Re: dbootstrap now working, busybox needs serial con change.
Erik Andersen wrote:
> On Fri Nov 12, 1999 at 04:21:47PM +0100, Eric Delaunay wrote:
> > Adam Di Carlo wrote:
> > > Erik Andersen <andersen@xmission.com> writes:
> >
> > > > Hmm. I've been thinking about writing a micro syslogd for busybox, and I
> > > > could have busybox just log this crap to to the syslog. Then those that
> > > > want to see logging stuff could add something like this to /etc/init.d/rcS:
> > > >
> > > > # Setup a 256k ramdisk on /dev/ram2 and mount it over /var
> > > > # so syslogd can log stuff...
> > > > #
> > > > echo -n "Building ramdisks: "
> > > > dd if=/dev/zero of=/dev/ram2 bs=1k count=256 > /dev/null 2>&1
> > > > /bin/mkfs.ext2 -n30 /dev/ram2 256 > /dev/null 2>&1
> > > > mount /dev/ram2 /var -t ext2 -o rw
> > > > mkdir /var/log
> > > > echo "done."
> > >
> > > Yuck yuck yuck. Isn't there a better (simpler) way?
> >
> > I like this solution especially for nfsroot because the filesystem could then
> > be mounted read-only instead of rw with root access. It will be more secure.
> > We could then write all temporary data to /var/tmp for instance.
> >
> > I don't think it is needed for initrd because the ramdisk is already writable.
> > Just keep enough space to store the log (256k could be too much, maybe 100k ?).
> >
>
> Ok, we have one for and one against (if I am considered neutral).
> If we can get a consensus, I will implement whatever folks decide
> on.
>
> I'm about to blow away my neutrality, but I like the usyslogd
> plus ram disk approach. We just mount the ram disk on /tmp, and
> make /var/{log,run,lib,whatever} symlinks to /tmp. Then we just
> decide on some arbitrary upper bound for tmp data (100k, 256k,
> whatever) and that will be the size of the ramdisk.
>
> How many tmp files are used during install? What are reasonable
> upper bounds on their sizes?
Just few bytes to keep the keyboard file name in /tmp/kbdconf and few others to
keep the network configuration under /tmp/notarget I presume.
--
Eric Delaunay | "La guerre justifie l'existence des militaires.
delaunay@lix.polytechnique.fr | En les supprimant." Henri Jeanson (1900-1970)
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