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Subject: RE: Need a help on dhcp issue
Date: Fri, 1 Feb 2008 08:43:31 -0700
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Thread-Topic: Need a help on dhcp issue
Thread-Index: Achkab9gDDofk2aGSgqPS1qhCq33fAAfp5iE
From: "Sripal Surendiran (HCL)" <sripal.surendiran@onstor.com>
To: "Andy Sharp" <andy.sharp@onstor.com>

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Thanks Andy,
=20
I was confused it given displayed me the bp0 interface. Let me look for =
any Debian Linux available here and try it out.
=20
Thanks,
Sripal.

________________________________

From: Andy Sharp
Sent: Fri 2/1/2008 6:01 AM
To: Sripal Surendiran (HCL)
Subject: Re: Need a help on dhcp issue



On Tue, 29 Jan 2008 06:38:39 -0800 "Sripal Surendiran (HCL)"
<sripal.surendiran@onstor.com> wrote:

> Hi Andy,
>=20
> I am working on Cougar FTI and facing some issue with running DHCP
> client in the Bobcat linux filer ( I don't have cougar system :-( ).
> Following error message got displayed, when DHCP client tried to
> contact the DHCP server.
> webui8:~# /etc/init.d/networking start
> Configuring network interfaces...Internet Systems Consortium DHCP
> Client V3.0.4 Copyright 2004-2006 Internet Systems Consortium.
> All rights reserved.
> For info, please visit http://www.isc.org/sw/dhcp/
> bp0: unknown hardware address type 65535

I checked, and this is a standard setting.  ifconfig command for
example recognizes the ARP_NONE aspect of this interface.
=20
> Filer hangs after the above message. Even my console is not
> responding. I have to hard reboot the filer.
> Details of my configuration file

Pfft, damn, now I realize what's wrong.  You are running on a bobcat?
That means you are running NFS root.  dhclient will try to take the
interface down and back up again, but when it goes down, there goes
your root filesystem, and the system hangs.  You can't run dhclient
when running NFS root.  Under 2.4 kernel, I have managed to get a shell
script to be able to issue an ifconfig down command immediately
followed by an ifconfig up with the same IP address and not hang an NFS
root system, but I cannot duplicate that in 2.6, and besides, dhclient
hangs because it's trying to do all kinds of IO to various log files
and stuff after it takes the interface down.

Cougars are very tight right now -- even I don't have a cougar that
has working TXRX or FP processors.  So for now, try to extrapolate
from the dhcp setup used to boot the bobcat and assume the equivalent
setup in dhclient.conf will work ~:^)

Cheers,

a

> 1. /etc/network/interfaces
>=20
> # The loopback network interface
> auto lo
> iface lo inet loopback
>
> # The primary network interface
> auto eth0
> iface eth0 inet dhcp
> #  address 10.25.0.8
> #  netmask 255.255.0.0
> #  gateway 10.25.0.1
>
> 2. /etc/dhcp3/dhclient.conf
>
> timeout 60;
> retry 60;
> reboot 10;
> select-timeout 5;
> initial-interval 2;
>
>
> interface "eth0" {
>         send dhcp-client-identifier 0:7:34:1:f0:0;
>         send dhcp-lease-time  -1;
>         request subnet-mask, routers,
> domain-name,domain-name-servers, host-name, ntp-servers; require
> host-name; script "/sbin/dhclient-script";
> }
>
> alias {
>         interface "eth0";
>         fixed-address 172.18.250.250;
>         option subnet-mask 255.255.0.0;
> }
>
> Whether I am missing something? Any help on this regards will be
> grateful.
>
> Thanks in advance,
> Sripal.
>
> ________________________________
>
> From: Brian DeForest
> Sent: Fri 1/18/2008 6:58 AM
> To: Sudharsan Srinivasan-TLS,Chennai; Sripal Surendiran (HCL)
> Cc: Charissa Willard
> Subject: Cougar FTI
>
>
>
> There have been some discussions about who should own the Cougar FTI
> port/development.  Since this was implemented in R98, after the
> Cougar porting was started, it wasn't really clear whether the
> offshore team or Cougar team should own this.  After some
> discussions, it was decided that the offshore team would be the right
> team to implement this given your familiarity with the R98 work.=20
>
> Currently the Cougar FTI is based on the "old" pre-R98 FTI so the
> porting/development of Cougar (R98-based) FTI is not gating any
> developers.  Also this is not a requirement for the upcoming Cougar
> beta in February.=20
>
> We'll need a schedule for the work.  Tim requested this by Monday if
> possible, however let me know if that's feasible, or an alternative
> date for a schedule.  Andy Sharp is the primary Linux technical
> contact, and feel free to consult with Charissa (or I) as needed also.
>
> Thanks.
> Brian
>



