Comments on Jon Hart's Blog: OpenBSD on Soekris -- A Cheater's Guide

Awesome blogpost, best MFS guide on the net so far...

2008-08-19T13:56:00.000-07:00

Awesome blogpost, best MFS guide on the net so far.

I found some small socket, .db issues, but nothing major. :)

I detailed my installation procedure in this post;

http://techblagh.blogspot.com/2008/08/installing-openbsd-43-on-soekris-5501.html

Cheers

Laurent,I read your comment and said to myself "It...

2008-07-03T00:25:00.000-07:00

Laurent,

I read your comment and said to myself "It just works". Then I went and took a look at my Soekris and, sure enough, / is mounted rw, however that is probably because I've needed to update my pf.conf a few times since last boot.

I am not sure how this post has gone this long without me noticing this slight discrepancy.

The catch is this point:

Most volatile stuff lives on /var and /dev, which is mounted rw in memory. The rsync in rc.shutdown and cron is designed to keep this in sync with what is in /mfs so that it can be repopulate at boot.

However the problem is that the cronjob and rc.shutdown should temporarily remount / rw to succeed, because with / mounted ro they will certainly fail:

# mount -o ro /
# mount
/dev/wd0a on / type ffs (local, noatime, read-only)
mfs:2518 on /var type mfs (asynchronous, local, noexec, nosuid, size=32768 512-blocks)
mfs:25922 on /dev type mfs (asynchronous, local, noexec, nosuid, size=8192 512-blocks)
# touch /var/blah
# touch /mfs/var/blah
touch: /mfs/var/blah: Read-only file system

Thanks for pointing this out. If I am correct in my assumptions, I'll update this post accordingly.

Thanks!

-jon

Jon,Nice guide. One question for you though - as I...

2008-07-02T23:21:00.000-07:00

Jon,

Nice guide. One question for you though - as I understand it, /var is being synced back to /mfs/var, however /mfs resides in / which has been mounted read-only. How is it that you sync back to a read-only filesystem?

Laurent