SSHFS is a filesystem, that works over a SSH tunnel.
In order to mount a remote file system (e.g. from your development host) on your local account on the main host (bren) issue these commands:
$ ssh-copy-id -i ~/.ssh/id_rsa.pub username@host $ mkdir <-p> <mountpoint> $ sshfs <username>@<hostip>:/home <mountpoint>
where the ssh-copy-id copies your public ssh-key to the remote host and where ~/.ssh/id_rsa.pub is where your ssh keys resides. If there are no id_rsa.pub you should generate a pair of keys:
just hit enter to all prompts.
Then you shall create the mountpoint - that is the directory on where you will mount the remote filesystem. The -p creates all directories if they do not exists.
Finally issue the sshfs command to mount the remote file system on the mountpoint.
SSHFS in autofs
In order to have sshfs's automounted follow these instructions:
# groupadd fuse # usermod -a -G fuse <your-loginname>
Ensure that you have access to login on the remote server over ssh.
# ssh <your-loginname>@<remote-host>
If successfull without typing in password jump past the next commands. If you were prompted for the password issue
# ssh-copy-id -i ~/.ssh/rsa_id.pub <your-loginname>@<remote-host>
Re-test that you can login.
Create a directory to mount your remote filesystems on. Ex. ~/mounts
Next grep in /etc/passwd for your loginname
# grep /etc/passwd <your-loginname> <your-loginname>:x:500:500:Yourname:....
This indicates that your uid and gid is 500 or whatever you read on your *nix.
Add to the end of /etc/auto.master
/home/<your-loginname>/mounts /etc/auto.sshfs uid=500,gid=500,--timeout=60,--ghost
Now create /etc/auto.sshfs and add one line per remote share you want to mount.
<your-local-dir> -fstype=fuse,rw,nodev,nonempty,noatime,allow_other,max_read=65536 :sshfs\#<your-loginname>@<remote-host>\:
...more to come...
Tftp booting at home directly from your development host
Now the filesystem on the remote development host is available on your primary host (bren).
Since bren is accessible from the outer world through port 2222 with ssh you can mount your sshfs mounted share on bren on your home computer.
Home computer/tftpboot -- sshfs --> bren/your share -- sshfs --> development host/ /home/emb/uClinux-dist/images
and your EA board can boot directly from your development host, provided you install a tftp server on your local machine and let it share from /tftpboot. Remember to set up the EA board to work in your local network.
First follow the instructions above and mount the disk on your development host on a directory in your home directory.
The uid and gid's mentioned below may vary on your computer. Check locally in /etc/passwd and /etc/group your uid and gid.
local host$ sshfs -o uid=500 -o gid=500 -p 2222 <your login on bren>@bren.hih.au.dk:<your mounted disk from the development host> <mountpoint> local host$ ln -s <mountpoint>/<path-to-uClinux-dist>/images /tftpboot
If your tftp server is set up to serve from /tftpboot as suggested above your EA board now loads on your local network directly from the development host.
You can put the IP address for bren.hih.au.dk in your local /etc/hosts file.