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    Command:

    jfs_mkfs

    
    
    
    

    SYNOPSIS

           jfs_mkfs [options] device [ blocks ]
    
    
    

    DESCRIPTION

           jfs_mkfs  is used to create (format) a JFS partition.  jfs_mkfs must be
           run as root.
    
           device is the special file name  corresponding  to  the  actual  device
           (e.g.  /dev/hdb1) on which a JFS file system and/or JFS journal will be
           created.  blocks is the number of blocks to be used for the  file  sys-
           tem.   If omitted, jfs_mkfs automatically figures the file system size.
    
           The default block size is 4096.
    
    
    

    WARNING

           jfs_mkfs will destroy all data on the specified device!
    
    
    

    OPTIONS

           -c     Check the device for bad blocks before building the file system.
    
           -j journal_device
                  Create  the  external JFS journal on journal_device , create the
                  JFS file system on device , and attach the external  journal  to
                  the file system.
    
           -J journal-options
                  Create  the  JFS journal on its own device or attach an external
                  JFS journal to the JFS file system using  options  specified  on
                  the command-line.  The following journal options are supported:
    
                       journal_dev
                              Create  an external JFS journal on the given device.
    
                       device=external-journal
                              Attach an existing external JFS journal  located  on
                              external-journal to the JFS file system that will be
                              created  on  device.   The  external  journal   must
                              already have been created using the command
    
                              jfs_mkfs -J journal_dev external-journal
    
                              Attach the external journal to the file system being
                              created by using the command
    
           -L volume_label
                  Set the volume label for the newly formatted device.
    
                  If -L volume_label is used along  with  -J  journal_device,  the
                  volume  label  of  the specified external journal device will be
                  set to volume_label.  Otherwise, the volume  label  of  the  JFS
                  file system will be set to volume_label.
    
           -O     Provide case-insensitive support for compatibility with OS/2.
    
           -q     Quiet  execution  -  do not ask for confirmation before creating
                  the file system.
    
           -s log_size
                  Set the log size (in megabytes) of the inline log.   If  the  -s
                  option  is  not used, the default log size is 0.4% of the aggre-
                  gate size.
    
           -V     Print version information and exit (regardless of any other cho-
                  sen options).
    
    
    

    EXAMPLES

           Format 3rd partition on 2nd hard disk with the volume label "JFS_hdb3":
    
                  jfs_mkfs -L JFS_hdb3 /dev/hdb3
    
           Format 5th partition on 1st hard disk, verifying each block created:
    
                  jfs_mkfs -c /dev/hda5
    
           Format 3rd partition on 2nd hard disk as external journal,  format  4th
           partition  on 1st hard disk as JFS file system, and attach the external
           journal to the file system:
    
                  jfs_mkfs -j /dev/hdb3 /dev/hda4
    
    
    

    REPORTING BUGS

           If you find a bug in JFS or jfs_mkfs, please  report  it  via  the  bug
           tracking system ("Report Bugs" section) of the JFS project web site:
           http://jfs.sourceforge.net/
    
           jfs_mkfs is maintained by IBM.
           See the JFS project web site for more details:
           http://jfs.sourceforge.net/
    
                                     March 9, 2005                     jfs_mkfs(8)
    
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