Linux - NewbieThis Linux forum is for members that are new to Linux.
Just starting out and have a question?
If it is not in the man pages or the how-to's this is the place!
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Introduction to Linux - A Hands on Guide
This guide was created as an overview of the Linux Operating System, geared toward new users as an exploration tour and getting started guide, with exercises at the end of each chapter.
For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration. This book contains many real life examples derived from the author's experience as a Linux system and network administrator, trainer and consultant. They hope these examples will help you to get a better understanding of the Linux system and that you feel encouraged to try out things on your own.
Click Here to receive this Complete Guide absolutely free.
Client is running Oracle VM Server 2.2.1 (kernel 2.6.18-188.8.131.52.37.el5xen). Storage is a NetApp 3210 (NFS configured to use TCP).
Iptables on client has udp and tcp ports 111, 2049 and the NFS server ports opened. Info retrieved using:
rpcinfo -p NetApp
When trying a manual mount ...
#mount -v NetApp:/share /mnt
mount: no type was given - I'll assume nfs because of the colon
mount: trying NetApp prog 100003 vers 3 prot tcp port 2049
mount: mount to NFS server 'NetApp' failed: timed out (retrying).
... but when using the proto=tcp option, it works ...
#mount -v -o proto=tcp NetApp:/share /mnt
... stopping iptables also works (I can manually mount the share without using proto=tcp).
Is the mounting process somehow trying to negotiate first using udp which the Netapp doesn't respond and hence it fails by timing out?
Can I configure iptables such that I don't have to use the proto=tcp option? Or is there another configuration file I can tweak so that I don't have to use the proto=tcp option?
that's not a newbie question! would be better in network or server forum.
Anyway, you may want to take some network traces and analyze them (tcpdump and/or wireshark).
From that you should know if the server is answering, and maybe even decode the answer and get a clue on what is happening.
If you suspect firewall blocks too much, then maybe run without a firewall while experimenting, and compare the network traces with and without firewall. You know if your network is a dangerous place or not for experimenting without a firewall.