Re: root over nfs, error -93

[Chuck Lever <chuck.lever@oracle.com>]

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Julius wrote:
> Hi,
> 
> 
> im trying to get a client boot from my server via nfs. but it fails
> with:
> 
> Root-NFS: Server returned error -93 while
> mounting /nfs-exports/pxeclient

Error 93 is EPROTONOSUPPORT.  Is there a firewall between client and 
server?  tcpwrappers on either end?  Are you using a motherboard NIC 
that silently hijacks a reserved UDP port?

Try capturing a network trace with "tcpdump -s0 -w /tmp/dump" on your 
server while your client boots.  Take a look at it with wireshark or 
tethereal.

> the client uses a vanilla 2.6.24.7 kernel with these settings:
> <*>   NFS file system support 
>  [*]     Provide NFSv3 client support 
>  [*]       Provide client support for the NFSv3 ACL protocol extension 
>  [*]   Root file system on NFS
>  [*]   Support for rpcbind versions 3 & 4 (EXPERIMENTAL)
> 
> 
> full config:
> http://metalfan2.me.funpic.de/.config
> 
> 
> kernel append line:
> append root=/dev/nfs nfsroot=192.168.11.3:/nfs-exports/pxeclient ip=dhcp
> 
> 
> the system successfully boots the kernel via syslinux and requests its
> ip via dhcp
> 
> 
> server:
> rpcinfo -p localhost
>    program vers proto   port
>     100000    2   tcp    111  portmapper
>     100000    2   udp    111  portmapper
>     100024    1   udp  54039  status
>     100024    1   tcp  57693  status
>     100005    3   udp  48497  mountd
>     100005    3   tcp  34406  mountd
>     100003    2   udp   2049  nfs
>     100003    3   udp   2049  nfs
>     100003    4   udp   2049  nfs
>     100021    1   udp  47061  nlockmgr
>     100021    3   udp  47061  nlockmgr
>     100021    4   udp  47061  nlockmgr
>     100003    2   tcp   2049  nfs
>     100003    3   tcp   2049  nfs
>     100003    4   tcp   2049  nfs
>     100021    1   tcp  54896  nlockmgr
>     100021    3   tcp  54896  nlockmgr
>     100021    4   tcp  54896  nlockmgr
> 
> nfs-utils-1.1.0
> 
> 
> 
> Any ideas whats wrong?
> 
> 
> 
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