nfsroot problems on RedHat 8 with kernel linux-2.4.18-27.8.0

nfsroot problems on RedHat 8 with kernel linux-2.4.18-27.8.0

[Martynas Buozis]

Hello


I have problems with nfsroot module when root file system is shared on 
EMC Cellerra. The problem is, that  Celerra needs the
client's name and IP address to authenticate the mount request. This
information is usually sent through the RPC authentication data. But 
nfsroot module does not send this data during mount, so Celerra denies 
request. This was a conclusion by EMC support after analyzing network's 
traffic between disk less station and Celerra.

I was looking what can be changed in /usr/src/linux-2.4/fs/nfs/nfsroot.c 
code, but I am not very experienced in this. Maybe somebody can help me 
to solve this problem ? Maybe that's wrong file were too look for 
changes ? Is it possible to make changes like this and is it possible to 
get official fix fro this problem ?

Thank you very much for your kind responses.

With best regards
Martynas Buozis



-------------------------------------------------------
This SF.net email is sponsored by: ObjectStore.
If flattening out C++ or Java code to make your application fit in a
relational database is painful, don't do it! Check out ObjectStore.
Now part of Progress Software. http://www.objectstore.net/sourceforge
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs

Re: nfsroot problems on RedHat 8 with kernel linux-2.4.18-27.8.0

[Trond Myklebust]

>>>>> " " == Martynas Buozis <martynas@ti.com> writes:

     > Hello I have problems with nfsroot module when root file system
     > is shared on EMC Cellerra. The problem is, that Celerra needs
     > the

     > client's name and IP address to authenticate the mount
     > request. This information is usually sent through the RPC
     > authentication data. But nfsroot module does not send this data
     > during mount, so Celerra denies request. This was a conclusion
     > by EMC support after analyzing network's traffic between disk
     > less station and Celerra.


     > I was looking what can be changed in
     > /usr/src/linux-2.4/fs/nfs/nfsroot.c code, but I am not very
     > experienced in this. Maybe somebody can help me to solve this
     > problem ? Maybe that's wrong file were too look for changes ? 
     > Is it possible to make changes like this and is it possible to
     > get official fix fro this problem ?

Look at Documentation/nfsroot.txt and/or the comments in
net/ipv4/ipconfig.c. That will tell you how to specify the hostname.

Cheers,
  Trond


-------------------------------------------------------
This SF.net email is sponsored by: ObjectStore.
If flattening out C++ or Java code to make your application fit in a
relational database is painful, don't do it! Check out ObjectStore.
Now part of Progress Software. http://www.objectstore.net/sourceforge
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs

Re: nfsroot problems on RedHat 8 with kernel linux-2.4.18-27.8.0

[Martynas Buozis]

Hello

Thank you for response. Alias this is not a case.

Disk less client gets host name via bootp. And I specify to use autoconf 
to get it via bootp in kernel parameters like it is written in 
nfsroot.txt. I also see, that it is configured with right IP and right 
host name. These line comes before NFS mount is tried :

IP-Config: Complete:
       device=eth0, addr=<correct address>, mask=255.255.255.0, 
gw=<correct address>,
      host=testmws, domain=, nis-domain=(none),
      bootserver=<correct address>, rootserver=<correct address>, rootpath=

All entries in this configuration information are correct. The problem 
is, that nfsroot module itself sends mount request without information 
that is required by Celerra.

When system is booted up (same IP and host name but using another boot 
tree with identical file shared on SUN/Solaris) I can mount there file 
systems shared on Celerra (simple "mount cellera:/share /mnt" command) 
In this case usual mount command sends all information Celerra expects 
to get. So I think that problem is really in nfsroot module itself. 
Maybe it is too old, because it does not support all options available 
for usual command line  mount command as specified in "man nfs" ?


With best regards
Martynas Buozis




Trond Myklebust wrote:
>>>>>>" " == Martynas Buozis <martynas@ti.com> writes:
>>>>>
> 
>      > Hello I have problems with nfsroot module when root file system
>      > is shared on EMC Cellerra. The problem is, that Celerra needs
>      > the
> 
>      > client's name and IP address to authenticate the mount
>      > request. This information is usually sent through the RPC
>      > authentication data. But nfsroot module does not send this data
>      > during mount, so Celerra denies request. This was a conclusion
>      > by EMC support after analyzing network's traffic between disk
>      > less station and Celerra.
> 
> 
>      > I was looking what can be changed in
>      > /usr/src/linux-2.4/fs/nfs/nfsroot.c code, but I am not very
>      > experienced in this. Maybe somebody can help me to solve this
>      > problem ? Maybe that's wrong file were too look for changes ? 
>      > Is it possible to make changes like this and is it possible to
>      > get official fix fro this problem ?
> 
> Look at Documentation/nfsroot.txt and/or the comments in
> net/ipv4/ipconfig.c. That will tell you how to specify the hostname.
> 
> Cheers,
>   Trond




-------------------------------------------------------
This SF.net email is sponsored by: ObjectStore.
If flattening out C++ or Java code to make your application fit in a
relational database is painful, don't do it! Check out ObjectStore.
Now part of Progress Software. http://www.objectstore.net/sourceforge
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs

Re: nfsroot problems on RedHat 8 with kernel linux-2.4.18-27.8.0

[Trond Myklebust]

>>>>> " " == Martynas Buozis <martynas@ti.com> writes:

     > When system is booted up (same IP and host name but using
     > another boot tree with identical file shared on SUN/Solaris) I
     > can mount there file systems shared on Celerra (simple "mount
     > cellera:/share /mnt" command) In this case usual mount command
     > sends all information Celerra expects to get. So I think that
     > problem is really in nfsroot module itself. Maybe it is too
     > old, because it does not support all options available for
     > usual command line mount command as specified in "man nfs" ?

