Re: Debian on Read Only root fs: what files are opened rw?
On Mon, Mar 07, 2005 at 03:39:34PM +0000, Chris Boot wrote:
> Hi all,
>
> I've got a running debian system on an embedded server. It currently
> runs off a 2.5" HD, but I'd like to move it off that and onto a
> CompactFlash disk. So that the drive doesn't burn out, I'd like to use
> SquashFS to store the root FS read-only and link certain parts of the fs
> to /dev/shm.
>
> How can I find out what files are opened read/write? Obviously I'll keep
> /var/log, /var/run, and /tmp on there, but what other portions of the FS
> are likely to be written to? What changes to the standard startup
> scripts are necessary to prevent them from remount the root FS read/write?
>
> I've tried using lsof for this, but I'm not sure I can get an easy list
> from it, including just files and directories, and only those that are
> opened rw...
>
> Many thanks,
> Chris
>
> PS: I'm trying to use Debian Sarge with a custom-built 2.6.10/2.6.11
> kernel with grsec and other hardware-specific patches.
>
Hi Chris,
you may want to google for 'pebble linux', it was designed for running
debian on a cf card for a soekris board.
-Kev
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