[9fans] bind and namespace
Antonin Vecera
can somebody help me to understand to bind and namespace ?
I made dir for manual pages in my $home and I wanted to bind it to /sys/man .
I typed:
1. term% bind -a $home/man/4 /sys/man/4
2. term% ns
3. bind /sys/man/4 /sys/man/4
4. bind -a /usr/antonin/man/4 /sys/man/4
5. term% unmount /sys/man/4 /sys/man/4
6. term% ns
7. bind /sys/man/4 /sys/man/4
a) I don't understand why is in my namespace added 3-th line?
b) if I unmounted /sys/man/4 on 5-th line, why is unmounted my
$home/man/4 instead and /sys/man/4 resides?
Antonin
Gorka Guardiola
means "add something to what there already is there", be it before or
after. You need an entry
for what there is already there so it gets resolved. That are the
extra lines you are looking at.
--
- curiosity sKilled the cat
Antonin Vecera
> When you do a bind -a or a bind -b you have a union mount. That means
> means "add something to what there already is there", be it before or
> after. You need an entry
Till now it's clear.
> for what there is already there so it gets resolved. That are the
> extra lines you are looking at.
...sorry, i don't understand. :-(
Why 1 bind command adds 2! lines with bind command to my namespace?
Why is added "bind /sys/man/4 /sys/man/4" to namespace?
Why is one dir mounted to itself?
Antonin
Gorka Guardiola
> Why 1 bind command adds 2! lines with bind command to my namespace?
> Why is added "bind /sys/man/4 /sys/man/4" to namespace?
> Why is one dir mounted to itself?
>
say you run:
bind -a /bla /tiki
This means "add an entry in the table under /tiki after what already exists".
If this is the first entry you have for /tiki, after doesn´t make
sense, you need
something already there. Hence, another entry binding /tiki in /tiki is added
before yours.
Antonin Vecera
In my home profile is "bind -a $home/bin/rc /bin" .
Why is not in my namespace line "bind -a /bin /bin" ?
What is different between
bind -a $home/bin/rc /bin
and
bind -a $home/man/4 /sys/man/4 ?
Antonin
Antonin
Martin Neubauer
> In my home profile is "bind -a $home/bin/rc /bin" .
> Why is not in my namespace line "bind -a /bin /bin" ?
> What is different between
> bind -a $home/bin/rc /bin
> and
> bind -a $home/man/4 /sys/man/4 ?
>
> Antonin
Essentially because before there is something like
bind $cputype/bin /bin
That assures that that there already is something $home/bin/rc can be
unioned to.
Martin
Antonin Vecera
Thank you! :-)
Antonin