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xen-users
[Xen-users] Re: [Fedora-xen] Guest VM dropping connection.
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@xxxxxxxxxxx
To: xen-users@xxxxxxxxxxxxxxxxxxx; fedora-xen@xxxxxxxxxx
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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