NFS mount on EA board
Exporting a directory from the development host and mounting this directory eases the development process.
Configuration on devhost
In /etc/exports add this line per exported directory
where directory is the directory you want to export to the net and the hostname is for instance an IP address of your EA board. The options can be rw,sync.
Change to suit your requirements.
You'll have to enable a few ports extra in the NFS configuration file: /etc/sysconfig/nfs
Remove the remarks (#) on the lines with these port numbers:
LOCKD_TCPPORT=32803 LOCKD_UDPPORT=32769 MOUNTD_PORT=892 STATD_PORT=662
And every time you have changed in /etc/exports or other configuration files you have to reload nfs service.
/sbin/service nfs reload
Configure the firewall to allow NFS traffic to come through
Select Customize and set a star in the NFS4 field and add in the field for other ports the following ports:
111:tcp 111:udp 32803:tcp 32803:udp 32769:tcp 32769:udp 892:tcp 892:udp 662:tcp 662:udp
Ensure that nfs is running
$ service nfs stat rpc.mountd is stopped nfsd is stopped rpc.rquotad is stopped
it is not - to start it issue
$ chkconfig --list|grep nfs nfs 0:off 1:off 2:off 3:off 4:off 5:off 6:off nfslock 0:off 1:off 2:off 3:on 4:on 5:on 6:off $ chkconfig --level 345 nfs on $ service nfs start Starting NFS services: [ OK ] Starting NFS quotas: [ OK ] Starting NFS daemon: [ OK ] Starting NFS mountd: [ OK ] Stopping RPC idmapd: [ OK ] Starting RPC idmapd: [ OK ]
Test from bren
Provided you have included bren (10.1.18.73) in your exports on the devhost you can check if your set-up is working correct by issuing this command on your bren login:
[klausk@bren ~]$ /usr/sbin/showmount -e 10.1.18.212 Export list for 10.1.18.212: /home/nfsexport 10.1.18.73,10.2.2.82
Mount on the EA board
On the EA board issue this command:
mount -t nfs -o nolock,rsize=4096,wsize=4096 < source host>:< source export directory> <destination directory>
where the "< source host>" can be an IP address, the "< source directory>" is the directory that was exported from the development host and "<destination directory>" is the directory on where the exported directory shall be mounted.
Example: mount -t nfs -o nolock,rsize=4096,wsize=4096 192.168.0.100:/home/klaus/exportdir /mnt
Edit the export files as shown above.
Edit the /etc/sysconfig/nfs ensuring the correct ports are used.
# TCP port rpc.lockd should listen on. LOCKD_TCPPORT=32803 # UDP port rpc.lockd should listen on. LOCKD_UDPPORT=32769 MOUNTD_PORT=892 STATD_PORT=662 STATD_OUTGOING_PORT=2020
Open the the above ports in the firewall-config program.
Finally enable and start the nfs service
]$ systemctl enable nfs.target ]$ systemctl start nfs ]$ systemctl status nfs
On the remote add a line to /etc/fstab as described above and mount it
]$ mount -av
the -a instructs mount to (re)mount everything and the -v gives a verbose output.