Man Linux: Main Page and Category List


       fsck.ocfs2 - Check an OCFS2 file system.


       fsck.ocfs2  [  -fFGnuvVy  ]  [  -b superblock block ] [ -B block size ]


       fsck.ocfs2 is used to check an OCFS2 file system.

       device is the file where the file system is  stored  (e.g.  /dev/sda1).
       It  will almost always be a device file but a regular file will work as


       -b superblock block
              Normally, fsck.ocfs2 will read the  superblock  from  the  first
              block  of  the device.  This option specifies an alternate block
              that the superblock should be read from. (Use -r instead of this

       -B blocksize
              The  block size, specified in bytes, can range from 512 to 4096.
              A value of  0,  the  default,  is  used  to  indicate  that  the
              blocksize should be automatically detected.

       -f     Force checking even if the file system is clean.

       -F     By  default  fsck.ocfs2  will check with the cluster services to
              ensure that the volume is not in-use (mounted) on  any  node  in
              the  cluster  before proceeding.  -F skips this check and should
              only be used when it can be guaranteed that the  volume  is  not
              mounted  on  any  node  in  the cluster. WARNING: If the cluster
              check is disabled and the volume  is  mounted  on  one  or  more
              nodes,  file system corruption is very likely. If unsure, do not
              use this option.

       -G     Usually fsck.ocfs2 will silently assume inodes whose  generation
              number  does  not match the generation number of the super block
              are unused inodes.  This option causes  fsck.ocfs2  to  ask  the
              user if these inodes should in fact be marked unused.

       -n     Give  the ’no’ answer to all questions that fsck will ask.  This
              guarantees that the file system will not  be  modified  and  the
              device  will be opened read-only.  The output of fsck.ocfs2 with
              this option can be redirected to produce  a  record  of  a  file
              system’s faults.

       -r backup-number
              mkfs.ocfs2  makes  upto  6  backup  copies  of the superblock at
              offsets 1G, 4G, 16G, 64G, 256G and 1T depending on the  size  of
              the volume.  Use this option to specify the backup, 1 thru 6, to
              use to recover the superblock.

       -y     Give the ’yes’ answer to all questions that fsck will ask.  This
              will  repair  all faults that fsck.ocfs2 finds but will not give
              the operator a chance to intervene if fsck.ocfs2 decides that it
              wants to drastically repair the file system.

       -v     This  option causes fsck.ocfs2 to produce a very large amount of
              debugging output.

       -V     Print version information and exit.


       The exit code returned by  fsck.ocfs2  is  the  sum  of  the  following
            0    - No errors
            1    - File system errors corrected
            2    - File system errors corrected, system should
                   be rebooted
            4    - File system errors left uncorrected
            8    - Operational error
            16   - Usage or syntax error
            32   - fsck.ocfs2 canceled by user request
            128  - Shared library error


       mkfs.ocfs2(8)    debugfs.ocfs2(8)    tunefs.ocfs2(8)   mounted.ocfs2(8)
       ocfs2console(8) o2cb(7)


       Oracle Corporation.  This man page entry derives some text,  especially
       the   exit   code   summary,   from   e2fsck(8)  by  Theodore  Y.  Ts’o


       Copyright © 2004, 2009 Oracle. All rights reserved.