[9281] in Athena Bugs
fs flushvol: The WRONG thing
daemon@ATHENA.MIT.EDU (Jeffrey I. Schiller)
Wed May 6 12:02:13 1992
Date: Wed, 6 May 92 12:01:25 -0400
From: Jeffrey I. Schiller <jis@MIT.EDU>
To: akajerry@MIT.EDU
Cc: bugs@MIT.EDU, bug-afs@MIT.EDU, trb@MIT.EDU, athena-ws@MIT.EDU
So how about implementing the wrong thing for now. That is, a user
command that flushes the whole cache that a user can execute at
his/her discretion upon logout. This would basically put us back to
the same place we were with NFS security; the system is insecure by
default, but there is a user command that can make the system more
secure, albeit with a severe preformance hit for the next user.
This scares me. This command will also flush the cache of system pack
files. Our whole strategy for delivery system packs via AFS strongly
depends on the fact that the AFS cache survives for a long time and is
not flushed between users. If we create this command I am concerned
that the consultants (and others) will get it into their list of
"standard" advice about how one should operate on a daily basis. The
net result I am afraid will be lots of people flushing the caches many
times.
How about we recommend that people use the "fs flush" command to flush
out files that they feel are particularly sensitive?
-Jeff
