There are also some general NFS troubleshooting suggestions here
http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/com.ibm.aix.commadmn/doc/commadmndita/nfs_troublesh.htm
On Thu, Aug 14, 2008 at 10:58 AM, Michael Edwards <[EMAIL PROTECTED]>wrote:
> 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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>> > > > _______________________________________________
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>> > > > https://lists.sourceforge.net/lists/listinfo/oscar-users
>> > > >
>> > >
>> > > --
>> > >
>> > >
>> > > Joseph Norris
>> > > Programmer III/System Administrator
>> > > UC Merced School of Natural Sciences
>> > >
>> > > Phone: 209-228-4576
>> > > Cell: 209-201-3410
>> > >
>> > >
>> > >
>> > >
>> >
>> -------------------------------------------------------------------------
>> > > This SF.Net email is sponsored by the Moblin Your Move
>> > Developer's
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>> > > Build the coolest Linux based applications with Moblin SDK &
>> win
>> > > great prizes
>> > > Grand prize is a trip for two to an Open Source event
>> > anywhere in
>> > > the world
>> > > http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> > <http://moblin-contest.org/redirect.php?banner_id=100&url=/>
>> > > <http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> > <http://moblin-contest.org/redirect.php?banner_id=100&url=/>>
>> > > _______________________________________________
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>> > > Oscar-users@lists.sourceforge.net
>> > <mailto:Oscar-users@lists.sourceforge.net>
>> > > <mailto:Oscar-users@lists.sourceforge.net
>> > <mailto:Oscar-users@lists.sourceforge.net>>
>> > > https://lists.sourceforge.net/lists/listinfo/oscar-users
>> > >
>> > >
>> > >
>> >
>> ------------------------------------------------------------------------
>> > >
>> > >
>> >
>> -------------------------------------------------------------------------
>> > > This SF.Net email is sponsored by the Moblin Your Move
>> > Developer's challenge
>> > > Build the coolest Linux based applications with Moblin SDK & win
>> > great prizes
>> > > Grand prize is a trip for two to an Open Source event anywhere
>> > in the world
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>> > >
>> >
>> ------------------------------------------------------------------------
>> > >
>> > > _______________________________________________
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>> > > https://lists.sourceforge.net/lists/listinfo/oscar-users
>> > >
>> >
>> > --
>> >
>> >
>> > Joseph Norris
>> > Programmer III/System Administrator
>> > UC Merced School of Natural Sciences
>> >
>> > Phone: 209-228-4576
>> > Cell: 209-201-3410
>> >
>> >
>> >
>> >
>> -------------------------------------------------------------------------
>> > This SF.Net email is sponsored by the Moblin Your Move Developer's
>> > challenge
>> > Build the coolest Linux based applications with Moblin SDK & win
>> > great prizes
>> > Grand prize is a trip for two to an Open Source event anywhere in
>> > the world
>> > http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> > <http://moblin-contest.org/redirect.php?banner_id=100&url=/>
>> > _______________________________________________
>> > Oscar-users mailing list
>> > Oscar-users@lists.sourceforge.net
>> > <mailto:Oscar-users@lists.sourceforge.net>
>> > https://lists.sourceforge.net/lists/listinfo/oscar-users
>> >
>> >
>> > ------------------------------------------------------------------------
>> >
>> >
>> -------------------------------------------------------------------------
>> > This SF.Net email is sponsored by the Moblin Your Move Developer's
>> challenge
>> > Build the coolest Linux based applications with Moblin SDK & win great
>> prizes
>> > Grand prize is a trip for two to an Open Source event anywhere in the
>> world
>> > http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> > ------------------------------------------------------------------------
>> >
>> > _______________________________________________
>> > Oscar-users mailing list
>> > Oscar-users@lists.sourceforge.net
>> > https://lists.sourceforge.net/lists/listinfo/oscar-users
>> >
>>
>> --
>>
>>
>> Joseph Norris
>> Programmer III/System Administrator
>> UC Merced School of Natural Sciences
>>
>> Phone: 209-228-4576
>> Cell: 209-201-3410
>>
>>
>>
>> -------------------------------------------------------------------------
>> This SF.Net email is sponsored by the Moblin Your Move Developer's
>> challenge
>> Build the coolest Linux based applications with Moblin SDK & win great
>> prizes
>> Grand prize is a trip for two to an Open Source event anywhere in the
>> world
>> http://moblin-contest.org/redirect.php?banner_id=100&url=/
>> _______________________________________________
>> Oscar-users mailing list
>> Oscar-users@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/oscar-users
>>
>
>
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