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TTT:[200] man mount
Maintenance Commands mount(1M)
NAME
mount, umount - mount or unmount file systems and remote
resources
SYNOPSIS
mount [ -p | -v ]
mount [ -F FSType ] [ generic_options ] [
-o specific_options ] [ -O ] special | mount_point
mount [ -F FSType ] [ generic_options ] [
-o specific_options ] [ -O ] special mount_point
mount -a [ -F FSType ] [ -V ] [ current_options ] [
-o specific_options ] [ mount_point ... ]
umount [ -f ] [ -V ] [ -o specific_options ] special |
mount_point
umount -a [ -f ] [ -V ] [ -o specific_options ] [
mount_point ... ]
DESCRIPTION
mount attaches a file system to the file system hierarchy at
the mount_point, which is the pathname of a directory. If
mount_point has any contents prior to the mount operation,
these are hidden until the file system is unmounted.
umount unmounts a currently mounted file system, which may
be specified either as a mount_point or as special, the
device on which the file system resides.
The table of currently mounted file systems can be found by
examining the mounted file system information file. This is
provided by a file system that is usually mounted on
/etc/mnttab. The mounted file system information is
described in mnttab(4). Mounting a file system adds an entry
to the mount table; a umount removes an entry from the
table.
When invoked with both the special and mount_point argu-
ments and the -F option, mount validates all arguments
except for special and invokes the appropriate FSType-
specific mount module. If invoked with no arguments, mount
lists all the mounted file systems recorded in the mount
table, /etc/mnttab. If invoked with a partial argument list
(with only one of special or mount_point, or with both
special or mount_point specified but not FSType), mount
will search /etc/vfstab for an entry that will supply the
missing arguments. If no entry is found, and the special
argument starts with "/", the default local file system
type specified in /etc/default/fs will be used. Otherwise
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Maintenance Commands mount(1M)
the default remote file system type will be used. The
default remote file system type is determined by the first
entry in the /etc/dfs/fstypes file. After filling in
missing arguments, mount will invoke the FSType-specific
mount module.
Only a super-user can mount or unmount file systems using
mount and umount. However, any user can use mount to list
mounted file systems and resources.
OPTIONS
-F FSType
Used to specify the FSType on which to operate. The
FSType must be specified or must be determinable from
/etc/vfstab, or by consulting /etc/default/fs or
/etc/dfs/fstypes.
-a [ mount_points. . . ]
Perform mount or umount operations in parallel, when
possible.
If mount points are not specified, mount will mount
all file systems whose /etc/vfstab "mount at boot"
field is "yes". If mount points are specified, then
/etc/vfstab "mount at boot" field will be ignored.
If mount points are specified, umount will only umount
those mount points. If none is specified, then umount
will attempt to unmount all file systems in
/etc/mnttab, with the exception of certain system
required file systems: /, /usr, /var, /var/adm,
/var/run, /proc, /dev/fd and /tmp.
-f Forcibly unmount a file system.
Without this option, umount does not allow a file sys-
tem to be unmounted if a file on the file system is
busy. Using this option can cause data loss for open
files; programs which access files after the file sys-
tem has been unmounted will get an error (EIO).
-p Print the list of mounted file systems in the
/etc/vfstab format. Must be the only option specified.
-v Print the list of mounted file systems in verbose for-
mat. Must be the only option specified.
-V Echo the complete command line, but do not execute the
command. umount generates a command line by using the
options and arguments provided by the user and adding
to them information derived from /etc/mnttab. This
option should be used to verify and validate the
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Maintenance Commands mount(1M)
command line.
generic_options
Options that are commonly supported by most FSType-
specific command modules. The following options are
available:
-m Mount the file system without making an entry in
/etc/mnttab.
-g Globally mount the file system. On a clustered
system, this globally mounts the file system on
all nodes of the cluster. On a non-clustered
system this has no effect.
-o Specify FSType-specific options in a comma
separated (without spaces) list of suboptions
and keyword-attribute pairs for interpretation
by the FSType-specific module of the command.
(See mount_ufs(1M))
-O Overlay mount. Allow the file system to be
mounted over an existing mount point, making
the underlying file system inaccessible. If a
mount is attempted on a pre-existing mount point
without setting this flag, the mount will fail,
producing the error "device busy".
-r Mount the file system read-only.
USAGE
See largefile(5) for the description of the behavior of
mount and umount when encountering files greater than or
equal to 2 Gbyte ( 2**31 bytes).
FILES
/etc/mnttab
mount table
/etc/default/fs
default local file system type. Default values can be
set for the following flags in /etc/default/fs. For
example: LOCAL=ufs
LOCAL:
The default partition for a command if no FSType
is specified.
/etc/vfstab
list of default parameters for each file system.
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Maintenance Commands mount(1M)
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWcsu |
|_____________________________|_____________________________|
SEE ALSO
mount_cachefs(1M), mount_hsfs(1M), mount_nfs(1M),
mount_pcfs(1M), mount_tmpfs(1M), mount_ufs(1M),
mountall(1M), umountall(1M), mnttab(4), vfstab(4), attri-
butes( 5), largefile(5), lofs(7FS), pcfs(7FS)
NOTES
If the directory on which a file system is to be mounted is
a symbolic link, the file system is mounted on the directory
to which the symbolic link refers, rather than on top of the
symbolic link itself.
SunOS 5.8 Last change: 17 Aug 1999 4
TTT:[202] man vfstab
File Formats vfstab(4)
NAME
vfstab - table of file system defaults
DESCRIPTION
The file /etc/vfstab describes defaults for each file sys-
tem. The information is stored in a table with the following
column headings:
device device mount FS fsck mount mount
to mount to fsck point type pass at boot options
The fields in the table are space-separated and show the
resource name (device to mount), the raw device to fsck
(device to fsck), the default mount directory (mount point),
the name of the file system type (FS type), the number used
by fsck to decide whether to check the file system automat-
ically (fsck pass), whether the file system should be
mounted automatically by mountall (mount at boot), and the
file system mount options (mount options). (See respective
mount file system man page below in SEE ALSO for mount
options.) A '-' is used to indicate no entry in a field.
This may be used when a field does not apply to the resource
being mounted.
The getvfsent(3C) family of routines is used to read and
write to /etc/vfstab.
/etc/vfstab may be used to specify swap areas. An entry so
specified, (which can be a file or a device), will automat-
ically be added as a swap area by the /sbin/swapadd script
when the system boots. To specify a swap area, the device-
to-mount field contains the name of the swap file or device,
the FS-type is "swap", mount-at-boot is "no" and all other
fields have no entry.
SEE ALSO
fsck(1M), mount(1M), mount_cachefs(1M), mount_hsfs(1M),
mount_nfs(1M), mount_tmpfs(1M), mount_ufs(1M), swap(1M),
getvfsent(3C)
System Administration Guide, Volume 1
SunOS 5.8 Last change: 17 Aug 1999 1 |
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发表于 2006-08-17 17:41
