acrn-kernel/Documentation/filesystems/ufs.txt

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USING UFS
=========
mount -t ufs -o ufstype=type_of_ufs device dir
UFS OPTIONS
===========
ufstype=type_of_ufs
UFS is a file system widely used in different operating systems.
The problem are differences among implementations. Features of
some implementations are undocumented, so its hard to recognize
type of ufs automatically. That's why user must specify type of
ufs manually by mount option ufstype. Possible values are:
old old format of ufs
default value, supported as read-only
44bsd used in FreeBSD, NetBSD, OpenBSD
supported as read-write
ufs2 used in FreeBSD 5.x
supported as read-only
5xbsd synonym for ufs2
sun used in SunOS (Solaris)
supported as read-write
sunx86 used in SunOS for Intel (Solarisx86)
supported as read-write
hp used in HP-UX
supported as read-only
nextstep
used in NextStep
supported as read-only
nextstep-cd
used for NextStep CDROMs (block_size == 2048)
supported as read-only
openstep
used in OpenStep
supported as read-only
POSSIBLE PROBLEMS
=================
There is still bug in reallocation of fragment, in file fs/ufs/balloc.c,
line 364. But it seems working on current buffer cache configuration.
BUG REPORTS
===========
Any ufs bug report you can send to daniel.pirkl@email.cz (do not send
partition tables bug reports.)