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<HTML dir=3Dltr><HEAD><TITLE>Re: Need a help on dhcp issue</TITLE>=0A=
<META http-equiv=3DContent-Type content=3D"text/html; charset=3Dunicode">=0A=
<META content=3D"MSHTML 6.00.6000.16587" name=3DGENERATOR></HEAD>=0A=
<BODY>=0A=
<DIV id=3DidOWAReplyText30877 dir=3Dltr>=0A=
<DIV dir=3Dltr><FONT face=3DArial color=3D#000000 size=3D2>Thanks =
Andy,</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>I was confused it given =
displayed me the bp0 interface. Let me&nbsp;look for any&nbsp;Debian =
Linux available here and try it out.</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>Thanks,</FONT></DIV>=0A=
<DIV dir=3Dltr><FONT face=3DArial size=3D2>Sripal.</FONT></DIV></DIV>=0A=
<DIV dir=3Dltr><BR>=0A=
<HR tabIndex=3D-1>=0A=
<FONT face=3DTahoma size=3D2><B>From:</B> Andy Sharp<BR><B>Sent:</B> Fri =
2/1/2008 6:01 AM<BR><B>To:</B> Sripal Surendiran =
(HCL)<BR><B>Subject:</B> Re: Need a help on dhcp =
issue<BR></FONT><BR></DIV>=0A=
<DIV>=0A=
<P><FONT size=3D2>On Tue, 29 Jan 2008 06:38:39 -0800 "Sripal Surendiran =
(HCL)"<BR>&lt;sripal.surendiran@onstor.com&gt; wrote:<BR><BR>&gt; Hi =
Andy,<BR>&gt;&nbsp;<BR>&gt; I am working on Cougar FTI and facing some =
issue with running DHCP<BR>&gt; client in the Bobcat linux filer ( I =
don't have cougar system :-( ).<BR>&gt; Following error message got =
displayed, when DHCP client tried to<BR>&gt; contact the DHCP =
server.<BR>&gt; webui8:~# /etc/init.d/networking start<BR>&gt; =
Configuring network interfaces...Internet Systems Consortium =
DHCP<BR>&gt; Client V3.0.4 Copyright 2004-2006 Internet Systems =
Consortium.<BR>&gt; All rights reserved.<BR>&gt; For info, please visit =
<A =
href=3D"http://www.isc.org/sw/dhcp/">http://www.isc.org/sw/dhcp/</A><BR>&=
gt; bp0: unknown hardware address type 65535<BR><BR>I checked, and this =
is a standard setting.&nbsp; ifconfig command for<BR>example recognizes =
the ARP_NONE aspect of this interface.<BR>&nbsp;<BR>&gt; Filer hangs =
after the above message. Even my console is not<BR>&gt; responding. I =
have to hard reboot the filer.<BR>&gt; Details of my configuration =
file<BR><BR>Pfft, damn, now I realize what's wrong.&nbsp; You are =
running on a bobcat?<BR>That means you are running NFS root.&nbsp; =
dhclient will try to take the<BR>interface down and back up again, but =
when it goes down, there goes<BR>your root filesystem, and the system =
hangs.&nbsp; You can't run dhclient<BR>when running NFS root.&nbsp; =
Under 2.4 kernel, I have managed to get a shell<BR>script to be able to =
issue an ifconfig down command immediately<BR>followed by an ifconfig up =
with the same IP address and not hang an NFS<BR>root system, but I =
cannot duplicate that in 2.6, and besides, dhclient<BR>hangs because =
it's trying to do all kinds of IO to various log files<BR>and stuff =
after it takes the interface down.<BR><BR>Cougars are very tight right =
now -- even I don't have a cougar that<BR>has working TXRX or FP =
processors.&nbsp; So for now, try to extrapolate<BR>from the dhcp setup =
