MOUNT_TMPFS(8) | System Manager's Manual | MOUNT_TMPFS(8) |
mount_tmpfs
—
mount_tmpfs |
[-g group]
[-m mode]
[-n nodes]
[-o options]
[-s size]
[-u user]
tmpfs mount_point |
mount_tmpfs
command attaches an instance of the
efficient memory file system to the global file system namespace. The
tmpfs parameter only exists for compatibility with the
other mount commands and is ignored. The directory specified by
mount_point is converted to an absolute path before use
and its attributes (owner, group and mode) are inherited unless explicitly
overridden by the options described below.
The following options are supported:
-g
group-m
mode-n
nodes-s
.-o
options-o
flag followed by a
comma-separated string of options. See the
mount(8) man page for
possible options and their meanings.-s
size-u
userEvery option that accepts a numerical value as its argument can take a trailing ‘b’ to indicate bytes (the default), a ‘k’ to indicate kilobytes, a ‘M’ to indicate megabytes or a ‘G’ to indicate gigabytes. Note that both lowercase and uppercase forms of these letters are allowed.
# mount -t tmpfs tmpfs
/tmp
The following command mounts a tmpfs instance over the /mnt directory, setting a 20 megabytes limit in space, owned by the ‘joe’ user and belonging to the ‘users’ group, with a restricted 0700 mode:
# mount -t tmpfs -o -s20M -o -ujoe -o
-gusers -o -m0700 tmpfs /mnt
See /usr/share/examples/fstab/fstab.ramdisk for some examples on how to add tmpfs entries to /etc/fstab.
mount_tmpfs
utility first appeared in
NetBSD 4.0.
-n
) will prevent this; the default value for this
setting is also often adjusted to an adequate value to resolve this.
June 7, 2014 | NetBSD 9.4 |