[OpenAFS] Re: Windows TGS_REQ on alternate Netbios Names

Sun, 30 Nov 2003 15:59:24 -0500

This is a cryptographically signed message in MIME format.

--------------ms020909010608090503000008
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Rodney M Dyer wrote:

> At 05:37 PM 11/29/2003, Jeffrey Altman wrote:
>
>> The loopback adapter hack will be removed when the underlying 
>> problems it works around have been fixed.
>
>
> Gee thanks, I guess I didn't think of that (sarcasm).  ;P
>
> What I really mean is what time frame is involved here?  I mean it 
> isn't like there's going to be an installable filesystem AFS client 
> soon right?  So we are stuck with SMB.  So how are we going to work 
> out AFS issues with SMB when most of the issues are caused by the SMB 
> interface in the first place?  It is my experience that pulling the 
> net cable out on AFS causes it to crash.  This is an SMB interface 
> problem, not an AFS problem right?  So the fake SMB server code in the 
> AFS client for Windows wasn't written well enough to handle a pulled 
> cable?  Is that the code that needs fixing?
>
> Sorry so many questions.  I like to be clear on future development.  I 
> like to know about things before I'm impacted by them.  The OpenAFS 
> 'Projects' and 'Roadmap" leave much to be desired.

There are four possible directions which can be taken (in increasing 
order of preference and time to implement):

   1. Develop our own loopback adapter implementation which works
      correctly on NT4 and Win2000 which we would mandate the use of
   2. re-write the existing NetBIOS/SMB code to use dynamic binding to
      lan adapters as the IP address assignments on the machine change
   3. replace the existing NetBIOS/SMB code with a new implementation
      which talks directly to the SMB service and thereby removes the
      need for broadcast packets to be loopbacked for registration
   4. replace the existing afsd_service with a Network Redirector not
      based on SMB at all

I am spending my free time attempting to clean up the build process and 
remove obvious bugs in the existing code which does not require a redesign.

 From that base the additional work can be done which must include:

    * support for Kerberos 5 authentication via either KfW or the
      Microsoft LSA
    * better integrated login support
    * better isolation of user tokens for use on multi-user machines
      (terminal server)
    * improved handling of persistent drive mappings
    * Unicode filename support (I don't think this works correctly at
      present)

and I'm sure I am leaving things out. 

All of this takes time to implement.  Hopefully, someone is willing to 
devote the time or money to see the work done.

> So while I'm here...
>
> We are currently at 1.2.9a and plan on a Jan release of 1.2.10 if 
> possible.  I've observed a bad problem with 1.2.9a that I'd like to 
> share.  Copying large files >250 Meg to or from AFS causes a severe 
> slowdown of our XP machines.  The slowness remains even after the 
> files are finished copying.  The only thing that will cure the problem 
> is a shutdown and restart of the AFS service.  Our cache is set to 256 
> Meg so this is very coincidental.  I've tried varying threads, 
> services, and chunk sizes but nothing helps.

The cache file is memory mapped.  So this is likely causing 256MB of 
memory to be allocated and paged.  How much physical and paging memory 
do your systems have?

When examining the afsd_service.exe process in the Task Manager, what 
are the values of the "Mem Usage" and "Handles" columns? 

Jeffrey Altman

--------------ms020909010608090503000008
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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--------------ms020909010608090503000008--