| VNDCONFIG(8) | System Manager's Manual | VNDCONFIG(8) | 
vndconfig —
| vndconfig | [ -cirvz] [-fdisktab] [-ttypename] vnode_disk
      regular_file [geomspec] | 
| vndconfig | -u[-Fv]
      vnode_disk | 
| vndconfig | -l[-mmin] [vnode_disk ...] | 
vndconfig command configures vnode pseudo disk
  devices. It will associate the vnode disk vnode_disk
  with the regular file regular_file allowing the latter
  to be accessed as though it were a disk. Hence a regular file within the
  filesystem can be used for swapping or can contain a filesystem that is
  mounted in the name space. The vnode_disk is a special
  file of raw partition or name of vnode disk like vnd0.
Options indicate an action to be performed:
-cIf geomspec is specified, the vnode device will emulate the specified disk geometry. The format of the geomspec argument is:
/
      nsectors/ntracks/ncylindersIf geometry is not specified, the kernel will choose a default based on 1MB cylinders. secsize is the number of bytes per sector. It must be a power of two, and at least 512. nsectors is the number of sectors per track. ntracks is the number of tracks per cylinder. ncylinders is the number of cylinders in the device.
-F-u.-f
    disktab-t option should look up in
      disktab instead of in
      /etc/disktab.-i-l-m
    min-l and if no specific devices are
      given, causes at least min devices to be listed. The
      default for min is 4, but all vnd devices up to (and
      sometimes just beyond) the highest numbered vnd device configured since
      the system last booted will be listed. If min is set
      to 0, then only vnd devices currently in use will be shown.-r-t
    typename-u-v-zIf no action option [-clu] is given,
    -c is assumed.
vndconfig will exit with status 0 if the operation
  requested completed successfully, or 1 otherwise. Unsuccessful completion can
  be caused by unknown or incorrectly used options; attempting to configure a
  vnd that is already configured; or unconfigure one that is not, or without
  -F, one which is still in use; or if devices are
  specified that do not exist or are not
  vnd(4) devices, giving an improper
  geometry, etc.
vndconfig vnd0
  /tmp/diskimagevndconfig /dev/rvnd0c
  /tmp/diskimageConfigures the vnode disk vnd0. Please note that use of the second form of the command is discouraged because it requires knowledge of the raw partition which varies between architectures. For the first form, be aware that there must not be a file vnd0 in the current directory, or it will be assumed to be the vnd device to be configured (which will usually fail.)
vndconfig vnd0 /tmp/floppy.img
  512/18/2/80Configures the vnode disk vnd0 emulating the geometry of 512 bytes per sector, 18 sectors per track, 2 tracks per cylinder, and 80 cylinders total.
vndconfig vnd0 /tmp/image.udf
  2048/1/1/0Configures the vnode disk vnd0 for an UDF image to be used with mount_udf(8).
vndconfig -t floppy vnd0
  /tmp/floppy.imgConfigures the vnode disk vnd0 using the geometry specified in the floppy entry in /etc/disktab.
vndconfig -u vnd0Unconfigures the vnd0 device.
To obtain status on all vnd devices listed in
    /dev (assuming a system where the ‘d’
    partition is the whole device (RAW_PART)), use:
vndconfig -l /dev/vnd*dUsing
vndconfig -m0 -l
  /dev/vnd*dvndconfig -l-m) regardless of what might appear in
  /dev (or elsewhere.)
vnconfig command appeared in NetBSD
  1.0. It was renamed to vndconfig in
  NetBSD 7.0 for consistency with other similar
  commands. (The original name was also retained as an alternative for backwards
  compatibility.)
| January 10, 2021 | NetBSD 10.1 |