Overview : Community : Archive : Tools : Showcase

Archives


- Beowulf
- Beowulf Announce
- Scyld-users
- Beowulf on Debian

[Beowulf] noob Root-NFS question

Many of your questions may have already been answered in earlier discussions or in the FAQ. The search results page will indicate current discussions as well as past list serves, articles, and papers.

Search

Michael Di Domenico mdidomenico4 at gmail.com
Sat May 9 18:51:25 PDT 2009 

Just a shot in the dark, but try exporting /diskless along with
/diskless/192.168.2.11

If i recall correctly NFS-Root in the kernel will try to mount
/diskless and then look for a directory with the corresponding IP
address

(i could be wrong though, i haven't done it in awhile)

On Sun, May 3, 2009 at 6:25 PM, Cocoy Dayao <cocoy.dayao at gmail.com> wrote:
> Dear list,
> I'm not sure if this is the right forum for this. But anyway here goes. i
> hope you could help me out. So I wanted to play around with building my own
> Beowulf Cluster. Yes, I know there are easier ways to do this. Automated
> tools like Caos Linux, etc. etc. Anyway, I wanted to use gentoo and learn
> from the ground up. I wanted a diskless client. So I booted a box via pxe,
> tftp and dhcp. it boots--- but can't seem to find NFS.
> And yes, i've googled. none have worked. I don't know what I'm missing.
> I get this:
> rpcbind: server 192.168.2.1 not responding, timed out
> Root-NFS: Unable to get nfsd port number from server, using default
> Looking up port of RPC 100005/1 on 192.168.2.1
> rpcbind: server 192.168.2.1 not responding, timed out
> Root-NFS: Unable to get mountd port number from server, using default
> Root-NFS: Server returned error -5 while mounting /diskless/192.168.2.11
> VFS: Unable to mount root fs via NFS, tryi9ng floppy.
> VFS: Cannot open root device "nfs" or unknown-block(2,0)
> Kernel Panic - not syncing: VFS unable to mount root fs on
> unknown-block(2,0)
> Both client and server have root nfs turned on it their respective kernel.
> i have turned off the firewall on the server and still get the same error.
> pxelinux.cfg is this:
> DEFAULT /kernel8
> APPEND root=/dev/nfs rw
> nfsroot=192.168.2.1:/diskless/192.168.2.11 init=sbin/init
> this is rpcinfo:
> talon dhcp # rpcinfo -p 192.168.2.1
>    program vers proto   port
>     100000    4   tcp    111  portmapper
>     100000    3   tcp    111  portmapper
>     100000    2   tcp    111  portmapper
>     100000    4   udp    111  portmapper
>     100000    3   udp    111  portmapper
>     100000    2   udp    111  portmapper
>     100024    1   udp  45975  status
>     100024    1   tcp  57882  status
>     100005    1   udp  57290  mountd
>     100005    1   tcp  50765  mountd
>     100005    2   udp  57290  mountd
>     100005    2   tcp  50765  mountd
>     100005    3   udp  57290  mountd
>     100005    3   tcp  50765  mountd
>     100003    2   udp   2049  nfs
>     100003    3   udp   2049  nfs
>     100021    1   udp  57739  nlockmgr
>     100021    3   udp  57739  nlockmgr
>     100021    4   udp  57739  nlockmgr
>     100021    1   tcp  45392  nlockmgr
>     100021    3   tcp  45392  nlockmgr
>     100021    4   tcp  45392  nlockmgr
>     100003    2   tcp   2049  nfs
>     100003    3   tcp   2049  nfs
> ps -aef | grep rpc is this:
> alon conf.d # ps -aef | grep rpc
> root      1101     2  0 18:14 ?        00:00:00 [rpciod/0]
> root      1102     2  0 18:14 ?        00:00:00 [rpciod/1]
> root      8332     1  0 18:15 ?        00:00:00 /sbin/rpcbind
> nobody    8356     1  0 18:15 ?        00:00:00 /sbin/rpc.statd --no-notify
> root      8379     1  0 18:15 ?        00:00:00 /usr/sbin/rpc.mountd
> root      8587  8560  0 18:22 pts/0    00:00:00 grep --colour=auto rpc
> tcpdump:
> 17), length 57) master.talon.11978 > node01.talon.57100: UDP, length 29
> 17:39:47.683582 IP (tos 0x0, ttl 64, id 53556, offset 0, flags [DF], proto
> UDP (17), length 52) master.talon.11974 > node01.talon.57099: UDP, length 24
