Accessing a Symbolics LMFS from a UN*X machine via NFS

[cjl@ai.mit.edu (Chris Lindblad)]

    Date: Fri, 13 Jul 90 23:20 EDT
    From: barmar@think.com (Barry Margolin)

	Date: Fri, 13 Jul 90 16:10 CDT
	From: lgm@iexist.att.com

	Our system administrator is trying to set up NFS (Genera 8.0) and can't
	find any explicit documentation on how to mount a Symbolics file system
	on a Sun so that it is accessible to UN*X users.  The Sun reportedly
	needs not only a host name but a "file system name."  None of "", ">",
	and "/" seem to work.  Has anyone done this successfully?  Are there any
	other gotchas in making this work?

    Hmm, the 8.0 NFS manual is completely missing the information on using
    the Symbolics as an NFS server.  It was in the 7.2 version of the
    documentation that we got from ILA.

    This is the /etc/fstab line that they recommended:

    aquinas:> /lispm/aquinas  nfs noauto,rsize=1136,wsize=1136,noquota,nosuid,retrans=5,retry=5,timeo=15,intr 0 0

    Replace "/lispm/aquinas" with the mount point you wish to use.  Note the
    "noauto" option, which makes "mount -a" skip this entry, requiring that
    the file system be mounted explicitly with "mount /lispm/aquinas";
    mounting a Symbolics NFS server generally takes a long time, and we
    didn't want it holding up the Sun boot, so we put the "noauto" here and
    put "mount /lispm/aquinas &" in /etc/rc.local.

    If you're using the automounter, and you mount /net with the special
    "-hosts" map, you should be able to access the Lispm as /net/lispm-name.
    If you want to put it in your auto.master map, the following entry would
    be equivalent to the above fstab entry:

    /lispm/aquinas -rsize=1136,wsize=1136,noquota,nosuid,retrans=5,timeo=15,intr aquinas:>

This is all still valid, except the recommendation of -rsize=1136,wsize=1136
is a consequence of the IP packet size restriction of 7.2 discussed on this
list earlier.  If your machine can handle big packets without dropping them
(see last weeks discussion on SLUG), then I highly recommend setting rsize and
wsize as large as you can, (up to 8192).  This is because the overhead to
process an NFS request on the Symbolics NFS server is quite high so you would
like to transfer as much data you can in each request.