{"id":3464,"date":"2022-12-20T17:08:44","date_gmt":"2022-12-20T20:08:44","guid":{"rendered":"http:\/\/lode.uno\/linux-man\/index.php\/2022\/12\/20\/jfs_mkfs-man8\/"},"modified":"2022-12-20T17:08:44","modified_gmt":"2022-12-20T20:08:44","slug":"jfs_mkfs-man8","status":"publish","type":"post","link":"https:\/\/lode.uno\/linux-man\/2022\/12\/20\/jfs_mkfs-man8\/","title":{"rendered":"jfs_mkfs (man8)"},"content":{"rendered":"

jfs_mkfs<\/h1>\n

NAME<\/a>
SYNOPSIS<\/a>
DESCRIPTION<\/a>
WARNING<\/a>
OPTIONS<\/a>
EXAMPLES<\/a>
REPORTING BUGS<\/a>
SEE ALSO<\/a>
AUTHORS<\/a> <\/p>\n

\n

NAME <\/a> <\/h2>\n

jfs_mkfs<\/b> \u2212 create a JFS formatted partition<\/p>\n

SYNOPSIS <\/a> <\/h2>\n

jfs_mkfs<\/b> [options] device<\/i> [ blocks ]<\/p>\n

DESCRIPTION <\/a> <\/h2>\n

jfs_mkfs<\/b> is used to create (format) a JFS partition. jfs_mkfs<\/b> must be run as root.<\/p>\n

device<\/i> is the special file name corresponding to the actual device (e.g. \/dev\/hdb1<\/i>) on which a JFS file system and\/or JFS journal will be created. blocks<\/i> is the number of blocks to be used for the file system. If omitted, jfs_mkfs<\/b> automatically figures the file system size.<\/p>\n

The default block size is 4096<\/b>.<\/p>\n

WARNING <\/a> <\/h2>\n

jfs_mkfs<\/b> will destroy all data on the specified device!<\/p>\n

OPTIONS <\/a> <\/h2>\n\n\n
<\/td>\n\n

\u2212c<\/b><\/p>\n<\/td>\n

<\/td>\n\n

Check the device for bad blocks before building the file system.<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

-j<\/b> journal_device<\/i><\/p>\n

Create the external JFS journal on journal_device<\/i> , create the JFS file system on device<\/i> , and attach the external journal to the file system.<\/p>\n

\u2212J<\/b> journal-options<\/i><\/p>\n

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:<\/p>\n

journal_dev<\/b><\/p>\n

Create an external JFS journal on the given device.<\/p>\n

device=<\/b>external-journal<\/i><\/p>\n

Attach an existing external JFS journal located on external-journal<\/i> to the JFS file system that will be created on device<\/i>. The external journal must already have been created using the command<\/p>\n

jfs_mkfs -J journal_dev<\/b> external-journal<\/i><\/p>\n

Attach the external journal to the file system being created by using the command<\/p>\n

jfs_mkfs -J device=<\/b>external-journal device<\/i><\/p>\n

Instead of specifying a device name directly, external-journal<\/i> can also be specified by either LABEL=<\/b>label<\/i> or UUID=<\/b>UUID<\/i> 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<\/b>(8) to display a journal device\u2019s volume label and UUID. (See the -l<\/b>, -L<\/b>, and -U<\/b> options of jfs_tune<\/b>(8).)<\/p>\n

Only one of the journal_dev<\/b> or device=<\/b> options can be given per jfs_mkfs<\/b> issuance.<\/p>\n

-L<\/b> volume_label<\/i><\/p>\n

Set the volume label for the newly formatted device.<\/p>\n

If -L<\/b> volume_label<\/i> is used along with -J journal_device<\/b>, the volume label of the specified external journal device will be set to volume_label<\/i>. Otherwise, the volume label of the JFS file system will be set to volume_label<\/i>.<\/p>\n\n\n\n
<\/td>\n\n

\u2212O<\/b><\/p>\n<\/td>\n

<\/td>\n\n

Provide case-insensitive support for compatibility with OS\/2.<\/p>\n<\/td>\n<\/tr>\n

<\/td>\n\n

\u2212q<\/b><\/p>\n<\/td>\n

<\/td>\n\n

Quiet execution – do not ask for confirmation before creating the file system.<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

-s<\/b> log_size<\/i><\/p>\n

Set the log size (in megabytes) of the inline log. If the \u2212s<\/b> option is not used, the default log size is 0.4% of the aggregate size.<\/p>\n\n\n
<\/td>\n\n

\u2212V<\/b><\/p>\n<\/td>\n

<\/td>\n\n

Print version information and exit (regardless of any other chosen options).<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

EXAMPLES <\/a> <\/h2>\n

Format 3rd partition on 2nd hard disk with the volume label “JFS_hdb3”:<\/p>\n

jfs_mkfs -L JFS_hdb3 \/dev\/hdb3<\/b><\/p>\n

Format 5th partition on 1st hard disk, verifying each block created:<\/p>\n

jfs_mkfs -c \/dev\/hda5<\/b><\/p>\n

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:<\/p>\n

jfs_mkfs -j \/dev\/hdb3 \/dev\/hda4<\/b><\/p>\n

REPORTING BUGS <\/a> <\/h2>\n

If you find a bug in JFS<\/b> or jfs_mkfs<\/b>, please report it via the bug tracking system (“Report Bugs” section) of the JFS project web site:
http:\/\/jfs.sourceforge.net\/<\/p>\n

Please send as much pertinent information as possible including any error messages resulting from running jfs_mkfs<\/b>.<\/p>\n

SEE ALSO <\/a> <\/h2>\n

mkfs<\/b>(8), jfs_fsck<\/b>(8), jfs_fscklog<\/b>(8), jfs_tune<\/b>(8), jfs_logdump<\/b>(8), jfs_debugfs<\/b>(8)<\/p>\n

AUTHORS <\/a> <\/h2>\n

Barry Arndt (barndt@us.ibm.com)
William Braswell, Jr.<\/p>\n

jfs_mkfs<\/b> is maintained by IBM.
See the JFS project web site for more details:
http:\/\/jfs.sourceforge.net\/<\/p>\n

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