Re: [9fans] clunk clunk

[Bruce Ellis <bruce.ellis@gmail.com>]

I can do anything I like Russ.  A fileserver is not the size of a fridge.
It's often a user process.  If you don't think this is a problem well
live with it.  I don't like rebooting a machine that's been running for
months because of this "bug".

Mother Mary may believe your explanation but it is a BUG which
I squashed.

brucee

On 1/4/06, Russ Cox <rsc@swtch.com> wrote:
> > Bullshit.  It happens all the time.  Rio+Plumber is a simple example.
>
> In the standard profile, as set up by /sys/lib/newuser
> or demonstrated in /usr/glenda/lib/profile,
> plumber is run before rio starts, so rio has
> plumber mounted but not vice versa:
>
> % grep plumb /proc/^`{ps|grep rio|awk '{print $2}'}^/ns
> /proc/86746/ns:mount  #s/plumb.rsc.86763 /mnt/plumb
> /proc/86768/ns:mount  #s/plumb.rsc.86763 /mnt/plumb
> /proc/86769/ns:mount  #s/plumb.rsc.86763 /mnt/plumb
> /proc/86770/ns:mount  #s/plumb.rsc.86763 /mnt/plumb
> /proc/86771/ns:mount  #s/plumb.rsc.86763 /mnt/plumb
> /proc/86772/ns:mount  #s/plumb.rsc.86763 /mnt/plumb
> /proc/86773/ns:mount  #s/plumb.rsc.86763 /mnt/plumb
> % grep rio /proc/^`{ps|grep plumb|awk '{print $2}'}^/ns
> %
>
> If you want to actually cause a loop, then you could run
> plumber in your riostart (as in rio -i riostart) file.  But there
> are plenty of ways to shoot yourself in the foot with
> ref count loops if you really want to go there.  A much
> more direct one is to run a file server that mounts
> itself into its own name space.
>
> Russ
>