HP-UX Reference (11i v1 00/12) - 1M System Administration Commands A-M (vol 3)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man1m/!!!intro.1m
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mount_vxfs(1M) mount_vxfs(1M)
VX_UNBUFFERED caching advisories, as if the VX_UNBUFFERED caching
advisory was set.
The closesync, dsync, unbuffered , and direct values all cause the
equivalent of an fsync(2) to be run when the file is closed.
The tmpcache value disables delayed extending writes, trading off integrity for
performance. When this option is chosen, VxFS does not zero out new extents allo-
cated as files are sequentially written. Uninitialized data may appear in files being
written at the time of a system crash. See vxfsio(7) for an explanation of
VX_DIRECT, VX_DSYNC, and VX_UNBUFFERED.
NOTE: mincache=direct, mincache=dsync, mincache=unbuffered,
and mincache=tmpcache are available only with the HP OnLineJFS product.
quota Enable disk quotas (valid only for rw type file systems). VxFS maintains quota
information in a private area of the file system. If the file system is mounted with
quotas enabled, and the file system was previously mounted with quotas disabled
and was modified, then the quota information is rebuilt. This may take a while.
remount
Change the mount options for a mounted file system. In particular,
remount
changes the logging and caching policies. It also changes a files system from read-
only to read/write.
remount cannot change a file system from read/write to read-only, nor can it set
the snapof or snapsize attributes.
rw|ro Read/write or read-only. The default is
rw.
snapof=filesystem
Mount the file system as a snapshot of filesystem, where filesystem is either the
directory on which a VxFS file system is mounted, or is the block special file contain-
ing a mounted VxFS file system. An explicit
-F vxfs option is required to mount
a snapshot file system.
NOTE:
snapof=filesystem is available only with the HP OnLineJFS product.
snapsize=size
Used in conjunction with snapof. size is the size in sectors of the snapshot file
system being mounted. This option is required only when the device driver is inca-
pable of determining the size of special, and defaults to the entire device if not
specified.
NOTE: snapsize=size is available only with the HP OnLineJFS product.
suid|nosuid
setuid execution allowed or setuid execution not allowed. The default is suid.
-p Report the list of mounted file systems in the /etc/fstab format.
-Q Prevent display of error messages, resulting from an attempt to mount already mounted file
systems.
-r Mount the specified file system as read-only. Physically write-protected file systems must be
mounted in this way or errors occur when access times are updated, whether or not any expli-
cit write is attempted.
-v Reports the regular output with file system type and flags, however, directory and special
fields are reversed.
-V Echo the completed command line, but do not execute the command. The command line is
generated by incorporating the user-specified options and other information derived from
/etc/fstab. This option allows the user to verify the command line.
umount recognizes the following options:
-a Attempt to unmount all file systems described in /etc/mnttab. All optional fields in
/etc/mnttab must be included and supported. If -F vxfs is specified, all VxFS file sys-
tems in /etc/mnttab are unmounted. File systems are not necessarily unmounted in the
HP-UX Release 11i: December 2000 − 3 − Section 1M−−511
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