* [9fans] newns(2) and fileservers
@ 2013-02-02 0:21 erik quanstrom
2013-02-02 4:04 ` cinap_lenrek
2013-02-08 18:42 ` Ярослав Коломієць
0 siblings, 2 replies; 8+ messages in thread
From: erik quanstrom @ 2013-02-02 0:21 UTC (permalink / raw)
To: 9fans
i want to use /lib/namespace.$servername to mount
a second file server. the second file server is not running
exportfs; and i would like to mount it directly
and not import it.
i think i must be missing something, but i can't figure out
how to do this.
import fruitcake!9fs / /n/fruitcake
doesn't work (and in fact hangs) because fruitcake isn't
listening to exportfs. "mount" doesn't work because it
requires open not dial to yield a fd.
am i missing something? if so, how do i do this?
if not, then i propose the following change to
/sys/src/libauth/newns.c:
static int
callexport(char *sys, char *tree)
{
char *na, buf[3];
int fd;
AuthInfo *ai;
na = netmkaddr(sys, 0, "exportfs");
if((fd = dial(na, 0, 0, 0)) < 0)
return -1;
>> if(strstr(na, "!exportfs") == nil)
>> return fd;
i agree that "import" as the directive seems a bit
wrong. perhaps a more extensive change could be worked
up for a new verb called "srv" or some such?
- erik
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] newns(2) and fileservers
2013-02-02 0:21 [9fans] newns(2) and fileservers erik quanstrom
@ 2013-02-02 4:04 ` cinap_lenrek
2013-02-02 4:16 ` erik quanstrom
2013-02-08 18:42 ` Ярослав Коломієць
1 sibling, 1 reply; 8+ messages in thread
From: cinap_lenrek @ 2013-02-02 4:04 UTC (permalink / raw)
To: 9fans
why do you want to dial a new connection all the time when the namespace
is created? 9fs multiplexes multiple attaches thru a single connection.
so all you need is to run srv once, which would yield a file in /srv,
and then just mount that in your namespace file no?
--
cinap
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] newns(2) and fileservers
2013-02-02 4:04 ` cinap_lenrek
@ 2013-02-02 4:16 ` erik quanstrom
2013-02-02 4:35 ` cinap_lenrek
0 siblings, 1 reply; 8+ messages in thread
From: erik quanstrom @ 2013-02-02 4:16 UTC (permalink / raw)
To: 9fans
On Fri Feb 1 23:06:03 EST 2013, cinap_lenrek@gmx.de wrote:
> why do you want to dial a new connection all the time when the namespace
> is created? 9fs multiplexes multiple attaches thru a single connection.
> so all you need is to run srv once, which would yield a file in /srv,
> and then just mount that in your namespace file no?
it turns out that i do want it that way.
but let's turn things around, you could make the smae
argument against the existing import statement.
- erik
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] newns(2) and fileservers
2013-02-02 4:16 ` erik quanstrom
@ 2013-02-02 4:35 ` cinap_lenrek
2013-02-02 4:41 ` erik quanstrom
0 siblings, 1 reply; 8+ messages in thread
From: cinap_lenrek @ 2013-02-02 4:35 UTC (permalink / raw)
To: 9fans
A process is started on the remote machine, with authority
of the user of import, to perform work for the local machine
using the exportfs(4) service.
--
cinap
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] newns(2) and fileservers
2013-02-02 4:35 ` cinap_lenrek
@ 2013-02-02 4:41 ` erik quanstrom
2013-02-02 5:07 ` cinap_lenrek
0 siblings, 1 reply; 8+ messages in thread
From: erik quanstrom @ 2013-02-02 4:41 UTC (permalink / raw)
To: 9fans
On Fri Feb 1 23:36:38 EST 2013, cinap_lenrek@gmx.de wrote:
> A process is started on the remote machine, with authority
> of the user of import, to perform work for the local machine
> using the exportfs(4) service.
which sort of begs the question.
either a connection to the fs (via export or 9fs) is expensive, or it is not.
if you can afford a connection per process group for export, then why
can't you afford it for 9fs? ☺
- erik
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] newns(2) and fileservers
2013-02-02 4:41 ` erik quanstrom
@ 2013-02-02 5:07 ` cinap_lenrek
2013-02-02 5:14 ` erik quanstrom
0 siblings, 1 reply; 8+ messages in thread
From: cinap_lenrek @ 2013-02-02 5:07 UTC (permalink / raw)
To: 9fans
its not that i think. its that import makes a connection
and then authenticates the user (then might push ssl) and
then mounts. where 9fs, it doesnt matter who makes the
connection, and authentication is done for every attach/mount.
a namespace is created for a specific user. so to authenticate
with import, it has to make a new connection every time to
run the authentication.
--
cinap
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] newns(2) and fileservers
2013-02-02 5:07 ` cinap_lenrek
@ 2013-02-02 5:14 ` erik quanstrom
0 siblings, 0 replies; 8+ messages in thread
From: erik quanstrom @ 2013-02-02 5:14 UTC (permalink / raw)
To: 9fans
On Sat Feb 2 00:08:41 EST 2013, cinap_lenrek@gmx.de wrote:
> its not that i think. its that import makes a connection
> and then authenticates the user (then might push ssl) and
> then mounts. where 9fs, it doesnt matter who makes the
> connection, and authentication is done for every attach/mount.
>
> a namespace is created for a specific user. so to authenticate
> with import, it has to make a new connection every time to
> run the authentication.
well known and not really realated to my question.
- erik
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [9fans] newns(2) and fileservers
2013-02-02 0:21 [9fans] newns(2) and fileservers erik quanstrom
2013-02-02 4:04 ` cinap_lenrek
@ 2013-02-08 18:42 ` Ярослав Коломієць
1 sibling, 0 replies; 8+ messages in thread
From: Ярослав Коломієць @ 2013-02-08 18:42 UTC (permalink / raw)
To: Fans of the OS Plan 9 from Bell Labs
2 лют. 2013 о 02:21 erik quanstrom <quanstro@quanstro.net> написав(ла):
> i want to use /lib/namespace.$servername to mount
> a second file server. the second file server is not running
> exportfs; and i would like to mount it directly
> and not import it.
We used to run srv(4) from a startup script for this purpose.
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2013-02-08 18:42 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
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2013-02-02 0:21 [9fans] newns(2) and fileservers erik quanstrom
2013-02-02 4:04 ` cinap_lenrek
2013-02-02 4:16 ` erik quanstrom
2013-02-02 4:35 ` cinap_lenrek
2013-02-02 4:41 ` erik quanstrom
2013-02-02 5:07 ` cinap_lenrek
2013-02-02 5:14 ` erik quanstrom
2013-02-08 18:42 ` Ярослав Коломієць
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