Provided by: diod_1.0.24-3_i386 bug

NAME

       mount.diod - mount diod file systems

SYNOPSIS

       mount.diod [OPTIONS] host[:aname] dir [-o options]

DESCRIPTION

       mount.diod  is  the mount utility for the distributed I/O daemon, which
       is an I/O forwarding service for Linux clusters built upon the Linux 9p
       file system.

       mount.diod  performs two main tasks: 1) connect and authenticate to the
       diod server, and 2) issue the mount(2)  system  call  with  appropriate
       mount options.

       Authentication  with  the  diod  server takes place in user space.  The
       connected (and authenticated) file descriptor  is  passed  as  a  mount
       option to the kernel 9p file system

       This command requires root to execute the mount(2) system call.

       The  9p  file  system  must support the 9P2000.L protocol variant, e.g.
       kernel 2.6.38 or above.

       The host portion of the  mount  spec  may  optionally  be  supplied  in
       hostlist  format,  e.g.  host1,host2,host3:aname or host[1-3]:aname, in
       which case hosts are tried in order until a  successful  connection  is
       obtained.  Post-connect mount errors are immediately fatal.

       If  the host portion of the mount spec begins with a forward-slash (/),
       it refers to the path to a UNIX domain socket.

COMMAND LINE OPTIONS

       -f, --fake-mount
              Do everything except the mount system call.

       -n, --no-mtab
              Do not update the system mtab.

       -v, --verbose
              Set verbose mode.

       -o, --options opt[,opt,...]
              Set mount options (see below).

MOUNT OPTIONS

       The following  file  system  specific  mount  options  are  handled  by
       mount.diod.

       aname=name
              The aname is the path of the exported file system on the server.
              It can be specified in the mount spec in host:aname format  like
              NFS,  or  it  can  be specified with this option.  diod will not
              allow an  attach  to  an  empty  aname.   diod  has  a  built-in
              synthetic  control file system that can be mounted with aname of
              ctl.  Note that "ctl" must be explicitly exported.

       uname=name
              The user name to authenticate to the diod server.   The  default
              is uname=root.

       access=mode
              Select  the access mode.  access=user (default) causes the mount
              to support multiple users,  and  requires  root  authentication.
              access=<uid>   restricts  access  at  the  client  to  only  the
              specified user.

       port=n Connect to the diod server on the specified port.   The  default
              is the IANA-assigned 9pfs port 564.

       trans=name
              Select  a  transport.  mount.diod only supports trans=fd because
              of its strategy for authentication.

       rfdno=n,wfdno=n
              The file descriptor for reading and writing with  trans=fd.   If
              set,   mount.diod   assumes  this  file  descriptor  is  already
              connected to a diod  server  and  ignores  host  in  the  device
              specification, and the port=n option.

       msize=n
              The  msize  is  the  max 9P packet payload size.  The default is
              65512 (65536-24)

       version=name
              Select 9P protocol version.  diod only supports 9p2000.L.

       cache=mode
              Specify a caching policy.  By default, no caches are  used.   If
              cache=loose,  no attempts are made at consistency.  This mode is
              intended for exclusive, read-only mounts.  If cache=fscache, use
              FS-Cache for a persistent, read-only cache backend.

       cachetag
              In the context of cache=fscache, select the cache tag to use for
              this session.  Cache tags for existing cache sessions are listed
              in /sys/fs/9p/caches.

       nodevmap
              Do not map special files.  Represent them as normal files.  This
              can be used to share devices/named pipes/sockets between hosts.

       debug=n
              Specifies debug level for the kernel 9p module.  The debug level
              is a bitmask.
              0x01  = display verbose error messages
              0x02  = developer debug (DEBUG_CURRENT)
              0x04  = display 9p trace
              0x08  = display VFS trace
              0x10  = display Marshalling debug
              0x20  = display RPC debug
              0x40  = display transport debug
              0x80  = display allocation debug
              0x100 = display protocol message debug
              0x200 = display Fid debug
              0x400 = display packet debug
              0x800 = display fscache tracing debug
              The  debug  level  is  global,  i.e.  it  applies to all 9P file
              systems and it remains set after the file system  is  unmounted.
              The default is debug=0.

SEE ALSO

       diod (8)