On Wed, 2007-03-21 at 19:01 -0600, David G. Miller wrote:
> Simon Slater <pyevet@xxxxxxxxxxx> wrote:
> > I have 3 computers A, B & C connected through an hub. B is a file
> > server running FC1, A & C have new installs of FC6. A & C can mount
> > shares on B. However showmount -e gives:
> >
> > # mount clntudp_create: RPC: Program not registered
> >
> > from B to either of A or C; from C to A; A to C or itself.
> >
> > The mount -t nfs C:/share /mnt command from A returns:
> >
> > # mount: mount to NFS server 'C' failed: System Error: No route to host.
> >
> > similarly fron C to A. Yet from server B the same command to either A
> > or C returns:
> >
> > # mount: RPC: Remote system error - no route to host.
> >
> > Each box can ping the others, the /etc/hosts and /etc/exports files
> > seem to be in order. What am I missing?
> >
> > Regards
> > Simon Slater
> NFS of FC1 vintage would probably still be using UDP. Not sure if NFS
> over TCP was even an option. Check your firewall rules on B to see what
> it does with UDP packets. Ditto for A and C since B could be accepting
> the packets but A and C throw them away at their firewall. tracepath
> (like traceroute but for UDP packets) may give you some additional
> information.
>
> It sounds like B has been around for a while and A and C are relatively
> new installs. Is this the case? Did this just come up when A and C got
> an FC6 install?
>
> Cheers,
> Dave
Here is the output of tracepath from box A:
[root@A ~]# tracepath B
1: A (192.168.0.3) 1.517ms pmtu
1500
1: B (192.168.0.4) 0.811ms reached
Resume: pmtu 1500 hops 1 back 1
[root@A ~]# tracepath C
1: A (192.168.0.3) 1.718ms pmtu
1500
1: C (192.168.0.5) 0.864ms !H
Resume: pmtu 1500
[root@A ~]#
>From box B the first line is 1?:[LOCALHOST]... and the second line ends
with !H when pointed to A or C. The tracepath output from C to B is
similar to the clip above from box A. I'm not sure how helpful this is.
This has only been an issue since C came online a couple of weeks ago.
A & B are basically working as they were.
Boxes B & C are both newly aquired (freinds were moving and found them
in the back shed) but all are PII's. B was setup to store A's files
while upgrading it from FC3 to FC6, but hard disk space was limited so I
did a minimal FC1 install as a temporary measure (that was 3 months
ago). These 3 (and 4 more I've yet to look at) are destined for a LTSP
network spanning office and home.
Regards
Simon
