[17249] in Athena Bugs
attach
daemon@ATHENA.MIT.EDU (John Carr)
Sat Oct 9 18:01:55 1999
Message-Id: <199910092201.SAA00065@nerd-xing.mit.edu>
To: bugs@MIT.EDU
Date: Sat, 09 Oct 1999 18:01:48 -0400
From: John Carr <jfc@MIT.EDU>
On an 8.3 dialup I ran:
% attach -o rsize=16384,wsize=16384,tcp bitbucket
attach: JASON.MIT.EDU:/u1/bitbucket attached to /mit/bitbucket for filesystem bitbucket
% mount|grep bitbucket
/mit/bitbucket on JASON.MIT.EDU:/u1/bitbucket rsize=1024/wsize=1024/soft/read/write/nosuid/remote on Mon Sep 27 09:19:23 1999
There are two problems.
1. attach should try TCP with a large transfer size before going to UDP
with a small transfer size. This should improve performance while still
being friendly to the backbone and gateways. Solaris, IRIX, and the
latest versions of Linux support TCP.
2. If I ask for mount options and attach can't use them because the
filesystem is already attached with different options, it should warn
me. For example,
warning: bitbucket mount options ignored, filesystem is already mounted
