rump_tmpfs —
mount a tmpfs fictional fs with a userspace server
file-system PUFFS
pseudo-device putter
  
    | rump_tmpfs | [options] tmpfs
      mountpoint | 
NOTE! This manual page describes features specific to the
  rump(3) file server. Please see
  mount_tmpfs(8) for a full
  description of the available command line options.
The rump_tmpfs utility can be used to
    mount tmpfs file systems. It uses
    rump(3) and
    p2k(3) to facilitate running the
    file system as a server in userspace. As opposed to
    mount_tmpfs(8),
    rump_tmpfs does not use file system code within the
    kernel and therefore does not require kernel support except
    puffs(4). Apart from a minor
    speed penalty there is no downside with respect to in-kernel code.
To use rump_tmpfs via
    mount(8), the flags
    -o rump and
    -t tmpfs should be given.
    Similarly, rump_tmpfs is used instead of
    mount_tmpfs(8) if
    “rump” is added to the options field of
    fstab(5).
The rump_tmpfs utility first appeared in
  NetBSD 5.0.