[Xen-users] Network connection problem (ssh,nfs)

[Lars Staun Knudsen <debs@xxxxxxxxxx>]

Hi

I'm losing the network connection on both the Dom0 and the DomU's,
fx SSH is randomly losing the connection and nfs time-out for 30-60
seconds periods.
I've tried "ethtool -K ethN (rx off| sx off| sg off| tso off)" as
similar threads suggest to correct connection loss, but nothing.

Dom0 is based on Debian Etch Amd64 (AMD Athlon64 X2 3800+, 1GB RAM),
kernel 2.6.18-4, Xen-3.1.0 x86_64. The DomU's is also Debian Etch
Amd64 (lvm), based on the same kernel and i got a Windows 2003 (hvm)
host. The DomU's has fixed IP and MAC-address (00:16:3E:00:xx:xx).

The reason I use the binaries instead of the Debian packages is that
couldn't get Windows 2003 working. It works flawless on 3.1, but
instead it brought the network problem.

Dom0 has 2 NIC's. Eth0 is 172.16.0.2/27 and lanbr, and eth1 is
dmzbr. Unfortunately I never manageded to put the entire
configuration into "interfaces". But in the end it should give the
same result.

I turned debug on in Xen. And this is the part of the xend.log
either during or right after I lost the ssh connection to Dom0 and
to one of the DomU's, but not the one mentioned in the log.

/Lars


---------   /etc/network/interfaces  ------

auto eth0
iface eth0 inet static
        address 172.16.0.2
        netmask 255.255.255.224
        network 172.16.0.0
        broadcast 172.16.0.31
        gateway 172.16.0.1
        dns-nameservers 172.16.0.3 172.16.0.5
        pre-up /etc/xen/scripts/network-bridge start netdev=eth0
bridge=lanbr

auto eth1
iface eth1 inet manual

auto dmzbr
iface dmzbr inet manual
        bridge_ports eth1
        bridge_stp off
        bridge_fd 0
        bridge_maxwait 0
        bridge_helo 0


