Well, I found the problem very nasty and in my previous posts, I mentioned some of them. The big problem: when the clients boots, it doesn't automatically mount the shared folders via /etc/fstab. However after login to client, I can mount the folder manually with "sudo mount -t nfs server:/opt /opt" I really don't know why fstab doesn't work. I searched a lot.... some say disbale IPV6. I did that but still have that problem. So how can I tell nfs (on server or client) to be verbose so that I can see what is going on and what is not going on. Any feedback and comment is welcomed. // Naderan *Mahmood; From: Brian R Cowan <brcowan@xxxxxxxxxx> To: Mahmood Naderan <nt_mahmood@xxxxxxxxx> Cc: nfs <linux-nfs@xxxxxxxxxxxxxxx>; linux-nfs-owner@xxxxxxxxxxxxxxx Sent: Thursday, May 5, 2011 6:40 PM Subject: Re: debugging nfs It would probably help to explain the problem so you can get targeted debugging assistance... ================================================================= Brian Cowan Advisory Software Engineer ClearCase Software Advisory Team (SWAT) Rational Software IBM Software Group 550 King St Littleton, MA 01460 Phone: 1.978.899.9471 Web: http://www.ibm.com/software/rational/support/ From: Mahmood Naderan <nt_mahmood@xxxxxxxxx> To: nfs <linux-nfs@xxxxxxxxxxxxxxx>, Date: 05/05/2011 09:30 AM Subject: debugging nfs Sent by: linux-nfs-owner@xxxxxxxxxxxxxxx Hi, I didn't find a method for debugging NFS for debain based systems. Is there any verbose switch or debuging method for that? // Naderan *Mahmood; -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html