[net-next-2.6.git] / Documentation / filesystems / jfs.txt

IBM's Journaled File System (JFS) for Linux

JFS Homepage:  http://jfs.sourceforge.net/

The following mount options are supported:

iocharset=name	Character set to use for converting from Unicode to
		ASCII.  The default is to do no conversion.  Use
		iocharset=utf8 for UTF-8 translations.  This requires
		CONFIG_NLS_UTF8 to be set in the kernel .config file.
		iocharset=none specifies the default behavior explicitly.

resize=value	Resize the volume to <value> blocks.  JFS only supports
		growing a volume, not shrinking it.  This option is only
		valid during a remount, when the volume is mounted
		read-write.  The resize keyword with no value will grow
		the volume to the full size of the partition.

nointegrity	Do not write to the journal.  The primary use of this option
		is to allow for higher performance when restoring a volume
		from backup media.  The integrity of the volume is not
		guaranteed if the system abnormally abends.

integrity	Default.  Commit metadata changes to the journal.  Use this
		option to remount a volume where the nointegrity option was
		previously specified in order to restore normal behavior.

errors=continue		Keep going on a filesystem error.
errors=remount-ro	Default. Remount the filesystem read-only on an error.
errors=panic		Panic and halt the machine if an error occurs.

uid=value	Override on-disk uid with specified value
gid=value	Override on-disk gid with specified value
umask=value	Override on-disk umask with specified octal value.  For
		directories, the execute bit will be set if the corresponding
		read bit is set.

Please send bugs, comments, cards and letters to shaggy@linux.vnet.ibm.com.

The JFS mailing list can be subscribed to by using the link labeled
"Mail list Subscribe" at our web page http://jfs.sourceforge.net/
Commit	Line	Data
1da177e4 LT	1	IBM's Journaled File System (JFS) for Linux
	2
	3	JFS Homepage: http://jfs.sourceforge.net/
	4
	5	The following mount options are supported:
	6
	7	iocharset=name Character set to use for converting from Unicode to
	8	ASCII. The default is to do no conversion. Use
4de151d8	9	iocharset=utf8 for UTF-8 translations. This requires
1da177e4 LT	10	CONFIG_NLS_UTF8 to be set in the kernel .config file.
	11	iocharset=none specifies the default behavior explicitly.
	12
	13	resize=value Resize the volume to <value> blocks. JFS only supports
	14	growing a volume, not shrinking it. This option is only
	15	valid during a remount, when the volume is mounted
	16	read-write. The resize keyword with no value will grow
	17	the volume to the full size of the partition.
	18
	19	nointegrity Do not write to the journal. The primary use of this option
	20	is to allow for higher performance when restoring a volume
	21	from backup media. The integrity of the volume is not
	22	guaranteed if the system abnormally abends.
	23
	24	integrity Default. Commit metadata changes to the journal. Use this
	25	option to remount a volume where the nointegrity option was
	26	previously specified in order to restore normal behavior.
	27
	28	errors=continue Keep going on a filesystem error.
	29	errors=remount-ro Default. Remount the filesystem read-only on an error.
	30	errors=panic Panic and halt the machine if an error occurs.
	31
ba863a00 DK	32	uid=value Override on-disk uid with specified value
	33	gid=value Override on-disk gid with specified value
	34	umask=value Override on-disk umask with specified octal value. For
	35	directories, the execute bit will be set if the corresponding
	36	read bit is set.
	37
	38	Please send bugs, comments, cards and letters to shaggy@linux.vnet.ibm.com.
1da177e4 LT	39
	40	The JFS mailing list can be subscribed to by using the link labeled
	41	"Mail list Subscribe" at our web page http://jfs.sourceforge.net/