NFS uses the hostname as specified in /proc/sys/kernel/hostname (alias
system_utsname.nodename) whether or not it is running from NFSroot.

If you have set the hostname in bootp, then ipconfig will set it, and
will print it out as 'host=%s" in the "IP-Config: Complete"
information...

Cheers,
  Trond


-------------------------------------------------------
This SF.net email is sponsored by: ObjectStore.
If flattening out C++ or Java code to make your application fit in a
relational database is painful, don't do it! Check out ObjectStore.
Now part of Progress Software. http://www.objectstore.net/sourceforge
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs

Re: nfsroot problems on RedHat 8 with kernel linux-2.4.18-27.8.0

[Martynas Buozis]

Hi

> NFS uses the hostname as specified in /proc/sys/kernel/hostname (alias
> system_utsname.nodename) whether or not it is running from NFSroot.
>
> If you have set the hostname in bootp, then ipconfig will set it, and
> will print it out as 'host=%s" in the "IP-Config: Complete"
> information...

As I wrote in my previous letter - ipconfig sets host name and prints it out
as "host=testmws" (testmws is host name) in "IP-Config: Complete". But
rootnfs module is not sending full informtion as required by Celerra, so
mount request is denied. When I use mount from command line on booted RedHat
8 system to mount same file system - it sends all required information and
Celerra accepts mount request.


With best regards
Martynas Buozis




-------------------------------------------------------
This SF.net email is sponsored by: ObjectStore.
If flattening out C++ or Java code to make your application fit in a
relational database is painful, don't do it! Check out ObjectStore.
Now part of Progress Software. http://www.objectstore.net/sourceforge
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs

Re: nfsroot problems on RedHat 8 with kernel linux-2.4.18-27.8.0

[Trond Myklebust]

>>>>> " " == Martynas Buozis <martynas@ti.com> writes:

     > informtion as required by Celerra, so mount request is
     > denied. When I use mount from command line on booted RedHat 8
     > system to mount same file system - it sends all required
     > information and Celerra accepts mount request.

OK. I misunderstood you (sorry). You were talking about the mount
protocol, and I was thinking about the NFS protocol itself.

The following patch ought to suffice...

Cheers,
  Trond

--- linux-2.4.21-up/fs/nfs/mount_clnt.c.orig	2002-10-15 18:32:18.000000000 +0200
+++ linux-2.4.21-up/fs/nfs/mount_clnt.c	2003-05-25 23:50:12.000000000 +0200
@@ -75,7 +75,7 @@
 
 	clnt = rpc_create_client(xprt, hostname,
 				&mnt_program, version,
-				RPC_AUTH_NULL);
+				RPC_AUTH_UNIX);
 	if (!clnt) {
 		xprt_destroy(xprt);
 	} else {




-------------------------------------------------------
This SF.net email is sponsored by: ObjectStore.
If flattening out C++ or Java code to make your application fit in a
relational database is painful, don't do it! Check out ObjectStore.
Now part of Progress Software. http://www.objectstore.net/sourceforge
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs

Re: nfsroot problems on RedHat 8 with kernel linux-2.4.18-27.8.0

[Martynas Buozis]

Trond


Great ! Wonderful ! It is working now ! Thank you very much for your 
kind help.

Linux specialist from EMC support is still investigating this question ...


With best regards
Martynas


Trond Myklebust wrote:
>>>>>>" " == Martynas Buozis <martynas@ti.com> writes:
>>>>>
> 
>      > informtion as required by Celerra, so mount request is
>      > denied. When I use mount from command line on booted RedHat 8
>      > system to mount same file system - it sends all required
>      > information and Celerra accepts mount request.
> 
> OK. I misunderstood you (sorry). You were talking about the mount
> protocol, and I was thinking about the NFS protocol itself.
> 
> The following patch ought to suffice...
> 
> Cheers,
>   Trond
> 
> --- linux-2.4.21-up/fs/nfs/mount_clnt.c.orig	2002-10-15 18:32:18.000000000 +0200
> +++ linux-2.4.21-up/fs/nfs/mount_clnt.c	2003-05-25 23:50:12.000000000 +0200
> @@ -75,7 +75,7 @@
>  
>  	clnt = rpc_create_client(xprt, hostname,
>  				&mnt_program, version,
> -				RPC_AUTH_NULL);
> +				RPC_AUTH_UNIX);
>  	if (!clnt) {
>  		xprt_destroy(xprt);
>  	} else {
> 



-- 

With best regards
Martynas Buozis
UNIX Systems Administrator
FFAB Computer Engineering



-------------------------------------------------------------
Martynas Buozis            Texas Instruments Deutschland GmbH
Mail:  martynas@ti.com     Haggertystrasse 1
Phone: +49 8161 80 4506    85356 Freising
Fax:   +49 8161 80 3191    Germany



-------------------------------------------------------
This SF.net email is sponsored by: ObjectStore.
If flattening out C++ or Java code to make your application fit in a
relational database is painful, don't do it! Check out ObjectStore.
Now part of Progress Software. http://www.objectstore.net/sourceforge
_______________________________________________
NFS maillist  -  NFS@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nfs