SIMPLE SOLUTIONS

9MOUNT, 9BIND, 9UMOUNT - reference manual online

Mount/unmount 9p filesystems.

Chapter
04 September 2007
9mount(1)                                 User commands                                 9mount(1)

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 chan‐ nels 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 @gmail.com
SEE ALSO mount(1)
9mount 04 September 2007 9mount(1)