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[Xen-users] Re: Fw: domU network problem , 10/30 progress

To: Hao Yu <yuh@xxxxxxxxxx>
Subject: [Xen-users] Re: Fw: domU network problem , 10/30 progress
From: Hao Yu <yuh@xxxxxxxxxx>
Date: Tue, 31 Oct 2006 13:50:46 -0500
Cc: Edi Shmueli <shedi@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxx, Doron Shiloach <doron@xxxxxxxxxx>, Dilma M Da silva <dilmasilva@xxxxxxxxxx>, Dan E Poff <poff@xxxxxxxxxx>, David M Daly <dmdaly@xxxxxxxxxx>, Jiuxing Liu <jl@xxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx
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Hi,

This is just to report that the problem of 'brctl' is fixed by installing
the latest bridge-utils rpm : bridge-utils-1.2-5.ppc64.rpm .

With the latest bridge-utils installed, I
. used the original /etc/xen/scripts/xen-network-common.sh
. changed the vif line in the domU configuration file to "vif = [ '' ]"
domU is booted properly with dhcp working. the 'brctl show', 'brctl
showmacs xenbr1' kind of commands give similar output as the reference
machine (Dans js20 running sles 10).

However, the ping-out still gives 'no buffer space available' after exact
12 successfuly echo-replies.


Details:
. On dan's machine, the bridge-utils version, based rpm -qa, is
bridge-utils-1.0.6-14.1 . I could not find the exact package through
rpmfind. I used the latest version . Here is the binary package : (See
attached file: bridge-utils-1.2-5.ppc64.rpm)
. David, today, on blade cso83, GPFS directory is mounting during booting.
Dilma looked at it. Now we need to (1) kill the runmmfs process first, and
then (2) run mmstartup to mount /gpfs1xen . This maybe due to your change
to the cso script as you mentioned ?


Regards,
Hao

Hao Yu

Commercial Scale Out
IBM T.J. Watson Research Center
1101 Kitchawan Rd/Route 134, Rm 36-019
Yorktown Heights, NY 10598-0218
914-945-1854, Email: yuh@xxxxxxxxxx


                                                                           
             Hao Yu/Watson/IBM                                             
                                                                           
             10/31/2006 09:53                                           To 
             AM                        xen-users@xxxxxxxxxxxxxxxxxxx,      
                                       xen-devel@xxxxxxxxxxxxxxxxxxx       
                                                                        cc 
                                                                           
                                                                   Subject 
                                       Fw: domU network problem , 10/30    
                                       progress                            
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           



Hao Yu

Commercial Scale Out
IBM T.J. Watson Research Center
1101 Kitchawan Rd/Route 134, Rm 36-019
Yorktown Heights, NY 10598-0218
914-945-1854, Email: yuh@xxxxxxxxxx
----- Forwarded by Hao Yu/Watson/IBM on 10/31/2006 09:52 AM -----
                                                                           
             Jimi                                                          
             Xenidis/Watson/IB                                             
             M                                                          To 
                                       Hao Yu/Watson/IBM@IBMUS             
             10/31/2006 09:36                                           cc 
             AM                        Dan E Poff/Watson/IBM@IBMUS, David  
                                       M Daly/Watson/IBM@IBMUS, Dilma M Da 
                                       silva/Watson/IBM@IBMUS, Doron       
                                       Shiloach/Watson/IBM@IBMUS, Edi      
                                       Shmueli/Watson/IBM@IBMUS, Jack      
                                       Kouloheris/Watson/IBM@IBMUS,        
                                       Jiuxing Liu/Watson/IBM@IBMUS,       
                                       Jonghyuk Choi/Watson/IBM@IBMUS      
                                                                   Subject 
                                       Re: domU network problem , 10/30    
                                       progress(Document link: Hao Yu)     
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           



PLEASE, post these to the mailing list, it is important that the community
sees these issues.
I'm happy you have some networking, I have some more network stability
fixes that I'll be pushing shortly.
-JX


