* Re: [9fans] [sources] applied patch: /n/atom/patch/applied/termrcnodhcp
[not found] <250d3e7e5500a6e7d72c8ab3d49f9641@coraid.com>
@ 2013-10-15 12:32 ` Steffen Daode Nurpmeso
2013-10-15 12:58 ` erik quanstrom
` (2 more replies)
0 siblings, 3 replies; 5+ messages in thread
From: Steffen Daode Nurpmeso @ 2013-10-15 12:32 UTC (permalink / raw)
To: erik quanstrom; +Cc: Fans of the OS Plan 9 from Bell Labs
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Hello,
erik quanstrom <quanstro@labs.coraid.com> wrote:
|email
| quanstro@quanstro.net
|readme
| don't dhcp by default. it looks like a hang.
[.]
|+ #if(! test -e /net/ipifc/0/ctl || ~ 127.0.0.1 `{cat /net/ipifc/0/local})
|+ # ip/ipconfig >/dev/null >[2=1]
[.]
after looking into the ipconfig source and placing some fprint()
the actual "hang" is caused by a faulty length of the sleep.
If i add
--- a/sys/src/cmd/ip/ipconfig/main.c
+++ b/sys/src/cmd/ip/ipconfig/main.c
@@ -469,6 +469,12 @@ main(int argc, char **argv)
int retry, action;
Ctl *cp;
+ for (retry = 0; retry < 10; ++retry) {
+ long t = time(nil);
+ fprint(2, "retry %d, time %ld\n", retry, t);
+ sleep(1000);
+ }
+
init();
retry = 0;
ARGBEGIN {
then each tick sleeps ~1 second (sometimes a tick needed 3 in the
tests i've done). But if i add
--- a/sys/src/cmd/ip/ipconfig/main.c
+++ b/sys/src/cmd/ip/ipconfig/main.c
@@ -621,10 +621,13 @@ doadd(int retry)
if(dodhcp){
mkclientid();
for(tries = 0; tries < 30; tries++){
+ long t;
dhcpquery(!noconfig, Sselecting);
if(conf.state == Sbound)
break;
sleep(1000);
+ t = time(nil);
+ fprint(2, "retry %d, time %ld\n", tries, t);
}
}
then that sleep takes reproducably 12 seconds. Without having any
ideas what this could be about (VirtualBox?), i nonetheless wonder
wether something like this would be imaginable, since a time
difference is used later on in the code, too:
--- a/sys/src/cmd/ip/ipconfig/main.c
+++ b/sys/src/cmd/ip/ipconfig/main.c
@@ -619,12 +619,15 @@ doadd(int retry)
/* run dhcp if we need something */
if(dodhcp){
+ long start = time(nil);
mkclientid();
for(tries = 0; tries < 30; tries++){
dhcpquery(!noconfig, Sselecting);
if(conf.state == Sbound)
break;
sleep(1000);
+ if (tries > 1 && time(nil) - start > 30)
+ break;
}
}
Apologies for the patch format (it's all half-baked here).
--steffen
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From: erik quanstrom <quanstro@labs.coraid.com>
To: sources@9atom.org
Subject: [sources] applied patch: /n/atom/patch/applied/termrcnodhcp
Date: Sun, 13 Oct 2013 13:18:00 -0400
Message-ID: <250d3e7e5500a6e7d72c8ab3d49f9641@coraid.com>
email
quanstro@quanstro.net
readme
don't dhcp by default. it looks like a hang.
set sysname, even if ndb not cooperative
use diskparts instead of inline code
removed
files
/rc/bin/termrc termrc
/rc/bin/termrc termrc
termrc.orig:10,18 - termrc:10,22
mntgen -s slashn && chmod 666 /srv/slashn
ndb/cs -f $ndbfile
sysname=`{cat /dev/sysname}
+ if(~ $#sysname 0){
+ sysname = gnot
+ echo -n $sysname >/dev/sysname
+ }
- if(! test -e /net/ipifc/0/ctl || ~ 127.0.0.1 `{cat /net/ipifc/0/local})
- ip/ipconfig >/dev/null >[2=1]
+ #if(! test -e /net/ipifc/0/ctl || ~ 127.0.0.1 `{cat /net/ipifc/0/local})
+ # ip/ipconfig >/dev/null >[2=1]
if(test -e /net/ipifc/0/ctl)
ndb/dns -rf $ndbfile
for(i in /net/ether?)
termrc.orig:30,41 - termrc:34,44
for(i in A w f t m u v L '$' Ι Σ κ æ ©)
/bin/bind -a '#'^$i /dev >/dev/null >[2=1]
- for(disk in /dev/sd??) {
- if(test -f $disk/data && test -f $disk/ctl)
- disk/fdisk -p $disk/data >$disk/ctl >[2]/dev/null
- for(part in $disk/plan9*)
- if(test -f $part)
- disk/prep -p $part >$disk/ctl >[2]/dev/null
+ diskparts
+ sysname=`{cat /dev/sysname}
+ if (~ $#sysname 0 || ~ $sysname '') {
+ sysname = gnot
+ echo -n $sysname >/dev/sysname
}
# hacks
------
merge...backup...copy...
