[OpenAFS-port-darwin] mount_afs warning

[Jonathan Z. Simon]

Just wanted to give a warning to anyone using Alexei's afsd -nomount 
option, and then using mount_afs to mount all of AFS.

If you modify /Library/StartupItems/OpenAFS/OpenAFS to use the -nomount 
option (e.g. add -nomount to the $AFSD $OPTIONS line) for your laptop, 
and then you later execute 'sudo mount_afs "" /Network/afs' to mount 
all of afs where OpenAFS usually mounts it, you'll have a problem:

When afs is unmounted (e.g. when the system is rebooted), /Network/afs 
will be removed. Then next time you reboot, OpenAFS will not start due 
to the lack of /Network/afs. If you then, naively, use mount_afs, you 
will get a kernel panic. :(

So I would recommend adding the line 'if [ ! -d /Network/afs ]; then 
mkdir /Network/afs; fi' near the top of 
/Library/StartupItems/OpenAFS/OpenAFS if you will ever use the -nomount 
option.

Jonathan

> % mkdir /Volumes/akosut # make sure the directory exists
> % mount_afs user.akosut /Volumes/akosut
>
> If you want to mount all of AFS (as would normally be mounted by afsd 
> on /afs), you can pass the empty string ("") as the volume name.
>
> -- 
> Alexei Kosut <akosut@cs.stanford.edu> <http://cs.stanford.edu/~akosut/>
--
Jonathan Z. Simon
Dept. of Electrical & Computer Engineering / Dept. of Biology
University of Maryland, College Park MD 20742 USA
Office: 1-301-405-3645, Lab: 1-301-405-6581, Fax: 1-301-314-9281
http://www.isr.umd.edu/Labs/CSSL/
--There are 10 types of people in this world: those who understand 
binary and those who don't.