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System Administration Commands mount_tmpfs(1M)
NAME
mount_tmpfs - mount tmpfs file systems
SYNOPSIS
mount [ -F tmpfs] [ -o specific_options] [-O] special
mount_point
DESCRIPTION
tmpfs is a memory based file system which uses kernel
resources relating to the VM system and page cache as a file
system.
mount attaches a tmpfs file system to the file system
hierarchy at the pathname location mount_point, which must
already exist. If mount_point has any contents prior to the
mount operation, these remain hidden until the file system
is once again unmounted. The attributes (mode, owner, and
group) of the root of the tmpfs filesystem are inherited
from the underlying mount_point, provided that those attri-
butes are determinable. If not, the root's attributes are
set to their default values.
The special argument is usually specified as swap but is in
fact disregarded and assumed to be the virtual memory
resources within the system.
OPTIONS
-o specific_options Specify tmpfs file system specific
options in a comma-separated list
with no intervening spaces. If
invalid options are specified, a
warning message is printed and the
invalid options are ignored. The
following options are available:
size=sz The sz argument con-
trols the size of
this particular
tmpfs file system.
If the argument is
has a `k' suffix,
the number will be
interpreted as a
number of kilobytes.
An `m' suffix will
be interpreted as a
number of megabytes.
No suffix is inter-
preted as bytes. In
all cases, the
actual size of the
SunOS 5.10 Last change: 24 Nov 2003 1
System Administration Commands mount_tmpfs(1M)
file system is the
number of bytes
specified, rounded
up to the physical
pagesize of the sys-
tem.
xattr | noxattr Allow or disallow
the creation and
manipulation of
extended attributes.
The default is
xattr. See fsattr(5)
for a description of
extended attributes.
-O Overlay mount. Allow the file sys-
tem 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
errordevice busy.
FILES
/etc/mnttab Table of mounted file systems
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWcsu |
|_____________________________|_____________________________|
SEE ALSO
mount(1M), mkdir(2), mount(2), open(2), umount(2),
mnttab(4), attributes(5), fsattr(5), tmpfs(7FS)
SunOS 5.10 Last change: 24 Nov 2003 2
System Administration Commands mount_tmpfs(1M)
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 5.10 Last change: 24 Nov 2003 3
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This page was generated on Wed Sep 12 11:26:17 GMT 2007
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