I have a really weird one here.

Boot up CentOS 5.x, stop grub and add a 1 to the end of the kernel line to boot into run level 1. Do the following:

service network start
(no problem)
mount -t nfs 10.1.1.1:/nfsshare /mnt
<wait eternity -- it hangs>

To fix this problem....

CTRL+C back to the Command Line
init 3
login
mount -t nfs 10.1.1.1:/nfsshare /mnt
(success)
init 1
(wait for command line to come back)
service network start
(success)
ls /mnt
(it's empty)
mount -t nfs 10.1.1.1:/nfsshare /mnt
(*success*)

I am at a loss to explain this one. WHat if I can't boot to RL 3 and I need to use NFS?

I've tried booting to RL1 and running modprobe nfs / modprobe nfsd and I still get the hanging behavior.

Ideas?

Hi.

You'll need the nfslock and portmap services to be started to be an NFS client. Just start those (after starting network) from runlevel 1 and you should be OK.

Dave

Wow. Great suggestion. But it hangs at the mount. There must be another service not loading. I will

<booted machine, added 1 to kernel command in grub to stop at RL 1>
#service network start [ ok ]
#service portmap start [ ok ]
#service nfslock start [ ok ]
#mount 10.1.1.1:/nfsshare /mnt
<nothing happens... hangs>
#ping 10.1.1.1 (success)

If you still feel like cracking this one, I can give you a tcpdump from both boxes during the attempt.

It's really burning me up that I can't figure out why it won't mount. I've run a ps -ef and I'm going to compare the ps -ef from when it works in RL 1 and when it doesn't work in RL 1 after mapping in RL 3 and backing down to RL 1. Maybe something isn't being killed that stays in memory.

I love cracking these sort of problems.

I will post back my finds.

Hmmm.

Try switching on rpcgssd and rpcidmapd as well.

Dave

I could have sworn I posted this and today I needed the info again.

The fix is what Dave gave above.

Boot, add the 1 to grub to get into Runlevel 1 then:
#service network start [ ok ]
#service portmap start [ ok ]
#service nfslock start [ ok ]
#service rpcgssd start [ ok ]
#service rpcidmapd start [ ok ]

Many thanks to Dave for the tip above. I have to ask.... Dave, if you read this... /how/ did you know that?

I'm the illegitimate love child of Dennis Ritchie and Ken Thompson, so I've been imbued with a mystical energy and an innate knowledge of Unix.*

Dave



* that, and NFS uses RCP so I did 'chkconfig --list | grep 3:on | grep -i rpc' on a machine that NFS worked on. Don't tell anyone though - Dennis and Ken would be really disappointed.