From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Sat, 21 Oct 1995 06:01:58 -0400
From: dhog@plan9.cs.su.oz.au dhog@plan9.cs.su.oz.au
Subject: nextstation stuff
Topicbox-Message-UUID: 2f8f1f4c-eac8-11e9-9e20-41e7f4b1d025
Message-ID: <19951021100158.Slg_kBRKEWzeYA--CxKTg2xeoQ3hMoATVj05VwufxuA@z>

>Before I decided to wipe the scsi drive for swapping, I tried =
>swapping to a file over u9fs.  This caused system traps during =
>linking.  I can certainly see how it would fail (part of the u9fs =
>client gets swapped out), but the docs say "swap to raw devices or =
>remote servers".  Is that supposed to work?

In theory it should work fine.  The "u9fs client" is the mount driver, which
lives in the kernel and can't be swapped out.  Most of tcp/ip is in the kernel
also.  The thing to watch out for is that arpd is a user process, and thus it
can be swapped out.  This can be a problem if your server likes to time out
arp table entries too frequently.  I noticed that Solaris flushes its arp table
unconditionally (except for permanent entries) every few seconds (though
I think this is reconfigurable).

>Does cfs work with u9fs?  It wouldn't automatically start up, and =
>when I started it manually, it failed as soon as I went into the =
>cached directory.

The last I looked, u9fs didn't implement the "clwalk" operation (only
used by cfs), so unless this has been fixed, it won't work.