Are you running iptables or some other firewall on the head node?
If your switch is too smart, or if you are running on a university backbone
network, they sometimes block NFS as well.
On Thu, Aug 14, 2008 at 10:51 AM, Joseph Norris <[EMAIL PROTECTED]>wrote:
> Yes this is what I have been trying to do - this is in the fstab and
> when I do a mount -a or a mount of home I get the same error:
>
> >> mount: mount to NFS server 'nfs_oscar' failed: System Error: No
> > route to
> > >> host.
>
> Michael Edwards wrote:
> > Yes, on the client. You might also try "mount nfs_oscar:/home /home"
> > but it should pick that up from the fstab.
> >
> > On Thu, Aug 14, 2008 at 10:43 AM, Joseph Norris <[EMAIL PROTECTED]
> > <mailto:[EMAIL PROTECTED]>> wrote:
> >
> > Do you mean on one of the compute nodes?
> >
> > Michael Edwards wrote:
> > > What happens if you do "mount /home"?
> > >
> > > On Thu, Aug 14, 2008 at 10:40 AM, Joseph Norris
> > <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
> > > <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>>
> wrote:
> > >
> > > Hi Diego,
> > >
> > > Here is what I get:
> > >
> > > [EMAIL PROTECTED] root]# ssh oscarnode2
> > > Last login: Wed Aug 13 14:03:34 2008 from
> > madrid.ucmerced.edu <http://madrid.ucmerced.edu>
> > > <http://madrid.ucmerced.edu>
> > > [EMAIL PROTECTED] ~]# arp -an| grep 10.0.0.2
> > <http://10.0.0.2> <http://10.0.0.2>
> > > ? (10.0.0.2 <http://10.0.0.2> <http://10.0.0.2>) at
> > 00:1B:2F:CF:1E:66 [ether] on eth0
> > > [EMAIL PROTECTED] ~]# ping nfs_oscar
> > > PING madrid.ucmerced.edu <http://madrid.ucmerced.edu>
> > <http://madrid.ucmerced.edu> (10.0.0.2 <http://10.0.0.2>
> > > <http://10.0.0.2>) 56(84) bytes of data.
> > > 64 bytes from madrid.ucmerced.edu
> > <http://madrid.ucmerced.edu> <http://madrid.ucmerced.edu>
> > > (10.0.0.2 <http://10.0.0.2> <http://10.0.0.2>): icmp_seq=1
> > ttl=64
> > > time=0.149 ms
> > > 64 bytes from madrid.ucmerced.edu
> > <http://madrid.ucmerced.edu> <http://madrid.ucmerced.edu>
> > > (10.0.0.2 <http://10.0.0.2> <http://10.0.0.2>): icmp_seq=2
> > ttl=64
> > > time=0.200 ms
> > > 64 bytes from madrid.ucmerced.edu
> > <http://madrid.ucmerced.edu> <http://madrid.ucmerced.edu>
> > > (10.0.0.2 <http://10.0.0.2> <http://10.0.0.2>): icmp_seq=3
> > ttl=64
> > > time=0.215 ms
> > > 64 bytes from madrid.ucmerced.edu
> > <http://madrid.ucmerced.edu> <http://madrid.ucmerced.edu>
> > > (10.0.0.2 <http://10.0.0.2> <http://10.0.0.2>): icmp_seq=4
> > ttl=64
> > > time=0.224 ms
> > >
> > >
> > > Diego M. Vadell wrote:
> > > > Hi Joseph,
> > > > AFAIK "No route to host" means it doesn't even got an ARP
> > > response.
> > > > Can you retry and run "arp -an| grep 10.0.0.2
> > <http://10.0.0.2> <http://10.0.0.2>"
> > > to see if it got the
> > > > right MAC address? It's very strange that you can ping the
> > > headnode from
> > > > the compute node. Are you sure you are running "ping
> > nfs_oscar"?
> > > What
> > > > does "arp -an| grep 10.0.0.2 <http://10.0.0.2>
> > <http://10.0.0.2>" says after that?
> > > >
> > > > HTH,
> > > > -- Diego.
> > > >
> > > > Joseph Norris wrote:
> > > >
> > > >> off my node's fstab
> > > >>
> > > >> nfs_oscar:/home /home nfs rw 0 0
> > > >>
> > > >> when ssh to that node and do mount -a
> > > >>
> > > >> I get the following:
> > > >>
> > > >> mount: mount to NFS server 'nfs_oscar' failed: System
> > Error: No
> > > route to
> > > >> host.
> > > >>
> > > >> nfs is running
> > > >>
> > > >> I can ping headnode from compute node
> > > >>
> > > >> /etc/hosts on head node has
> > > >>
> > > >> 10.0.0.2 <http://10.0.0.2> <http://10.0.0.2>
> > madrid.ucmerced.edu <http://madrid.ucmerced.edu>
> > > <http://madrid.ucmerced.edu> nfs_oscar
> > > >>
> > > >> headnode route table:
> > > >>
> > > >> Destination Gateway Genmask Flags Metric
> > > Ref Use
> > > >> Iface
> > > >> 10.0.0.0 <http://10.0.0.0> <http://10.0.0.0>
> > 0.0.0.0 <http://0.0.0.0> <http://0.0.0.0>
> > > 255.255.255.0 <http://255.255.255.0>
> > <http://255.255.255.0> U 0 0 0
> > > eth1
> > > >> 169.236.128.0 <http://169.236.128.0>
> > <http://169.236.128.0> 0.0.0.0 <http://0.0.0.0> <http://0.0.0.0>
> > > 255.255.254.0 <http://255.255.254.0>
> > <http://255.255.254.0> U 0 0
> > > 0 eth0
> > > >> 169.254.0.0 <http://169.254.0.0> <http://169.254.0.0>
> > 0.0.0.0 <http://0.0.0.0> <http://0.0.0.0>
> > > 255.255.0.0 <http://255.255.0.0> <http://255.255.0.0>
> > U 0 0 0
> > > eth1
> > > >> 224.0.0.0 <http://224.0.0.0> <http://224.0.0.0>
> > 0.0.0.0 <http://0.0.0.0> <http://0.0.0.0>
> > > 240.0.0.0 <http://240.0.0.0> <http://240.0.0.0> U
> > 0 0 0 eth1
> > > >> 0.0.0.0 <http://0.0.0.0> <http://0.0.0.0>
> > 169.236.128.1 <http://169.236.128.1>
> > > <http://169.236.128.1> 0.0.0.0 <http://0.0.0.0>
> > <http://0.0.0.0> UG 0
> > > 0 0 eth0
> > > >>
> > > >>
> > > >> Is there something that I am missing?
> > > >>
> > > >>
> > > >>
> > > >>
> > > >>
> > > >
> > > >
> > > >
> > >
> >
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> > > --
> > >
> > >
> > > Joseph Norris
> > > Programmer III/System Administrator
> > > UC Merced School of Natural Sciences
> > >
> > > Phone: 209-228-4576
> > > Cell: 209-201-3410
> > >
> > >
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> >
> > --
> >
> >
> > Joseph Norris
> > Programmer III/System Administrator
> > UC Merced School of Natural Sciences
> >
> > Phone: 209-228-4576
> > Cell: 209-201-3410
> >
> >
> >
> >
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>
> --
>
>
> Joseph Norris
> Programmer III/System Administrator
> UC Merced School of Natural Sciences
>
> Phone: 209-228-4576
> Cell: 209-201-3410
>
>
>
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