used to boot the bobcat and assume the equivalent<BR>setup in =
dhclient.conf will work ~:^)<BR><BR>Cheers,<BR><BR>a<BR><BR>&gt; 1. =
/etc/network/interfaces<BR>&gt;&nbsp;<BR>&gt; # The loopback network =
interface<BR>&gt; auto lo<BR>&gt; iface lo inet loopback<BR>&gt;<BR>&gt; =
# The primary network interface<BR>&gt; auto eth0<BR>&gt; iface eth0 =
inet dhcp<BR>&gt; #&nbsp; address 10.25.0.8<BR>&gt; #&nbsp; netmask =
255.255.0.0<BR>&gt; #&nbsp; gateway 10.25.0.1<BR>&gt;<BR>&gt; 2. =
/etc/dhcp3/dhclient.conf<BR>&gt;<BR>&gt; timeout 60;<BR>&gt; retry =
60;<BR>&gt; reboot 10;<BR>&gt; select-timeout 5;<BR>&gt; =
initial-interval 2;<BR>&gt;<BR>&gt;<BR>&gt; interface "eth0" =
{<BR>&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; send =
dhcp-client-identifier =
0:7:34:1:f0:0;<BR>&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
send dhcp-lease-time&nbsp; =
-1;<BR>&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; request =
subnet-mask, routers,<BR>&gt; domain-name,domain-name-servers, =
host-name, ntp-servers; require<BR>&gt; host-name; script =
"/sbin/dhclient-script";<BR>&gt; }<BR>&gt;<BR>&gt; alias =
{<BR>&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; interface =
"eth0";<BR>&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
fixed-address =
172.18.250.250;<BR>&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
option subnet-mask 255.255.0.0;<BR>&gt; }<BR>&gt;<BR>&gt; Whether I am =
missing something? Any help on this regards will be<BR>&gt; =
grateful.<BR>&gt;<BR>&gt; Thanks in advance,<BR>&gt; =
Sripal.<BR>&gt;<BR>&gt; ________________________________<BR>&gt;<BR>&gt; =
From: Brian DeForest<BR>&gt; Sent: Fri 1/18/2008 6:58 AM<BR>&gt; To: =
Sudharsan Srinivasan-TLS,Chennai; Sripal Surendiran (HCL)<BR>&gt; Cc: =
Charissa Willard<BR>&gt; Subject: Cougar =
FTI<BR>&gt;<BR>&gt;<BR>&gt;<BR>&gt; There have been some discussions =
about who should own the Cougar FTI<BR>&gt; port/development.&nbsp; =
Since this was implemented in R98, after the<BR>&gt; Cougar porting was =
started, it wasn't really clear whether the<BR>&gt; offshore team or =
Cougar team should own this.&nbsp; After some<BR>&gt; discussions, it =
was decided that the offshore team would be the right<BR>&gt; team to =
implement this given your familiarity with the R98 =
work.&nbsp;<BR>&gt;<BR>&gt; Currently the Cougar FTI is based on the =
"old" pre-R98 FTI so the<BR>&gt; porting/development of Cougar =
(R98-based) FTI is not gating any<BR>&gt; developers.&nbsp; Also this is =
not a requirement for the upcoming Cougar<BR>&gt; beta in =
February.&nbsp;<BR>&gt;<BR>&gt; We'll need a schedule for the =
work.&nbsp; Tim requested this by Monday if<BR>&gt; possible, however =
let me know if that's feasible, or an alternative<BR>&gt; date for a =
schedule.&nbsp; Andy Sharp is the primary Linux technical<BR>&gt; =
contact, and feel free to consult with Charissa (or I) as needed =
also.<BR>&gt;<BR>&gt; Thanks.<BR>&gt; =
Brian<BR>&gt;<BR></FONT></P></DIV></BODY></HTML>
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