[Fedora-xen] Guest VM dropping connection.
Mark Nielsen
mnielsen at redhat.com
Tue Jan 15 18:28:17 UTC 2008
are you seeing any messages on the host about the network bouncing?
Ubaidul Khan wrote:
> I am still experiencing the same problems but I am seeing some weird messages in /var/log/messages:
>
> Jan 15 10:48:32 tsubo-dr kernel: device eth0 left promiscuous mode
> Jan 15 10:49:50 tsubo-dr kernel: Removing netfilter NETLINK layer.
> Jan 15 10:49:50 tsubo-dr kernel: ip_tables: (C) 2000-2006 Netfilter Core Team
> Jan 15 10:49:50 tsubo-dr kernel: Netfilter messages via NETLINK v0.30.
> Jan 15 10:49:50 tsubo-dr kernel: ip_conntrack version 2.4 (8192 buckets, 65536 max) - 304 bytes per conntrack
> Jan 15 10:49:56 tsubo-dr kernel: device eth0 entered promiscuous mode
> Jan 15 10:50:25 tsubo-dr kernel: device eth0 left promiscuous mode
> Jan 15 10:54:08 tsubo-dr kernel: device eth0 entered promiscuous mode
> Jan 15 10:54:37 tsubo-dr kernel: device eth0 left promiscuous mode
>
> The loss of connection is happening during the windows when the interface enters/leaves promiscuious mode.
> ----------------------------------------
>
>> From: ukhanlists at hotmail.com
>> To: xen-users at lists.xensource.com; fedora-xen at redhat.com
>> Date: Mon, 30 Jul 2007 22:04:45 -0400
>> CC:
>> Subject: [Fedora-xen] Guest VM dropping connection.
>>
>> I am running RHEL5 Guest and Host. The guest OS is dropping network
>> connections occasionally(I noticed my ssh session suddenly terminated). The
>> guest is configured with private network interface and a public network
>> interface. Following are the bridge/network settings for the host:
>>
>> bridge name bridge id STP enabled interfaces
>> xenbr0 8000.feffffffffff no vif2.0
>>
>> vif1.0
>>
>> peth0
>>
>> vif0.0
>>
>> xenbr1 8000.fefffffffffe no vif2.1
>>
>> peth1
>>
>> vif0.3
>>
>> xenbr1 is dedicated to provide the private network link for the guest os.
>> Following is the guest OS configuration:
>>
>> # Automatically generated xen config file
>> name = "saleen_webvm0"
>> memory = "1000"
>> disk = [
>> 'tap:aio:/vms/img/redhat/linux/es/5.0/x86_64/saleen_webvm0.img,xvda,w','phy:/dev/sdc,xvdb,w'
>> ]
>> vif = [ 'mac=00:16:3e:2e:6f:e1, bridge=xenbr0','mac=00:16:3e:2f:9e:b1,
>> bridge=xenbr1',]
>> # vif = [ 'mac=00:16:3e:2e:6f:e1, bridge=xenbr0',]
>> vfb = ["type=vnc,vncunused=1"]
>> uuid = "122374dc-26a3-cb0d-99f8-3393e2481777"
>> bootloader="/usr/bin/pygrub"
>> vcpus=2
>> on_reboot = 'restart'
>> on_crash = 'restart'
>>
>> Following is the output of ifconfig:
>>
>> eth0 Link encap:Ethernet HWaddr 00:14:4F:40:D8:70
>> inet addr:xxx.xxx.xxx.xxx Bcast:xxx.xxx.xxx.255
>> Mask:255.255.255.0
>> inet6 addr: fe80::214:4fff:fe40:d870/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:79313 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:1167 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:0
>> RX bytes:6619719 (6.3 MiB) TX bytes:115448 (112.7 KiB)
>>
>> eth1 Link encap:Ethernet HWaddr 00:14:4F:40:D8:71
>> inet addr:xxx.xxx.xxx.xxx Bcast:xxx.xxx.xxx.255
>> Mask:255.255.255.0
>> inet6 addr: fe80::214:4fff:fe40:d871/64 Scope:Link
>> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
>> RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:0
>> RX bytes:0 (0.0 b) TX bytes:720 (720.0 b)
>>
>> peth0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
>> inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>> UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
>> RX packets:105404 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:13455 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:9122426 (8.6 MiB) TX bytes:1997833 (1.9 MiB)
>> Base address:0x8c00 Memory:fa5e0000-fa600000
>>
>> peth1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FE
>> inet6 addr: fe80::fcff:ffff:feff:fffe/64 Scope:Link
>> UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
>> RX packets:9239102 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:5337342 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:1000
>> RX bytes:12420212276 (11.5 GiB) TX bytes:523849820 (499.5 MiB)
>> Base address:0x8800 Memory:fa5c0000-fa5e0000
>>
>> vif1.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
>> inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>> UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
>> RX packets:2174 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:80032 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:32
>> RX bytes:446031 (435.5 KiB) TX bytes:6941997 (6.6 MiB)
>>
>> vif2.0 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
>> inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>> UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
>> RX packets:10084 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:89284 errors:0 dropped:0 overruns:0 carrier:0
>> collisions:0 txqueuelen:32
>> RX bytes:1186096 (1.1 MiB) TX bytes:7380350 (7.0 MiB)
>>
>> vif2.1 Link encap:Ethernet HWaddr FE:FF:FF:FF:FF:FF
>> inet6 addr: fe80::fcff:ffff:feff:ffff/64 Scope:Link
>> UP BROADCAST RUNNING NOARP MTU:1500 Metric:1
>> RX packets:5337343 errors:0 dropped:0 overruns:0 frame:0
>> TX packets:9239082 errors:0 dropped:20 overruns:0 carrier:0
>> collisions:0 txqueuelen:32
>> RX bytes:403712612 (385.0 MiB) TX bytes:12383227754 (11.5 GiB)
>>
>> Any help is greately appreciated.
>>
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>
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