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Date: Mon, 07 Mar 2011 11:13:27 +0800
From: Weiping Pan <panweiping3@...il.com>
To: Nicolas de Pesloüan
<nicolas.2p.debian@...il.com>
CC: Andy Gospodarek <andy@...yhouse.net>, netdev@...r.kernel.org,
bonding-devel@...ts.sourceforge.net, Linda Wang <lwang@...hat.com>
Subject: Re: bonding can't change to another slave if you ifdown the active
slave
On 03/05/2011 09:49 PM, Nicolas de Pesloüan wrote:
> Le 05/03/2011 03:53, Andy Gospodarek a écrit :
>> On Fri, Mar 04, 2011 at 10:15:17AM +0800, Weiping Pan wrote:
>>> Hi,
>>>
>>> I'm doing some Linux bonding driver test, and I find a problem in
>>> balance-rr mode.
>>> That's it can't change to another slave if you ifdown the active slave.
>>> Any comments are warmly welcomed!
>>>
>>> regards
>>> Weiping Pan
>>>
>>> My host is Fedora 14, and I install VirtualBox (4.0.2), and enable 4
>>> nics for the guest system.
>>
>> Does this mean you are passing 4 NICs from your host to your guest
>> (maybe via direct pci-device assignment to the guest) or are you
>> creating 4 virtual devices on the host that are in a bridge group on the
>> host?
>
> VirtualBox does not allow assignment of pci-device to the guest. The
> network interfaces on the guest are pure virtual one, with several
> modes available. In order to help you trouble shooting this problem,
> we need to know the mode form each of the virtual interfaces. Possible
> modes are NAT, bridged, internal-network, and host-only-network.
>
> Please provide the output of the following command:
>
> VBoxManage showvminfo <your-vm-uuid> | grep ^NIC
>
> To display your vm uuid, use the following command:
>
> VBoxManage list vms
[root@...alhost ~]# VBoxManage showvminfo
67b83c47-0ee2-46bc-b0ff-e0eb43edc1c2 |grep ^NIC
NIC 1: MAC: 0800270481A8, Attachment: Bridged Interface
'eth0', Cable connected: on, Trace: off (file: none), Type: 82540EM,
Reported speed: 0 Mbps, Boot priority: 0
NIC 2: MAC: 08002778F641, Attachment: Bridged Interface
'eth0', Cable connected: on, Trace: off (file: none), Type: 82540EM,
Reported speed: 0 Mbps, Boot priority: 0
NIC 3: MAC: 080027C408BA, Attachment: Bridged Interface
'eth0', Cable connected: on, Trace: off (file: none), Type: 82540EM,
Reported speed: 0 Mbps, Boot priority: 0
NIC 4: MAC: 080027DB339A, Attachment: Bridged Interface
'eth0', Cable connected: on, Trace: off (file: none), Type: 82540EM,
Reported speed: 0 Mbps, Boot priority: 0
NIC 5: disabled
NIC 6: disabled
NIC 7: disabled
NIC 8: disabled
And when guest starts, i find that:
NIC 1: eth7
NIC 2: eth6
NIC 3: eth9
NIC 4: eth8
>
>>
>> [...]
>>> [root@...alhost ~]# ifconfig eth7 down
>>
>> This is not a great way to test link failure with bonding. The best way
>> is to actually pull the cable so the interface is truly down.
>
> To virtually plug or unplug the cable from a virtual interface, use
> the following command, replacing the # with the interface number (from
> 1 to 8):
>
> VBoxManage controlvm setlinkstate# on
> VBoxManage controlvm setlinkstate# off
I repeat my test with your guide, but it still doesn't work!
