.TH XIP2 8 "8 December 2003" "Linux 2.4" "Linux Programmer's Manual"
.SH NAME
xip2 \- mount a xip2 file system
.SH "DESCRIPTION"
This man page describes mount options specific to the xip2 filesystem. Have a 
look at the man page of 
.BR mount (2)
for information about what mount options are and how mount is used overall.
.SH "Mount options inherited from ext2"
The `xip2' file system is derived from the second extended filesystem (ext2).
It supports the following mount options which are inherited from ext2:
.TP
.BR bsddf " / " minixdf
Set the behaviour for the
.I statfs
system call. The
.B minixdf
behaviour is to return in the
.I f_blocks
field the total number of blocks of the file system, while the
.B bsddf
behaviour (which is the default) is to subtract the overhead blocks
used by the ext2 file system and not available for file storage.
.TP
.BR errors=continue " / " errors=remount-ro " / " errors=panic
Define the behaviour when an error is encountered.
(Either ignore errors and just mark the file system erroneous and continue,
or remount the file system read-only, or panic and halt the system.) 
Note that  mounting read-only does not change anything because the xip2 file 
system is read-only only anyway.
.TP
.BR grpid " or " bsdgroups " / " nogrpid " or " sysvgroups
These options are accepted but ignored.
.TP
\fBresgid=\fP\fIn\fP and \fBresuid=\fP\fIn\fP
These options are accepted but ignored.
.TP
.BI sb= n
Instead of block 1, use block
.I n
as superblock. This could be useful when the filesystem has been damaged.
The block number here uses 1k units. Thus, if you want to use logical
block 32768 on a filesystem with 4k blocks, use "sb=131072". Note that the 
xip2 file system always works with 4k blocks.
.TP
.BR grpquota " / " noquota " / " quota " / " usrquota
These options are accepted but ignored.

.TP
.BR nouid32
Disables 32-bit UIDs and GIDs.  This is for interoperability with older
kernels which only store and expect 16-bit values.
.SH "Mount options specific for xip2"
The 'xip2' file system supports only one mount option that is specific for its
use:
.TP
.BI memarea= <name>
This mount-option is mandatory. It specifies the name of the memory segment to
be used. In case of running on zSeries z/VM, available memory segment names
correspond with available z/VM DCSS.
.SH "SEE ALSO"
.BR mount (8)
.SH BUGS
As of today, and mostly due to the stable code base inherited from the second 
extended filesystem, no known bugs exist. In case you think you encountered 
one, please report it to Carsten Otte
.B <cotte@de.ibm.com>
