A fuse based initfs

[Andrew Bartlett]

On Thu, 2007-08-23 at 18:02 -0400, Jon Nettleton wrote: 
> On 8/22/07, Douglas McClendon <dmc.fedora at filteredperception.org> wrote:

> >
> > In general, it sounds like you are outlining several different
> > problem/solutions, but I don't think they all need to be as tightly
> > integrated as you suggest.
> >
> > For instance, the gdm in initramfs (or very very early).  Why do you
> > need this copy-on-write rootfs stuff?  Why not just have a tmpfs, and a
> > gdm configuration that looks there.  Likewise for the early logging
> > stuff.  Later during boot, the early-boot logfiles in tmpfs can be
> > copied to /var/log.  This isn't as nice as the magic
> > unionfs/dm-snapshot-merge automagic merging.  But I don't think that is
> > necessary and worth the steps you are taking to get it.
> 
> The problem is that all the X gdm talk is through fifo sockets.  This
> busies the filesystems
> and makes it impossible to just copy things around.  If we want the
> boot process to be
> smooth and seamless we are going to need some sort of ability to write
> to a "read only" filesystem in place.

Why not just put the fifo on a tmpfs, and keep it around for the life of
the system.  Being tmpfs, it cleans up nicely when shut down.  There are
many other reasons to move the X socket from /tmp (selinux etc).  

Would a permanent symlink from /tmp -> a tmpfs mounted on /var/run/X
solve the legacy issues?

Andrew Bartlett

-- 
Andrew Bartlett
http://samba.org/~abartlet/
Authentication Developer, Samba Team           http://samba.org
Samba Developer, Red Hat Inc.
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