----------   Part of xend.log     ------------------------

[2007-09-05 12:42:16 5231] DEBUG (__init__:1072) SrvServer.cleanup()
[2007-09-05 12:42:16 5231] DEBUG (__init__:1072) XMLRPCServer.cleanup()
[2007-09-05 12:42:16 5231] DEBUG (__init__:1072) XMLRPCServer.cleanup()
[2007-09-05 12:42:16 5231] DEBUG (__init__:1072) cleanup_domains
[2007-09-05 12:42:16 5227] INFO (__init__:1072) Xend exited with
status 0.
[2007-09-05 12:42:16 6755] INFO (__init__:1072) Xend Daemon started
[2007-09-05 12:42:16 6755] INFO (__init__:1072) Xend changeset: Fri
May 18 15:44:01 2007 +0100 15041:2d268f9a6a8b.
[2007-09-05 12:42:16 6755] INFO (__init__:1072) Xend version: Unknown.
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072)
XendDomainInfo.recreate({'max_vcpu_id': 1, 'cpu_time':
174614927787L, 'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0,
'dying': 0, 'online_vcpus': 2, 'domid': 0, 'paused': 0, 'crashed':
0, 'running': 1, 'maxmem_kb': 17179869180L, 'shutdown': 0, 'mem_kb':
247808L, 'handle': [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
'blocked': 0, 'name': 'Domain-0'})
[2007-09-05 12:42:17 6755] INFO (__init__:1072) Recreating domain 0,
UUID 00000000-0000-0000-0000-000000000000. at /local/domain/0
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) Adding Domain: 0
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) number of vcpus to
use is 0
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072)
XendDomainInfo.recreate({'max_vcpu_id': 0, 'cpu_time': 68130304956L,
'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0, 'dying': 0,
'online_vcpus': 1, 'domid': 1, 'paused': 0, 'crashed': 0, 'running':
0, 'maxmem_kb': 98304L, 'shutdown': 0, 'mem_kb': 98304L, 'handle':
[45, 194, 2, 128, 149, 195, 36, 123, 129, 72, 32, 78, 196, 118, 119,
250], 'blocked': 1})
[2007-09-05 12:42:17 6755] INFO (__init__:1072) Recreating domain 1,
UUID 2dc20280-95c3-247b-8148-204ec47677fa. at /local/domain/1
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) Storing domain
details: {'name': 'Domain-0', 'console/limit': '1048576',
'memory/target': '247808', 'vm':
'/vm/00000000-0000-0000-0000-000000000000', 'domid': '0',
'cpu/0/availability': 'online', 'cpu/1/availability': 'online',
'control/platform-feature-multiprocessor-suspend': '1'}
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) Adding Domain: 1
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072)
XendDomainInfo.recreate({'max_vcpu_id': 0, 'cpu_time': 63343753061L,
'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0, 'dying': 0,
'online_vcpus': 1, 'domid': 2, 'paused': 0, 'crashed': 0, 'running':
0, 'maxmem_kb': 131072L, 'shutdown': 0, 'mem_kb': 131072L, 'handle':
[97, 175, 25, 215, 96, 111, 86, 16, 38, 151, 206, 97, 225, 211, 7,
127], 'blocked': 1})
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072)
XendDomainInfo.handleShutdownWatch
[2007-09-05 12:42:17 6755] INFO (__init__:1072) Recreating domain 2,
UUID 61af19d7-606f-5610-2697-ce61e1d3077f. at /local/domain/2
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) Adding Domain: 2
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072)
XendDomainInfo.recreate({'max_vcpu_id': 0, 'cpu_time': 72743415590L,
'ssidref': 0, 'hvm': 0, 'shutdown_reason': 0, 'dying': 0,
'online_vcpus': 1, 'domid': 3, 'paused': 0, 'crashed': 0, 'running':
0, 'maxmem_kb': 98304L, 'shutdown': 0, 'mem_kb': 98304L, 'handle':
[217, 52, 247, 214, 82, 0, 19, 194, 57, 133, 237, 12, 178, 179, 213,
213], 'blocked': 1})
[2007-09-05 12:42:17 6755] INFO (__init__:1072) Recreating domain 3,
UUID d934f7d6-5200-13c2-3985-ed0cb2b3d5d5. at /local/domain/3
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) Adding Domain: 3
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072)
XendDomainInfo.recreate({'max_vcpu_id': 0, 'cpu_time': 63398779796L,
'ssidref': 0, 'hvm': 1, 'shutdown_reason': 0, 'dying': 0,
'online_vcpus': 1, 'domid': 4, 'paused': 0, 'crashed': 0, 'running':
0, 'maxmem_kb': 421888L, 'shutdown': 0, 'mem_kb': 413568L, 'handle':
[13, 169, 8, 145, 186, 187, 232, 7, 250, 51, 87, 144, 27, 235, 245,
175], 'blocked': 1})
[2007-09-05 12:42:17 6755] INFO (__init__:1072) Recreating domain 4,
UUID 0da90891-babb-e807-fa33-57901bebf5af. at /local/domain/4
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: boot, val: c
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: fda, val: None
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: fdb, val: None
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: soundhw, val:
None
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: localtime, val: 0
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: serial, val: None
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: std-vga, val: 0
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: isa, val: 0
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: acpi, val: 1
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: usb, val: 1
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: usbdevice,
val: None
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) args: k, val: da
[2007-09-05 12:42:17 6755] DEBUG (__init__:1072) Adding Domain: 4
[2007-09-05 12:42:18 6755] DEBUG (__init__:1072)
XendDomainInfo.handleShutdownWatch
[2007-09-05 12:42:18 6755] DEBUG (__init__:1072)
XendDomainInfo.handleShutdownWatch
[2007-09-05 12:42:18 6755] DEBUG (__init__:1072) Storing domain
details: {'image/entry': '18446744071564165120', 'console/port':
'2', 'image/loader': 'generic', 'vm':
'/vm/d934f7d6-5200-13c2-3985-ed0cb2b3d5d5',
'control/platform-feature-multiprocessor-suspend': '1',
'image/guest-os': 'linux',
'image/features/writable-descriptor-tables': '1',
'image/hypercall-page': '18446744071564189696', 'memory/target':
'98304', 'image/guest-version': '2.6',
'image/features/supervisor-mode-kernel': '1', 'console/limit':
'1048576', 'image/paddr-offset': '18446744071562067968',
'image/virt-base': '18446744071562067968', 'image/suspend-cancel':
'1', 'cpu/0/availability': 'online',
'image/features/pae-pgdir-above-4gb': '1',
'image/features/writable-page-tables': '1',
'image/features/auto-translated-physmap': '1', 'name':
'cityhall.dom.dk', 'domid': '3', 'image/xen-version': 'xen-3.0'}
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VBD.set_device not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VBD.set_mode not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VBD.set_type not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VM.get_auto_power_on not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VM.set_auto_power_on not found
[2007-09-05 12:42:18 6755] DEBUG (__init__:1072)
XendDomainInfo.handleShutdownWatch
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VM.set_VCPUs_max not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VM.set_VCPUs_at_startup not found
[2007-09-05 12:42:18 6755] DEBUG (__init__:1072)
XendDomainInfo.handleShutdownWatch
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
debug.get_all not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
console.get_other_config not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
console.set_other_config not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VIF.get_network not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VIF.set_device not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VIF.set_MAC not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
VIF.set_MTU not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
session.get_all_records not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
event.get_record not found
[2007-09-05 12:42:18 6755] WARNING (__init__:1072) API call:
event.get_all not found
[2007-09-05 12:42:18 6755] INFO (__init__:1072) Opening Unix domain
socket XML-RPC server on /var/run/xend/xen-api.sock; authentication
has been disabled for this server.
[2007-09-05 12:42:18 6755] INFO (__init__:1072) Opening Unix domain
socket XML-RPC server on /var/run/xend/xmlrpc.sock.

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