Ubuntu Manpage: 9mount, 9bind, 9umount - mount/unmount 9p filesystems

NAME

       9mount, 9bind, 9umount - mount/unmount 9p filesystems

SYNOPSIS

       9mount [ insuvx ] [ -a SPEC ] [ -c CACHE ] [ -d DEBUG ] [ -m MSIZE ] DIAL MOUNTPT

       9bind OLD NEW

       9umount MOUNTPT

DESCRIPTION

9mount mounts a 9p filesystem served at DIAL on MOUNTPT. MOUNTPT must be writable by you
and not sticky. DIAL is a dial string assuming one of the forms:

unix!SOCKET
tcp!HOST[!PORT]
virtio!CHANNEL
-

where SOCKET is the name of a file representing a socket, HOST is a hostname, PORT is a
port number or service name, and CHANNEL is a virtio channel name (currently ignored). -
indicates that 9p messages should be read/written on stdin/stdout. 9mount has several
options:

-i mount the file system with your uid/gid

-n dry-run, print mount command to stderr but don't actually mount anything

-s single attach mode - all users accessing the mount point see the same filesystem
(by default they'll each see a unique attach)

-u use the 9P2000.u extensions

-v use device mapping

-x exclusive access - other users cannot access the mount point

-a SPEC
SPEC determines which file tree to mount when attaching to file servers that export
multiple trees

-c CACHE
turns on caching using CACHE mode. Currently only loose cache mode is available,
which is suitable for exclusive read-only mounts.

-d DEBUG
comma separated list of channels for which to enable debug output. Possible
channels include: err, devel, 9p, vfs, conv, mux, trans, alloc, fcall.

-m MSIZE
specifies the maximum length of a single 9p message in bytes.

9bind performs a bind mount, making the tree visible at directory OLD also visible at
mount point NEW.

9umount unmounts a 9p filesystem previously mounted by you.

ENVIRONMENT

       $USER  the uname to provide to the server.

EXAMPLES

       9mount -i 'unix!/tmp/ns.'$USER'.:0/factotum' $HOME/n/factotum
              mount p9p's factotum interface

       9mount 'tcp!sources.cs.bell-labs.com' $HOME/n/sources
              import plan 9's "sources"

       9mount -u -a/home/sqweek/mail 'tcp!wren!5640' $HOME/mail
              import my maildir from my server(wren), being served by ufs

       9mount -i 'tcp!wren' $HOME/n/wren; 9bind $HOME/n/wren/home/sqweek/mail $HOME/mail
              again importing my maildir, this time serving via u9fs

BUGS

       9mount truncates user names and SPECs to 249 characters.  9umount doesn't  know  this,  so
       you  won't be able to unmount anything outside your home directory. But you probably never
       bother logging out if your user name is that long.

       9mount doesn't update /etc/mtab.

       9bind only does a "shallow", non-recursive bind - any mounted filesystems  under  the  OLD
       tree will not appear mounted in the NEW tree.

       If  you  9bind  a  non-9p  filesystem  outside  your home directory, 9umount won't let you
       unmount it.

AUTHOR

       sqweek@gmail.com