> 17:39:48.451700 IP (tos 0x0, ttl 64, id 54326, offset 0, flags [DF], proto
> UDP (17), length 57) master.talon.11976 > node01.talon.57100: UDP, length 29
> 17:39:49.665576 IP (tos 0x0, ttl 64, id 63547, offset 0, flags [DF], proto
> UDP (17), length 57) master.talon.11978 > node01.talon.57100: UDP, length 29
> 17:39:49.762700 IP (tos 0x0, ttl 64, id 55637, offset 0, flags [DF], proto
> UDP (17), length 57) master.talon.11975 > node01.talon.57100: UDP, length 29
> 17:39:50.661534 arp who-has node01.talon tell master.talon
> 17:39:51.662530 arp who-has node01.talon tell master.talon
> 17:39:52.401575 IP (tos 0x0, ttl 64, id 58276, offset 0, flags [DF], proto
> UDP (17), length 57) master.talon.11977 > node01.talon.57100: UDP, length 29
> 17:39:52.662526 arp who-has node01.talon tell master.talon
> 17:39:54.471660 arp who-has node01.talon tell master.talon
> arp--- that's the point where kernel panic occurs.
> this is my /etc/exports file:
> #/etc/exports: NFS file systems being exported.  See exports(5).
> /diskless/192.168.2.11  *(rw,no_root_squash,no_all_squash,no_subtree_check)
> /opt    192.168.2.0/24(ro,no_root_squash,no_all_squash,no_subtree_check)
> /usr    192.168.2.0/24(ro,no_root_squash,no_all_squash,no_subtree_check)
> /home   192.168.2.0/24(rw,no_root_squash,no_all_squash,no_subtree_check)
> /var/log
>  192.168.2.11(rw,no_root_squash,no_all_squash,no_subtree_check)
> my dhcp configuration is this:
> # my dhcpd.conf for diskless clients
> allow booting;
> #allow bootp;
> #tftp
> next-server 192.168.2.1;
> #option root-path "/diskless/192.168.2.11";
> option space PXE;
> option PXE.mtftp-ip               code 1 = ip-address;
> option PXE.mtftp-cport            code 2 = unsigned integer 16;
> option PXE.mtftp-sport            code 3 = unsigned integer 16;
> option PXE.mtftp-tmout            code 4 = unsigned integer 8;
> option PXE.mtftp-delay            code 5 = unsigned integer 8;
> option PXE.discovery-control      code 6 = unsigned integer 8;
> option PXE.discovery-mcast-addr   code 7 = ip-address;
> subnet 192.168.2.0 netmask 255.255.255.128 {
>         range 192.168.2.11 192.168.2.20;
>         option domain-name-servers 192.168.2.1;
>         option domain-name "talon";
>         option routers 192.168.2.1;
>         option broadcast-address 192.168.2.195;
>         option root-path "192.168.2.1:/diskless/192.168.2.11";
>         default-lease-time 600;
>         max-lease-time 7200;
>         next-server 192.168.2.1;
>         class "pxeclient" {
>                 match if substring (option vendor-class-identifier, 0, 9) =
> "PXEClient";
>                 vendor-option-space PXE;
>                 option PXE.mtftp-ip 0.0.0.0;
>                 #option PXE.mtftp-ip 192.168.2.1;
>                 filename "pxelinux.0";
>         }
>       # host decleration for diskless node
>
>        host node01.talon {
>                                 hardware ethernet 00:1c:c0:4f:bd:e1;
>                                 fixed-address 192.168.2.11;
>         }
> }
> I also tried this: i used the same cable and attached it to my mac and
> mounted /diskless/192.168.2.11 nfs share which points to the diskless'
> client's root. i was able to mount it. So i know nfs works. And yes i made
> sure to turn off the mac's wireless... so only ethernet was plugged in.
> What did I miss?
> Appreciate, your advice
> Cocoy
> www.twitter.com/cocoy
> "People who are really serious about software should make their own
> hardware" -- Alan Kay
> _______________________________________________
> Beowulf mailing list, Beowulf at beowulf.org sponsored by Penguin Computing
> To change your subscription (digest mode or unsubscribe) visit
> http://www.beowulf.org/mailman/listinfo/beowulf
>
>

More information about the Beowulf mailing list

Home | Overview | Community | Archive | Tools | Showcase

Copyright © 2004 Beowulf.org. All Rights Reserved.