Re: abusing mfs to make read-only

["matthew sporleder" <msporleder%gmail.com@localhost>]

On 5/7/07, matthew sporleder <msporleder%gmail.com@localhost> wrote:
> In an effort to save my CF card some writes, I added this to my fstab:
> /dev/wd0b       /var/run mfs rw,-s1m 0 0
> /dev/wd0b       /var/log mfs rw,-s10m 0 0
>
> (I would use tmpfs, but this is 3.1)
>
> and then modified /etc/rc.d/syslogd like so: (in syslogd_precmd())
>         #       Touch files in syslog.conf -- MSPO
>         if [ -f /etc/syslog.conf ]; then
>                 awk '{ if (($2 ~ /^\/var/) && ($0 !~ /^#/)) { system("touch " $2
> ); } }' /etc/syslog.conf
>         fi
>         #       END MSPO
>         return 0
>
> This should boot and read from the CF card like normal (I'm not using
> a crunchgen here) and then set the only places I write to be in
> memory.
>
> Can anyone think of another place writes might happen?
>
> Comments appreciated,
> _Matt

I also had to add:
critical_filesystems_local="/var/run /var/log"
to /etc/rc.conf.