Re: [9fans] Welcome Plan 9 community

[Alexandru Gheorghe <alghe.global@gmail.com>]

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On 03/05/2014 10:23 PM, Alexandru Gheorghe wrote:
> On 03/04/2014 12:19 AM, Alexandru Gheorghe wrote:
>> On 03/03/2014 10:53 PM, Lyndon Nerenberg wrote:
>>>
>>> On Mar 3, 2014, at 12:52, Alexandru Gheorghe <alghe.global@gmail.com> wrote:
>>>
>>>> should we gather some configuration steps/examples for known stable
>>>> builds of vbox and post them in a wiki somewhere(?)
>>>
>>> Yes!  That's what the wiki is for.
>>>
>>
>> sure, I agree. I am only enquiring so as to brainstorm if we should
>> actually (and be better of) providing a sort of how-to in debugging
>> network setup on plan9 (besides what is already on the net).
>>
>> i.e., even if somebody runs into trouble (ultimately), it is better off
>> posting his output of:
>>
>> cat /net/ndb
>>
>> ls /net | grep ether (optional)
>> ls /net/ether*
>>
>> ip/ipconfig -DGP
>>
>>
>> in case he/she is running in recv timeout for 15 secs; shortcut:
>>
>> ppid=`{ps | grep ipconfig | awk '{print $2}'}
>> echo kill > /proc/$ppid/note
>>
>> sorry for the `   as I am writing from GNU/Linux
>>
>>
>> this may not fully represent what is needed, but this is what I could
>> gather in few minutes of man pages and some trial and error, after only
>> 30 minutes of Plan9 experience. so I am sure far more experienced users
>> from the mailinglist can contribute to the article
>>
>> I will try to tackle it this weekend from this approach/point of view,
>> maybe I can come up with something rather useful, if not, at least
>> networking setup for the build I use of vbox/os/v
> 
> ersion etc.
>>
> 
> Hmm, actually related to this, I encounter dhcprecv read timed out.
> I searched and seems there are some interrupt related "issues", this
> happens with VirtualBox (4.1.18_Debian r78361) for me, not on bare
> metal. NIC is in NAT, tried with a second NIC in bridged; definitely not
> the NIC as the below code also points out in  !0  and  !1
> 
> dhcp.c:
> -------
> void
> dhcprecv(void)
> {
> [...]
>         uchar buf[8000], vopts[256], taddr[IPaddrlen];
> [...]
>         memset(buf, 0, sizeof buf);
>         alarm(1000);
> !0      n = read(conf.fd, buf, sizeof buf);
>         alarm(0);
> 
>         if(n < 0){
>                 rerrstr(err, sizeof err);
>         !1      if(strstr(err, "interrupt") == nil)
>                         warning("dhcprecv: bad read: %s", err);
>                 else
>                         DEBUG("dhcprecv: read timed out");
>                 return;
> 
> 
> n <- ipconfig.h:
> ----------------
> typedef struct Conf Conf;
> [...]
> struct Conf
> {
> [...]
> 	/* dhcp specific */
> 	int	fd;
> 
> 
> Any ideas? I don't seem to find plan9.ini to try the fix Akshat Kumar
> pointed out in [1]; all the other answers from erik and ron are bare
> metal hardware related (like the original post). How to deal with this
> in VirtualBox?
> 
> Chipset is PIIX3 [2]
> 
> 
> References:
> [1]
> https://groups.google.com/forum/?_escaped_fragment_=topic/comp.os.plan9/9nlmIoY4-C8#!topic/comp.os.plan9/9nlmIoY4-C8
> 
> [2] https://www.virtualbox.org/manual/ch03.html#settings-motherboard
> (under Chipset section) -- there is another option "ICH9" and the MSI
> seems a plus; not sure how this will interact with Plan9 but I'll give
> it a go
> 

OK, bad idea. I got it fixed finally.

Chipset for motherboard certainly: PIIX3

NIC info:
- Attached: NAT
- Adapter type (changing this made it working): Intel PRO/1000 MT Server
(82545EM)
- Promisc. mode: Deny
- No port forwarding


Can ping IPs (Google dns: 8.8.8.8 for example), now I have to setup dns.

-- 
; Alexandru Gheorghe
; alghe.global {at} gmail {dot} com
; OpenPGP key ID 0xCAF985D2


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