It seems like every time I create a file then delete it, mount_mfs doesn't
reclaim the space.

I could continue to create 1000 byte files and delete, but the space was
used more and more.

You can see below that I am only using 1445 KB but mfs thinks it has
4821KB.

# ps auw -p 2023
USER  PID %CPU %MEM  VSZ  RSS TT STAT STARTED    TIME COMMAND
root 2023  0.0  5.4 5580 5096 ?? Ss    9:17AM 0:00.83 mount_mfs -s 5m swap /var/tmp

# du -sk /var/tmp/
1445    /var/tmp/

# df | grep /var/tmp
mfs:2023               4927     4821     -141   103%    /var/tmp
/var/tmp/etc           4927     4821     -141   103%    /etc
/var/tmp/tmp           4927     4821     -141   103%    /tmp
/var/tmp/var/log       4927     4821     -141   103%    /var/log
/var/tmp/var/run       4927     4821     -141   103%    /var/run
/var/tmp/var/db        4927     4821     -141   103%    /var/db
/var/tmp/var/cron      4927     4821     -141   103%    /var/cron
/var/tmp/etc           4927     4821     -141   103%    /etc
/var/tmp/home          4927     4821     -141   103%    /home
/var/tmp/root          4927     4821     -141   103%    /root

This was setup like:

swap            /var/tmp        mfs     rw,-s=5m       0 0

and:

 mount -t null /var/tmp/root root

I had added a bunch of packages, like ogg vorbis, but the kernel said I
was out of space when I tried to copy a big ogg file. Then I deleted all
my installed packages, but the used space stayed the same.

Any ideas on how to troubleshoot this?

Is there a more appropriate mailing list?

Has anyone noticed problems or had success with mount_null on mount_mfs?

Also, I notice that "systat vmstat" shows cd0 going up but md0 is always 0
when I access /var/tmp. Is mfs related to md0? (I was hoping that the cd0
wouldn't be accessed when I use /var/tmp.)

Thanks,

   Jeremy C. Reed

p.s. My cd-based system is fun! My son is using it to run netscape (remote
X) to visit pbskids.org. Loading apps (like X) from CD is slow the first
time, but fast later due to the filesystem buffering.