cpfile termrc /n/dist/rc/bin/termrc
# remove these files if you want. I will not remove them for you
# (apatch/undo will not restore them)
done
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [9fans] [sources] applied patch: /n/atom/patch/applied/termrcnodhcp
2013-10-15 12:32 ` [9fans] [sources] applied patch: /n/atom/patch/applied/termrcnodhcp Steffen Daode Nurpmeso
@ 2013-10-15 12:58 ` erik quanstrom
2013-10-15 13:15 ` Steffen Daode Nurpmeso
[not found] ` <ca2e3c3a59e76e71362f34b52b6502fc@coraid.com>
2 siblings, 0 replies; 5+ messages in thread
From: erik quanstrom @ 2013-10-15 12:58 UTC (permalink / raw)
To: 9fans
> then each tick sleeps ~1 second (sometimes a tick needed 3 in the
> tests i've done). But if i add
hmm. can you explain more about the environment, and kernel you
were using? i'd like to correct the kernel timing. sleep(n) must be
fairly accurate. i would define that as accurate to ±1/HZ on an
otherwise unloaded system.
- erik
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [9fans] [sources] applied patch: /n/atom/patch/applied/termrcnodhcp
2013-10-15 12:32 ` [9fans] [sources] applied patch: /n/atom/patch/applied/termrcnodhcp Steffen Daode Nurpmeso
2013-10-15 12:58 ` erik quanstrom
@ 2013-10-15 13:15 ` Steffen Daode Nurpmeso
[not found] ` <ca2e3c3a59e76e71362f34b52b6502fc@coraid.com>
2 siblings, 0 replies; 5+ messages in thread
From: Steffen Daode Nurpmeso @ 2013-10-15 13:15 UTC (permalink / raw)
To: erik quanstrom; +Cc: Fans of the OS Plan 9 from Bell Labs
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hmm, i'm braindead.
And that made it especially hard to deal with ipconfig(8):
by default, ipconfig exits after trying DHCP for 15 seconds
with no answer
--steffen
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[-- Type: message/rfc822, Size: 5964 bytes --]
[-- Attachment #2.1.1: Type: text/plain, Size: 2057 bytes --]
Hello,
erik quanstrom <quanstro@labs.coraid.com> wrote:
|email
| quanstro@quanstro.net
|readme
| don't dhcp by default. it looks like a hang.
[.]
|+ #if(! test -e /net/ipifc/0/ctl || ~ 127.0.0.1 `{cat /net/ipifc/0/local})
|+ # ip/ipconfig >/dev/null >[2=1]
[.]
after looking into the ipconfig source and placing some fprint()
the actual "hang" is caused by a faulty length of the sleep.
If i add
--- a/sys/src/cmd/ip/ipconfig/main.c
+++ b/sys/src/cmd/ip/ipconfig/main.c
@@ -469,6 +469,12 @@ main(int argc, char **argv)
int retry, action;
Ctl *cp;
+ for (retry = 0; retry < 10; ++retry) {
+ long t = time(nil);
+ fprint(2, "retry %d, time %ld\n", retry, t);
+ sleep(1000);
+ }
+
init();
retry = 0;
ARGBEGIN {
then each tick sleeps ~1 second (sometimes a tick needed 3 in the
tests i've done). But if i add
--- a/sys/src/cmd/ip/ipconfig/main.c
+++ b/sys/src/cmd/ip/ipconfig/main.c
@@ -621,10 +621,13 @@ doadd(int retry)
if(dodhcp){
mkclientid();
for(tries = 0; tries < 30; tries++){
+ long t;
dhcpquery(!noconfig, Sselecting);
if(conf.state == Sbound)
break;
sleep(1000);
+ t = time(nil);
+ fprint(2, "retry %d, time %ld\n", tries, t);
}
}
then that sleep takes reproducably 12 seconds. Without having any
ideas what this could be about (VirtualBox?), i nonetheless wonder
wether something like this would be imaginable, since a time
difference is used later on in the code, too:
--- a/sys/src/cmd/ip/ipconfig/main.c
+++ b/sys/src/cmd/ip/ipconfig/main.c
@@ -619,12 +619,15 @@ doadd(int retry)
/* run dhcp if we need something */
if(dodhcp){
+ long start = time(nil);
mkclientid();
for(tries = 0; tries < 30; tries++){
dhcpquery(!noconfig, Sselecting);
if(conf.state == Sbound)
break;
sleep(1000);
+ if (tries > 1 && time(nil) - start > 30)
+ break;
}
}
Apologies for the patch format (it's all half-baked here).
