Large Write_Andx messages

[Christopher R. Hertel]

Ah.

Thanks for clarifying.  Jeremy understood it right...

I have never seen WRITE_ANDX chains.  Samba is probably able to handle them
but you would have to test.

Note that CAP_LARGE_WRITEX does not refer to ANDX chains, but rather to
large writes that exceed the negotiated block size.

Chris -)-----

Mikael Klamra wrote:
> Hi,
> I was asking about chained WRITE_ANDX messages. Windows supports large
> WRITE_ANDX messages when the messages contain only one block. However,
> I want to chain several blocks in a message (i.e., use the batching
> functionality of WRITE_ANDX). Windows Server 2003 seems to accept
> WRITE_ANDX messages containing two blocks when the total message size
> is up to about 4700 bytes. When the size gets larger, the server
> returns a non-specific error code. This usually means that the message
> has the wrong format or that a capability was not set. Does Samba use
> the batching functionality of WRITE_ANDX? The Windows client does not
> seem to use it.
> 
> Mikael
> 
> 
> On 10/29/07, Christopher R. Hertel <crh at ubiqx.mn.org> wrote:
>> Jeremy Allison wrote:
>>> On Mon, Oct 29, 2007 at 11:20:43AM -0700, James Peach wrote:
>>>> The Mac OS X 10.5 client will do large reads and writes to Samba. The
>>>> Samba support for this works perfectly well.
>>> He wasn't asking about large read/writes, he was asking about
>>> chaining (andX) support.
>> Actually, he's asking about both to some extent.
>>
>> He pinged me first in reference to my book and then also the jCIFS list.
>> These are interesting questions, of course, but I think the original post
>> slid a bit between CAP_LARGE_WRITEX and the idea of chaining WRITE_ANDX
>> messages, thus the confusion.
>>
>> Chris -)-----
>>
>> --
>> "Implementing CIFS - the Common Internet FileSystem"    ISBN: 013047116X
>> Samba Team -- http://www.samba.org/    -)-----     Christopher R. Hertel
>> jCIFS Team -- http://jcifs.samba.org/  -)-----  ubiqx development, uninq
>> ubiqx Team -- http://www.ubiqx.org/    -)-----          crh at ubiqx.mn.org
>> OnLineBook -- http://ubiqx.org/cifs/   -)-----             crh at ubiqx.org
>>

-- 
"Implementing CIFS - the Common Internet FileSystem"    ISBN: 013047116X
Samba Team -- http://www.samba.org/    -)-----     Christopher R. Hertel
jCIFS Team -- http://jcifs.samba.org/  -)-----  ubiqx development, uninq
ubiqx Team -- http://www.ubiqx.org/    -)-----          crh at ubiqx.mn.org
OnLineBook -- http://ubiqx.org/cifs/   -)-----             crh at ubiqx.org