Re: devfs vs udev, thoughts from a devfs user

viro
2004-02-11T07:50:53Z

On Tue, Feb 10, 2004 at 05:16:00PM -0800, Greg KH wrote:
> On Tue, Feb 10, 2004 at 03:39:00PM -0500, Bill Rugolsky Jr. wrote:
> > On Tue, Feb 10, 2004 at 01:11:36PM -0700, Kevin P. Fleming wrote:
> > > devfs is "single-instance": it can be mounted during initrd/initramfs
> > > processing, then remounted after pivot_root without losing its contents
> > >
> > > Granted, I'm sure someone can come up with a single-instance ramfs
> > > filesystem that can be used for udev, but today it does not exist.
> >
> > mount --move olddir newdir
>
> Doesn't work for what we want here:
>
> $ mkdir /tmp/a /tmp/b
> $ mount -t ramfs none /tmp/a
> $ touch /tmp/a/foo
> $ mount --move /tmp/a /tmp/b
> $ ls /tmp/b
> foo
> $ umount /tmp/a
> $ ls /tmp/b
> $
>
> Hm, not nice :(

Huh? Is that a bug report or just your guess at what would happen if you
tried the above?

If it _does_ happen - we have a problem and I'd like to know which versions
have such bug.