Lustre discuss - Nov 2009 - Determine addresses of connected clients/servers

Is there a command to pull the addresses of every device connected to a cluster?

I have found:
lct -net tcp [peer_list | conn_list]

But neither of those show all of the clients as well as servers in a cluster. 
Is there a command or something in a proc table on the MDS, OSS or client
machines that will give information about all points connected?

Thanks!
--
Andrew Lundgren
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On Mon, Nov 16, 2009 at 02:51:01PM -0700, Lundgren, Andrew
wrote:
>    Is there a command to pull the addresses of every device connected to a
>    cluster?
> 
>    I have found:
> 
>    lct -net tcp [peer_list | conn_list]
This would only show immediate peers, i.e. next-hop peers. In a routed
configuration, it only gives you active router NIDs on clients and
servers.
>    But neither of those show all of the clients as well as servers in a
>    cluster.  Is there a command or something in a proc table on the MDS,
>    OSS or client machines that will give information about all points
>    connected?
At least on OSS, there''s per-client stat somewhere under /proc -
I forgot the exact path, but should not be too hard to find(1) - e.g.
find /proc | grep a_client_nid.

Isaac

Hi there!

On Mon, 16 Nov 2009 14:51:01 -0700
"Lundgren, Andrew" <Andrew.Lundgren at Level3.com> wrote:
> Is there a command or something in a proc table on the MDS, OSS or
> client machines that will give information about all points
> connected?
Would a "lshowmount -lev" running on the MDS help?

wolfgang

-- 
Wolfgang Stief
Dipl.-Ing. (FH)
Senior Systems Engineer Unix, Storage, Archiving
wolfgang.stief at best.de

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On 2009-11-16, at 13:51, Lundgren, Andrew wrote:
> Is there a command to pull the addresses of every device connected  
> to a cluster?
>
> I have found:
> lct ?net tcp [peer_list | conn_list]
This just shows the network connections, and if you have Lustre routers
it will only show the routers, AFAIR.

You can see this in /proc/fs/lustre/{obdfilter,mds}/{target}/exports
to list the nids, or other per-client statistics.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.