The file is not there because the driver is not yet loaded.  You have to
load the driver first before you can change the buffersize. All the
appropriate /proc stuff gets created after the driver loads.

Jay Brenneman





                      "Scully, William"
                      <WILLIAM.SCULLY@c        To:       [EMAIL PROTECTED]
                      a.com>                   cc:
                      Sent by: Linux on        Subject:  Buffersize on Linux CTC Driver
                      390 Port
                      <[EMAIL PROTECTED]
                      IST.EDU>


                      02/14/02 02:26 PM
                      Please respond to
                      Linux on 390 Port





The IBM "Linux for S/390 Device Drivers and Installation Commands"
document, dated 18 July 2001, in Chapter Seven, "Linux for S/390 CTC/ESCON
Device Driver", has Usage Note 2 under "Preparing the Connection" which
reads:

   Definitions on the remote side

   Set up the TCP/IP on the remote side, as described in the reference
manuals.
   This will vary depending on which operating system is used on the remote
side.

   Note: It is important that you have IOBUFFERSIZE 32678 defined because
the
   LINUX for S/390 CTC driver works with 32k internally. This is
configurable
   for each device by writing the value to the buffersize file for that
device
   (proc/net/ctc/<devicename>/buffersize ), for example

     echo 32768 >/proc/net/ctc/ctc0/buffersize

I'm not sure how this is accomplished.  Logging on as root and issuing the
command doesn't work.  Here's what I get:

  LINUXWPS:/proc # echo 32768 >/proc/net/ctc/ctc0/buffersize
  bash: /proc/net/ctc/ctc0/buffersize: No such file or directory

What is the correct technique for creating the appropriate directories and
file?

William P. Scully
Systems Programmer
Computer Associates International, Inc
[EMAIL PROTECTED]

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