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CentOS NFS Problems
Hello,
I'm trying to use an CentOS 5.5 with two 2TB stand alone disks as a NFS Server.
When i try to mount an exported partition, i receive the follow error in /etc/messages:
Sep 4 16:21:59 storage mountd[3170]: authenticated mount request from 189.1.169.52:882 for /backup/ded01.bruno-fernan
Sep 4 16:22:01 storage kernel: RPC: bad TCP reclen 0x00100098 (large)
Sep 4 16:22:34 storage last message repeated 224 times
Sep 4 16:23:35 storage last message repeated 391 times
Sep 4 16:24:36 storage last message repeated 326 times
At the client side, the command not end. (Obs: on client side has no Firewall rules)
root@ded [~]# mount -t nfs 189.1.169.14:/backup/ded01
There are some another until information of the server:
[root@storage ~]# rpcinfo -p
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 799 status
100024 1 tcp 802 status
100011 1 udp 788 rquotad
100011 2 udp 788 rquotad
100011 1 tcp 791 rquotad
100011 2 tcp 791 rquotad
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100021 1 udp 51853 nlockmgr
100021 3 udp 51853 nlockmgr
100021 4 udp 51853 nlockmgr
100003 2 tcp 2049 nfs
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100021 1 tcp 33205 nlockmgr
100021 3 tcp 33205 nlockmgr
100021 4 tcp 33205 nlockmgr
100005 1 udp 802 mountd
100005 1 tcp 805 mountd
100005 2 udp 802 mountd
100005 2 tcp 805 mountd
100005 3 udp 802 mountd
100005 3 tcp 805 mountd
[root@storage ~]#
The contents of /etc/exports:
/backup/ded01.bruno-fernan
[root@storage ~]# showmount --exports
Export list for storage.maxihost.com.br:
/backup/ded01.bruno-fernan
[root@storage ~]#
[root@storage ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 19G 1.4G 17G 8% /
/dev/sda5 1.8T 196M 1.7T 1% /backup
/dev/sdb1 1.8T 123G 1.6T 8% /backup2
/dev/sda1 487M 22M 440M 5% /boot
tmpfs 1013M 0 1013M 0% /dev/shm
[root@storage ~]#
[root@storage ~]# uname -a
Linux storage.maxihost.com.br 2.6.18-194.11.3.el5 #1 SMP Mon Aug 30 16:23:24 EDT 2010 i686 i686 i386 GNU/Linux
[root@storage ~]#
I'm trying to use an CentOS 5.5 with two 2TB stand alone disks as a NFS Server.
When i try to mount an exported partition, i receive the follow error in /etc/messages:
Sep 4 16:21:59 storage mountd[3170]: authenticated mount request from 189.1.169.52:882 for /backup/ded01.bruno-fernan
Sep 4 16:22:01 storage kernel: RPC: bad TCP reclen 0x00100098 (large)
Sep 4 16:22:34 storage last message repeated 224 times
Sep 4 16:23:35 storage last message repeated 391 times
Sep 4 16:24:36 storage last message repeated 326 times
At the client side, the command not end. (Obs: on client side has no Firewall rules)
root@ded [~]# mount -t nfs 189.1.169.14:/backup/ded01
There are some another until information of the server:
[root@storage ~]# rpcinfo -p
program vers proto port
100000 2 tcp 111 portmapper
100000 2 udp 111 portmapper
100024 1 udp 799 status
100024 1 tcp 802 status
100011 1 udp 788 rquotad
100011 2 udp 788 rquotad
100011 1 tcp 791 rquotad
100011 2 tcp 791 rquotad
100003 2 udp 2049 nfs
100003 3 udp 2049 nfs
100003 4 udp 2049 nfs
100021 1 udp 51853 nlockmgr
100021 3 udp 51853 nlockmgr
100021 4 udp 51853 nlockmgr
100003 2 tcp 2049 nfs
100003 3 tcp 2049 nfs
100003 4 tcp 2049 nfs
100021 1 tcp 33205 nlockmgr
100021 3 tcp 33205 nlockmgr
100021 4 tcp 33205 nlockmgr
100005 1 udp 802 mountd
100005 1 tcp 805 mountd
100005 2 udp 802 mountd
100005 2 tcp 805 mountd
100005 3 udp 802 mountd
100005 3 tcp 805 mountd
[root@storage ~]#
The contents of /etc/exports:
/backup/ded01.bruno-fernan
[root@storage ~]# showmount --exports
Export list for storage.maxihost.com.br:
/backup/ded01.bruno-fernan
[root@storage ~]#
[root@storage ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda2 19G 1.4G 17G 8% /
/dev/sda5 1.8T 196M 1.7T 1% /backup
/dev/sdb1 1.8T 123G 1.6T 8% /backup2
/dev/sda1 487M 22M 440M 5% /boot
tmpfs 1013M 0 1013M 0% /dev/shm
[root@storage ~]#
[root@storage ~]# uname -a
Linux storage.maxihost.com.br 2.6.18-194.11.3.el5 #1 SMP Mon Aug 30 16:23:24 EDT 2010 i686 i686 i386 GNU/Linux
[root@storage ~]#
You are using a public ip address. Usually NFS is on a private address. The lock ports are now randomly selected. You must make sure machines that access the NFS volume are using the same ports. I can't explain exactly how to do this in a post here, because I don't have enough space. There are plenty of tutorials available online.
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CORRECTION to my previous post.
mount -t nfs proto=udp nfsserver:/export/path /mountpoint
----
mount -t nfs proto=udp nfsserver:/export/path /mountpoint
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try turning off jumbo frames and testing if the problem goes away