Home Man
Today's Posts

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:
Select Section of Man Page:
Select Man Page Repository:

NetBSD 6.1.5 - man page for mount_psshfs (netbsd section 8)

MOUNT_PSSHFS(8) 		   BSD System Manager's Manual			  MOUNT_PSSHFS(8)

     mount_psshfs -- sshfs implementation for puffs

     mount_psshfs [options] user@host[:path] mount_point

     The mount_psshfs utility can be used to mount a file system using the ssh sftp subprotocol,
     making a remote directory hierarchy appear in the local directory tree.  This functionality
     is commonly known as sshfs.

     The mandatory parameters are the target host name and local mount point.  The target host
     parameter can optionally contain a username whose credentials will be used by the remote
     sshd, and a relative or absolute path for the remote mount point's root.  If no user is
     given, the credentials of the user issuing the mount command are used.  If no path is given,
     the user's home directory on the remote machine will be used.

     The following command line options are available:

     -c nconnect
	  Opens nconnect connections to the server.  Currently, the value has to be 1 or 2.  If 2
	  is specified, a second connection is opened for the reading and writing of data, while
	  directory operations are performed on their own connection.  This can greatly increase
	  directory operation performance (ls, mkdir, etc.) if mount_psshfs completely saturates
	  the available bandwidth by doing bulk data copying.  The default is 1.

     -e   Makes the mounted file system NFS exportable.  If this option is used, it is very
	  important to understand that mount_psshfs can not provide complete support for NFS due
	  to the limitations in the backend.  Files are valid only for the time that mount_psshfs
	  is running and in the event of e.g. a server crash, all client retries to access files
	  will fail.

     -F configfile
	  Pass a configuration file to ssh(1).	This will make it ignore the system-wide
	  /etc/ssh/ssh_config configuration file and use configfile instead of ~/.ssh/config.

     -g manglegid
	  Converts remote manglegid to the effective gid of the file server and vice versa.  See

     -o [no]option
	  This flag can be used to give standard mount options and options to puffs.

     -O sshopt=value
	  Pass an option to ssh(1), for example -O Port=22.  For a list of valid options, see

     -p   Preserve connection.	This option makes mount_psshfs to try to reconnect to the server
	  if the connection fails.  The option is very experimental and does not preserve open
	  files or retry current requests and should generally only be used if the trade-offs are
	  well understood.

     -r max_reads
	  Limits maximum outstanding read requests for each node to max_reads.	This can be used
	  to improve interactive performance on low-bandwidth links when also performing bulk
	  data reads.

     -s   This flag can be used to make the program stay on top.  The default is to detach from
	  the terminal and run in the background.

     -t timeout
	  By default mount_psshfs caches directory contents and node attributes for 30 seconds
	  before re-fetching from the server to check if anything has changed on the server.
	  This option is used to adjust the timeout period to timeout seconds.	A value of 0
	  means the cache is never valid; -1 means it is valid indefinitely.  It is possible to
	  force a re-read regardless of timeout status by sending SIGHUP to the mount_psshfs

	  Note: the file system will still free nodes when requested by the kernel and will lose
	  all cached information in doing so.  How frequently this happens depends on system
	  activity and the total number of available vnodes in the system (kern.maxvnodes).

     -u mangleuid
	  Converts remote mangleuid to the effective uid of the file server and vice versa.  This
	  is a simple special case of the functionality of mount_umap(8).  For example: you mount
	  remote me@darkmoon as the local user "me".  If the uid of "me" on the local system is
	  101 and on darkmoon it is 202, you would use -u 202 to see files owned by 202 on dark-
	  moon as owned by 101 when browsing the mount point.  Apart from the cosmetic effect,
	  this makes things like "chown me file" work.	See -g.

     The following example illustrates how to mount the directory /usr on server bigiron as user
     abc on local directory /mnt with ssh transport compression enabled:

	   mount_psshfs -O Compression=yes abc@bigiron:/usr /mnt

     It is possible to use fstab(5) for psshfs mounts, with SSH public key authentication:

	   abc@bigiron:/usr /mnt psshfs

     sftp(1), puffs(3), puffs(4), fstab(5), ssh_config(5), mount(8), sshd(8)

     The mount_psshfs utility first appeared in NetBSD 5.0.  It was inspired by FUSE sshfs.

     Permissions are not handled.  Do not expect the file system to behave except for a single

     Depending on if the server supports the sftp(1) stavfs protocol extension, free disk space
     may be displayed for the mount by df(1).  This information reflects the status at the
     server's mountpoint and may differ for subdiretories under the mount root.

BSD					 January 7, 2010				      BSD

All times are GMT -4. The time now is 04:44 AM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
Show Password