Large Write_Andx messages

Jeremy Allison jra at
Mon Oct 29 19:35:12 GMT 2007

On Mon, Oct 29, 2007 at 08:18:25PM +0100, Mikael Klamra wrote:
> 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.

As I said, the Samba client doesn't use the ANDX facility of
CIFS, as the Windows server doesnt' seem to support it (as
you've noticed).


More information about the samba-technical mailing list