First on my host,
ifconfig eth0:0 192.168.1.100 netmask 255.255.255.0 up
And restart my guest,
[root@...alhost ~]# ifconfig
eth6 Link encap:Ethernet HWaddr 08:00:27:78:F6:41
inet addr:10.66.65.128 Bcast:10.66.65.255 Mask:255.255.254.0
inet6 addr: fe80::a00:27ff:fe78:f641/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:22 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3608 (3.5 KiB) TX bytes:1152 (1.1 KiB)
eth7 Link encap:Ethernet HWaddr 08:00:27:04:81:A8
inet addr:10.66.65.53 Bcast:10.66.65.255 Mask:255.255.254.0
inet6 addr: fe80::a00:27ff:fe04:81a8/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:23 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3668 (3.5 KiB) TX bytes:1152 (1.1 KiB)
eth8 Link encap:Ethernet HWaddr 08:00:27:DB:33:9A
inet addr:10.66.65.237 Bcast:10.66.65.255 Mask:255.255.254.0
inet6 addr: fe80::a00:27ff:fedb:339a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:147 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:14783 (14.4 KiB) TX bytes:1152 (1.1 KiB)
eth9 Link encap:Ethernet HWaddr 08:00:27:C4:08:BA
inet addr:10.66.65.125 Bcast:10.66.65.255 Mask:255.255.254.0
inet6 addr: fe80::a00:27ff:fec4:8ba/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:147 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:14783 (14.4 KiB) TX bytes:1152 (1.1 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:880 (880.0 b) TX bytes:880 (880.0 b)
[root@...alhost ~]# ifconfig eth6 down
[root@...alhost ~]# ifconfig eth7 down
[root@...alhost ~]# ifconfig eth8 down
[root@...alhost ~]# ifconfig eth9 down
[root@...alhost ~]# ip route show
[root@...alhost ~]# ip neigh show
[root@...alhost ~]# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:880 (880.0 b) TX bytes:880 (880.0 b)
[root@...alhost ~]# dmesg -c &> /dev/null
[root@...alhost ~]# modprobe bonding mode=0 miimon=100
[root@...alhost ~]# ifconfig bond0 192.168.1.5 netmask 255.255.255.0 up
[root@...alhost ~]# ifenslave bond0 eth6
[root@...alhost ~]# ifenslave bond0 eth7
[root@...alhost ~]# dmesg
[ 164.865840] bonding: Ethernet Channel Bonding Driver: v3.6.0
(September 26, 2009)
[ 164.865845] bonding: MII link monitoring set to 100 ms
[ 181.186201] ADDRCONF(NETDEV_UP): bond0: link is not ready
[ 191.549252] bonding: bond0: enslaving eth6 as an active interface
with a down link.
[ 191.552653] e1000: eth6 NIC Link is Up 1000 Mbps Full Duplex, Flow
Control: RX
[ 191.586166] bonding: bond0: link status definitely up for interface eth6.
[ 191.586315] ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 193.420974] e1000: eth7 NIC Link is Up 1000 Mbps Full Duplex, Flow
Control: RX
[ 193.434907] bonding: bond0: enslaving eth7 as an active interface
with an up link.
[root@...alhost ~]# ifconfig
bond0 Link encap:Ethernet HWaddr 08:00:27:78:F6:41
inet addr:192.168.1.5 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe78:f641/64 Scope:Link
UP BROADCAST RUNNING MASTER MULTICAST MTU:1500 Metric:1
RX packets:95 errors:0 dropped:0 overruns:0 frame:0
TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:13415 (13.1 KiB) TX bytes:4140 (4.0 KiB)
eth6 Link encap:Ethernet HWaddr 08:00:27:78:F6:41
inet addr:10.66.65.128 Bcast:10.66.65.255 Mask:255.255.254.0
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:48 errors:0 dropped:0 overruns:0 frame:0
TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7464 (7.2 KiB) TX bytes:1822 (1.7 KiB)
eth7 Link encap:Ethernet HWaddr 08:00:27:78:F6:41
UP BROADCAST RUNNING SLAVE MULTICAST MTU:1500 Metric:1
RX packets:47 errors:0 dropped:0 overruns:0 frame:0
TX packets:13 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:5951 (5.8 KiB) TX bytes:2318 (2.2 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:16 errors:0 dropped:0 overruns:0 frame:0
TX packets:16 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:880 (880.0 b) TX bytes:880 (880.0 b)
[root@...alhost ~]# ping 192.168.1.100 -c 5
PING 192.168.1.100 (192.168.1.100) 56(84) bytes of data.
64 bytes from 192.168.1.100: icmp_req=1 ttl=64 time=1.98 ms
64 bytes from 192.168.1.100: icmp_req=2 ttl=64 time=0.955 ms
64 bytes from 192.168.1.100: icmp_req=3 ttl=64 time=0.209 ms
64 bytes from 192.168.1.100: icmp_req=4 ttl=64 time=0.277 ms
64 bytes from 192.168.1.100: icmp_req=5 ttl=64 time=0.289 ms
--- 192.168.1.100 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4002ms
rtt min/avg/max/mdev = 0.209/0.742/1.984/0.678 ms
[root@...alhost ~]# ip route show
192.168.1.0/24 dev bond0 proto kernel scope link src 192.168.1.5
10.66.64.0/23 dev eth6 proto kernel scope link src 10.66.65.128
metric 1
default via 10.66.65.254 dev eth6 proto static
[root@...alhost ~]# ip neigh show
192.168.1.100 dev bond0 lladdr 64:31:50:3a:b0:b5 STALE
And on host,
[root@...alhost ~]# VBoxManage controlvm
67b83c47-0ee2-46bc-b0ff-e0eb43edc1c2 setlinkstate2 off
Then on guest,
[root@...alhost ~]# ethtool eth6
Settings for eth6:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: No
Advertised auto-negotiation: Yes
Speed: Unknown!
