This problem is specific to AIX systems running as translator machines
under AFS 3.2a.  A fix is currently available.  Contact your AFS
Product Support Representative if you'll be needing this fix.

Kathy Rizzuti
AFS Product Support

---------- Forwarded message begins here ----------

From: [EMAIL PROTECTED]
Subject: 3.2a, AFS-NFS Translation (afs.ext.trans)
To: [EMAIL PROTECTED]
Date: Wed, 7 Apr 1993 17:53:15 +22311841 (EDT)

For the rs_aix32 system, there appears to be a problem with
root.client/usr/vice/etc/dkload/afs.ext.trans in the 3.2a release.
(the kernel extension for AFS-NFS translator machines.)

The problem is _silent_. The 3.2 afs.ext.trans appears to work correctly
with the rest of the 3.2a release.

-rwxr-x---   1 root     system    371251 Aug 25 1992  afs.ext.trans
-rwxr-xr-x 1 lawrence system 386759 Mar 05 12:31 afs.ext.trans.broken3.2a
sum afs.ext.trans*
26445   363 afs.ext.trans
21227   378 afs.ext.trans.broken3.2a
The problem we've had is with a Convex C210 at ConvexOS V9.1 as the NFS
machine. It shows up with various file writing situations; for instance when
moving user files into AFS with "tar" or "cp". Some files get truncated or
otherwise munged, without an error message resulting from the writing
operation. In one situation, an inital opening & writing operation worked,
but subsequent appends to the file failed, again without error. Thus, people
were quietly losing data. This is fairly repeatable.

I do not know if the problem is specific to Convexen; I rather suspect that
it's specific to rs_aix32 translators at 3.2a. But the Convex is the only
non-supported machine we run much via translation.

I've reported the bug, but I feel the neccesity of sending a note to
info-afs since we've had this for a week before we traced it back to the
AFS-NFS translation; it can cause lost data (we had users losing mail, which
maketh them very restless) and the old binary does fix it easily. What made it
tricky is the partial function and lack of (reported) errors.
--
-Lawrence Smith, MSC Computing Staff - Cornell Univ., Ithaca, NY
 [EMAIL PROTECTED] [EMAIL PROTECTED] (607)255-6064
-Cats, Coffee, Chocolate... Vices to live by.




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