jfs_mkfs - create a JFS formatted partition

       Barry Arndt  (barndt@us.ibm.com)
       William Braswell, Jr.

       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)

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
       system.  If omitted, jfs_mkfs automatically figures the file system size.

       The default block size is 4096.

       Format 3rd partition on 2nd hard disk with the volume label "JFS_hdb3":

              jfs_mkfs-LJFS_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

jfs_mkfs - create a JFS formatted partition

-c     Check the device for bad blocks before building the file system.

       -jjournal_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.

       -Jjournal-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-Jjournal_devexternal-journal

                          Attach the external journal to the file system being created by using the command

                          jfs_mkfs-Jdevice=external-journaldevice

                          Instead  of  specifying a device name directly, external-journal can also be specified
                          by either LABEL=label or UUID=UUID to locate the external journal by either the volume
                          label or UUID stored in the JFS external log superblock at the start of  the  journal.
                          Use jfs_tune(8) to display a journal device's volume label and UUID.  (See the -l, -L,
                          and -U options of jfs_tune(8).)

              Only one of the journal_dev or device= options can be given per jfs_mkfs issuance.

       -Lvolume_label
              Set the volume label for the newly formatted device.

              If  -Lvolume_label  is  used  along  with  -Jjournal_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.

       -slog_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 aggregate size.

       -V     Print version information and exit (regardless of any other chosen options).

       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/

       Please send as much pertinent information as possible including any error messages resulting from running
       jfs_mkfs.

mkfs(8),jfs_fsck(8),jfs_fscklog(8),jfs_tune(8),jfs_logdump(8),jfs_debugfs(8)

jfs_mkfs [options] device [ blocks ]

jfs_mkfs will destroy all data on the specified device!