Provided by: gfs-tools_1.20060222-0ubuntu5_i386 bug

NAME

       gfs_fsck - Offline GFS file system checker

SYNOPSIS

       gfs_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
       corruption.

DESCRIPTION

       gfs_fsck   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 gfs_fsck 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).

OPTIONS

       -h     Help.

              This prints out the proper command line usage syntax.

       -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.

       -q     Quiet.

       -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
              making changes.

                                                                   gfs_fsck(8)