                                                                           
             Hao Yu/Watson/IBM                                             
                                                                           
             10/30/06 05:16 PM                                          To 
                                       Jimi Xenidis/Watson/IBM@IBMUS       
                                                                        cc 
                                       David M Daly/Watson/IBM@IBMUS, Edi  
                                       Shmueli/Watson/IBM@IBMUS, Jonghyuk  
                                       Choi/Watson/IBM@IBMUS, Dan E        
                                       Poff/Watson/IBM@IBMUS, Jiuxing      
                                       Liu/Watson/IBM@IBMUS, Doron         
                                       Shiloach/Watson/IBM@IBMUS, Dilma M  
                                       Da silva/Watson/IBM@IBMUS, Jack     
                                       Kouloheris/Watson/IBM@IBMUS         
                                                                   Subject 
                                       domU network problem , 10/30        
                                       progress(Document link: Jimi        
                                       Xenidis)                            
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           



Hi Jimi,

Dan, Jiuxing and I worked together on the problem. First we have following
summaries

1.  the problem is now 'domU network not working properly' :
ping-to-outside runs into error after 30 seconds ; domU hangs in nc/netcat
test when receiving long stream (MB or so). For the pint-to-outside issue,
when domU runs into error, outside can still ping to the domU.

   cso238:/ # ping 9.2.78.83
   PING 9.2.78.83 (9.2.78.83) 56(84) bytes of data.
   64 bytes from 9.2.78.83: icmp_seq=1 ttl=64 time=28.8 ms
   64 bytes from 9.2.78.83: icmp_seq=2 ttl=64 time=4.24 ms
   64 bytes from 9.2.78.83: icmp_seq=3 ttl=64 time=3.81 ms
   64 bytes from 9.2.78.83: icmp_seq=4 ttl=64 time=10.0 ms
   64 bytes from 9.2.78.83: icmp_seq=5 ttl=64 time=5.05 ms
   64 bytes from 9.2.78.83: icmp_seq=6 ttl=64 time=9.65 ms
   64 bytes from 9.2.78.83: icmp_seq=7 ttl=64 time=10.0 ms
   64 bytes from 9.2.78.83: icmp_seq=8 ttl=64 time=10.0 ms
   64 bytes from 9.2.78.83: icmp_seq=9 ttl=64 time=3.96 ms
   64 bytes from 9.2.78.83: icmp_seq=10 ttl=64 time=10.0 ms
   64 bytes from 9.2.78.83: icmp_seq=11 ttl=64 time=3.89 ms
   64 bytes from 9.2.78.83: icmp_seq=12 ttl=64 time=2.73 ms
   ping: sendmsg: No buffer space available
   ping: sendmsg: No buffer space available
   ping: sendmsg: No buffer space available
   ping: sendmsg: No buffer space available
   ping: sendmsg: No buffer space available
   ping: sendmsg: No buffer space available
   ping: sendmsg: No buffer space available

2. brctl does not work properly on our environment. 'strace brctl show'
indicates 'ioctl(3, SIOCGIFBR, 0xffc381d4)         = -1 EINVAL (Invalid
argument)' . And on SLES 10 environment, brctl show works fine.

In addition, how the dhcp problem is gone ? Bulent reconfiged the dhcp
server to have more show-live IP available . Now, domU can get IP

   cso238:/ # ifconfig
   eth0      Link encap:Ethernet  HWaddr 00:16:3E:F9:BB:B3
             inet addr:9.2.78.238  Bcast:9.2.78.255  Mask:255.255.255.0
             UP BROADCAST NOTRAILERS RUNNING MULTICAST  MTU:1500  Metric:1
             RX packets:39 errors:0 dropped:0 overruns:0 frame:0
             TX packets:19 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:1000
             RX bytes:3884 (3.7 Kb)  TX bytes:2508 (2.4 Kb)

   lo        Link encap:Local Loopback
             inet addr:127.0.0.1  Mask:255.0.0.0
             UP LOOPBACK RUNNING  MTU:16436  Metric:1
             RX packets:20 errors:0 dropped:0 overruns:0 frame:0
             TX packets:20 errors:0 dropped:0 overruns:0 carrier:0
             collisions:0 txqueuelen:0
             RX bytes:1256 (1.2 Kb)  TX bytes:1256 (1.2 Kb)

We thought the 'ping error' problem seemed non trivial.

Regards,
Hao



Hao Yu

Commercial Scale Out
IBM T.J. Watson Research Center
1101 Kitchawan Rd/Route 134, Rm 36-019
Yorktown Heights, NY 10598-0218
914-945-1854, Email: yuh@xxxxxxxxxx

Attachment: bridge-utils-1.2-5.ppc64.rpm
Description: Binary data

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