unmounted before running
       fsck.gfs.  Failure to  unmount  all  nodes  may  result  in  filesystem


       fsck.gfs   will  check  that  the  GFS  file  system  on  a  device  is
       structurally valid.  It should not be run on a mounted file system.  If
       file  system corruption is detected, it will attempt to repair the file
       system.  There is a limit to what fsck.gfs can do.  If  important  file
       system  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).


       -h     Help.

              This prints out the proper command line usage syntax.

       -q     Quiet.

       -n     No to all questions.

              By specifying this option, fsck.gfs 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,  fsck.gfs  will  not prompt before
              making changes.