Duplex: Unknown! (255)
Port: Twisted Pair
PHYAD: 0
Transceiver: internal
Auto-negotiation: on
MDI-X: Unknown
Supports Wake-on: umbg
Wake-on: d
Current message level: 0x00000007 (7)
Link detected: no
[root@...alhost ~]# dmesg
[ 164.865840] bonding: Ethernet Channel Bonding Driver: v3.6.0
(September 26, 2009)
[ 164.865845] bonding: MII link monitoring set to 100 ms
[ 181.186201] ADDRCONF(NETDEV_UP): bond0: link is not ready
[ 191.549252] bonding: bond0: enslaving eth6 as an active interface
with a down link.
[ 191.552653] e1000: eth6 NIC Link is Up 1000 Mbps Full Duplex, Flow
Control: RX
[ 191.586166] bonding: bond0: link status definitely up for interface eth6.
[ 191.586315] ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
[ 193.420974] e1000: eth7 NIC Link is Up 1000 Mbps Full Duplex, Flow
Control: RX
[ 193.434907] bonding: bond0: enslaving eth7 as an active interface
with an up link.
[ 202.018085] bond0: no IPv6 routers present
[ 238.834001] e1000: eth7 NIC Link is Up 1000 Mbps Full Duplex, Flow
Control: RX
[ 434.010205] e1000: eth6 NIC Link is Down
[ 434.011661] bonding: bond0: link status definitely down for interface
eth6, disabling it
[root@...alhost ~]# ping 192.168.1.100 -c 5
PING 192.168.1.100 (192.168.1.100) 56(84) bytes of data.
From 192.168.1.5 icmp_seq=2 Destination Host Unreachable
From 192.168.1.5 icmp_seq=3 Destination Host Unreachable
From 192.168.1.5 icmp_seq=4 Destination Host Unreachable
From 192.168.1.5 icmp_seq=5 Destination Host Unreachable
--- 192.168.1.100 ping statistics ---
5 packets transmitted, 0 received, +4 errors, 100% packet loss, time 4001ms
pipe 3
[root@...alhost ~]# ip route show
192.168.1.0/24 dev bond0 proto kernel scope link src 192.168.1.5
[root@...alhost ~]# ip neigh show
192.168.1.100 dev bond0 FAILED
ping on the guest while tcpdump on the host,
on guest:
[root@...alhost ~]# ping 192.168.1.100
PING 192.168.1.100 (192.168.1.100) 56(84) bytes of data.
From 192.168.1.5 icmp_seq=2 Destination Host Unreachable
From 192.168.1.5 icmp_seq=3 Destination Host Unreachable
From 192.168.1.5 icmp_seq=4 Destination Host Unreachable
From 192.168.1.5 icmp_seq=6 Destination Host Unreachable
From 192.168.1.5 icmp_seq=7 Destination Host Unreachable
From 192.168.1.5 icmp_seq=8 Destination Host Unreachable
From 192.168.1.5 icmp_seq=10 Destination Host Unreachable
From 192.168.1.5 icmp_seq=11 Destination Host Unreachable
From 192.168.1.5 icmp_seq=12 Destination Host Unreachable
From 192.168.1.5 icmp_seq=14 Destination Host Unreachable
From 192.168.1.5 icmp_seq=15 Destination Host Unreachable
From 192.168.1.5 icmp_seq=16 Destination Host Unreachable
From 192.168.1.5 icmp_seq=18 Destination Host Unreachable
From 192.168.1.5 icmp_seq=19 Destination Host Unreachable
From 192.168.1.5 icmp_seq=20 Destination Host Unreachable
^C
--- 192.168.1.100 ping statistics ---
21 packets transmitted, 0 received, +15 errors, 100% packet loss, time
20005ms
pipe 3
on host:
[root@...alhost ~]# tcpdump -i eth0 -p arp
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
11:00:50.474242 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:50.474256 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:52.469651 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:52.469661 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:52.632719 ARP, Request who-has dhcp-65-29.nay.redhat.com tell
corerouter.nay.redhat.com, length 46
11:00:53.192150 ARP, Request who-has dhcp-65-14.nay.redhat.com tell
corerouter.nay.redhat.com, length 46
11:00:53.471246 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:53.471257 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:54.474627 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:54.474636 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:56.472050 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:56.472060 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:57.475211 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:57.475220 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:58.476840 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:58.476849 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:00:58.624738 ARP, Request who-has dhcp-65-29.nay.redhat.com tell
corerouter.nay.redhat.com, length 46
11:01:00.477029 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
11:01:00.477038 ARP, Request who-has 192.168.1.100 tell 192.168.1.5,
length 28
^C
19 packets captured
19 packets received by filter
0 packets dropped by kernel
[root@...alhost ~]# ip neigh show
192.168.1.5 dev eth0 lladdr 08:00:27:78:f6:41 STALE
10.66.65.254 dev eth0 lladdr 00:1d:45:20:d5:ff REACHABLE
regards
Weiping Pan
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