--steffen
[-- Attachment #2.1.2: Original message content --]
[-- Type: message/rfc822, Size: 2815 bytes --]
From: erik quanstrom <quanstro@labs.coraid.com>
To: sources@9atom.org
Subject: [sources] applied patch: /n/atom/patch/applied/termrcnodhcp
Date: Sun, 13 Oct 2013 13:18:00 -0400
Message-ID: <250d3e7e5500a6e7d72c8ab3d49f9641@coraid.com>
email
quanstro@quanstro.net
readme
don't dhcp by default. it looks like a hang.
set sysname, even if ndb not cooperative
use diskparts instead of inline code
removed
files
/rc/bin/termrc termrc
/rc/bin/termrc termrc
termrc.orig:10,18 - termrc:10,22
mntgen -s slashn && chmod 666 /srv/slashn
ndb/cs -f $ndbfile
sysname=`{cat /dev/sysname}
+ if(~ $#sysname 0){
+ sysname = gnot
+ echo -n $sysname >/dev/sysname
+ }
- if(! test -e /net/ipifc/0/ctl || ~ 127.0.0.1 `{cat /net/ipifc/0/local})
- ip/ipconfig >/dev/null >[2=1]
+ #if(! test -e /net/ipifc/0/ctl || ~ 127.0.0.1 `{cat /net/ipifc/0/local})
+ # ip/ipconfig >/dev/null >[2=1]
if(test -e /net/ipifc/0/ctl)
ndb/dns -rf $ndbfile
for(i in /net/ether?)
termrc.orig:30,41 - termrc:34,44
for(i in A w f t m u v L '$' Ι Σ κ æ ©)
/bin/bind -a '#'^$i /dev >/dev/null >[2=1]
- for(disk in /dev/sd??) {
- if(test -f $disk/data && test -f $disk/ctl)
- disk/fdisk -p $disk/data >$disk/ctl >[2]/dev/null
- for(part in $disk/plan9*)
- if(test -f $part)
- disk/prep -p $part >$disk/ctl >[2]/dev/null
+ diskparts
+ sysname=`{cat /dev/sysname}
+ if (~ $#sysname 0 || ~ $sysname '') {
+ sysname = gnot
+ echo -n $sysname >/dev/sysname
}
# hacks
------
merge...backup...copy...
cpfile termrc /n/dist/rc/bin/termrc
# remove these files if you want. I will not remove them for you
# (apatch/undo will not restore them)
done
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [9fans] [sources] applied patch: /n/atom/patch/applied/termrcnodhcp
[not found] ` <ca2e3c3a59e76e71362f34b52b6502fc@coraid.com>
@ 2013-10-15 13:19 ` Steffen Daode Nurpmeso
2013-10-15 13:22 ` erik quanstrom
0 siblings, 1 reply; 5+ messages in thread
From: Steffen Daode Nurpmeso @ 2013-10-15 13:19 UTC (permalink / raw)
To: erik quanstrom; +Cc: Fans of the OS Plan 9 from Bell Labs
erik quanstrom <quanstro@labs.coraid.com> wrote:
|- 9fans
|
|thanks for the interest!
no, i'm just totally brain dead.
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [9fans] [sources] applied patch: /n/atom/patch/applied/termrcnodhcp
2013-10-15 13:19 ` Steffen Daode Nurpmeso
@ 2013-10-15 13:22 ` erik quanstrom
0 siblings, 0 replies; 5+ messages in thread
From: erik quanstrom @ 2013-10-15 13:22 UTC (permalink / raw)
To: 9fans
On Tue Oct 15 09:20:16 EDT 2013, sdaoden@gmail.com wrote:
> erik quanstrom <quanstro@labs.coraid.com> wrote:
> |- 9fans
> |
> |thanks for the interest!
>
> no, i'm just totally brain dead.
i didn't think so. seems like sleep should be fixed. but i need
more information on your environment to fix it.
if you're running 9atom, could you send me the output of
- aux/cpuid -iv
- pci
- cat '#P/cputype'
- erik
^ permalink raw reply [flat|nested] 5+ messages in thread
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[not found] <250d3e7e5500a6e7d72c8ab3d49f9641@coraid.com>
2013-10-15 12:32 ` [9fans] [sources] applied patch: /n/atom/patch/applied/termrcnodhcp Steffen Daode Nurpmeso
2013-10-15 12:58 ` erik quanstrom
2013-10-15 13:15 ` Steffen Daode Nurpmeso
[not found] ` <ca2e3c3a59e76e71362f34b52b6502fc@coraid.com>
2013-10-15 13:19 ` Steffen Daode Nurpmeso
2013-10-15 13:22 ` erik quanstrom
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