Coda File System

Re: Unreachable Coda server

From: Jan Harkes <>
Date: Wed, 10 Jul 2002 14:08:57 -0400
On Wed, Jul 10, 2002 at 10:50:34AM -0700, Tewari, Vijay wrote:
> My venus client quite occasionally reports an unreachable server. However I
> can ping the coda server with an average roundtrip of around
> 3 ms. Codacon reports unreachable server. Just before it reported this here
> is what it reported as the connection BW
> Connection: bandwidth codasrv_vijay 46072 67879 128882
> I need to cfs cs to tell Venus that the server is up and it works fine for w
> while and then falls back into the server disconnected mode.
Your masquerading firewall is dropping the redirection when there is no
traffic (probably about every 3 minutes). If the Coda server then tries
to break a callback or do a keepalive probe for the client the packets
don't get forwarded and the server marks the client as dead and drops
any established callback promises.

Then when the client tries to perform any operation, the server sends
back an error that forces the client to disconnect, reconnect and
revalidate it's cache state (i.e. re-establish callbacks).

Set serverprobe=150 in the client's /etc/coda/venus.conf might fix this.

Received on 2002-07-10 14:10:14