[OpenAFS] windows network path not found

[Jeffrey Altman]

This is a cryptographically signed message in MIME format.

--------------ms050400040100090800070707
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

Dave Botsch wrote:
> So, in concert with the Symantec Client Firewall, we've seen some systems give
> the "network path not found" when accessing ThisCell. Usually, this goes away
> after a while as specified in:
> 
> http://www.openafs.org/pipermail/openafs-info/2007-January/024992.html
> 
> 	Note that "network path not found" does not mean that communication with
> 	the file servers doesn't work.  It more often means that Windows is
> 	timing out the connection to the AFS SMB server, tearing it down, and
> 	waiting for a while, and reconnecting.  In that period of "waiting for
> 	a while" you get "network path not found" errors and "NET USE" will
> 	report paths to \\AFS as disconnected.
> 
> I can't yet reproduce this on command to be able to capture debugging
> information, but am willing to spend some more time on this if it's not
> yet known what is going on (I see mention in the above email of a bug
> report... did that ever happen?). In the meantime, I wanted to ask:
> 
> any known issues as to why this would happen and why it only seems to happen
> with ThisCell? We've seen it be more prominent it seems when the ThisCell is
> using freelance.
> 
> Any known way to kick Windows to stop "waiting a while" and try again now?
> 
> Thanks!

OAFW has special logic in it to allow it to configure the Windows XP
Firewall to open the 7001/UDP port and allow AFS servers to send
callbacks to the OpenAFS cache manager.   There is no such automatic
configuration for the Symantec Firewall.  Have you configured it to open
 the port used for communicating with the cache manager?

"Network path not found" is the error that is returned when:

 * The CIFS client has dropped the connection to the AFS client service
   and it has not yet reached the end of its retry back-off algorithm

 * The AFS Cache Manager is unable to talk with the file server to
   obtain current status information for the specified path

   + file server is down, volume is busy, etc.

   + network outage

   + file server refuses to talk to the client because it thinks the
     client is at an addr/port that it is no longer at (bug in 1.4.1)

 * The path really doesn't exist in AFS

What do you mean by "ThisCell" in this context?

You can't kick Windows.  If the problem is the AFS client thinks the AFS
file servers are down, you can "fs checkservers -cell cellname".  If the
AFS file servers won't talk to the client and you are running 1.4.1 you
can upgrade your servers to 1.4.2 or wait for the file servers to timeout.

However, you have not provided sufficient data to be able to identify
which of these possibilities this instance of the error message is.
More debugging is required.

Jeffrey Altman
Secure Endpoints Inc.

--------------ms050400040100090800070707
Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"
Content-Description: S/MIME Cryptographic Signature
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--------------ms050400040100090800070707--