[Xen-users] HVM vif Backend not found

[Max E Baro <MEB@xxxxxxxxxxxxxxxxx>]

Hi,

 

I have a Dell with a VT processor (930) and an trying to configure and start an HVM domain to install and run Windows XP.  I'm having trouble figuring out why the VM fails to start.

 

I consistently get the message:

 

[root@ws146l xen]# xm create xenWinXP.hvm
Using config file "xenWinXP.hvm".
Error: Device 0 (vif) could not be connected. Backend device not found.

 

I installed ioemu according to the instructions found in the README file.

 

I can't seem to find what backend device it's trying to access.  Here is my config:

 

cat: xenWinxp.hvm: No such file or directory
[root@ws146l xen]# cat xenWinxp.hvmXP.hvm
#  -*- mode: python; -*-
#============================================================================
# Python configuration setup for 'xm create'.
# This script sets the parameters used when a domain is created using 'xm create'.
# You use a separate script for each domain you want to create, or
# you can set the parameters for the domain on the xm command line.
#============================================================================

 

import os, re
arch = os.uname()[4]
if re.search('64', arch):
    arch_libdir = 'lib64'
else:
    arch_libdir = 'lib'

 

#----------------------------------------------------------------------------
# Kernel image file.
kernel = "/usr/lib/xen/boot/hvmloader"

 

# The domain build function. HVM domain uses 'hvm'.
builder='hvm'

 

# Initial memory allocation (in megabytes) for the new domain.
memory = 786

 

# A name for your domain. All domains must have different names.
name = "WS146"

 

#-----------------------------------------------------------------------------
# the number of cpus guest platform has, default=1
vcpus=1

 

# enable/disable HVM guest PAE, default=0 (disabled)
pae=0

 

# enable/disable HVM guest ACPI, default=0 (disabled)
acpi=0

 

# enable/disable HVM guest APIC, default=0 (disabled)
apic=0

 

# List of which CPUS this domain is allowed to use, default Xen picks
#cpus = ""         # leave to Xen to pick
cpus = ""        # all vcpus run on CPU0
#cpus = "0-3,5,^1" # run on cpus 0,2,3,5

 

# Optionally define mac and/or bridge for the network interfaces.
# Random MACs are assigned if not given.
#vif = [ 'type=ioemu, mac=00:16:3e:00:00:11, bridge=xenbr0' ]
# type=ioemu specify the NIC is an ioemu device not netfront
vif = [ 'type=ioemu' ]

 

#----------------------------------------------------------------------------
# Define the disk devices you want the domain to have access to, and
# what you want them accessible as.
# Each disk entry is of the form phy:UNAME,DEV,MODE
# where UNAME is the device, DEV is the device name the domain will see,
# and MODE is r for read-only, w for read-write.

 

disk = [ 'phy:/dev/sda6,ioemu:hda,w' ]
#disk = [ 'file:/var/images/min-el3-i386.img,ioemu:hda,w' ]

 

#----------------------------------------------------------------------------
# Configure the behaviour when a domain exits.  There are three 'reasons'
# for a domain to stop: poweroff, reboot, and crash.  For each of these you
# may specify:
#
#   "destroy",        meaning that the domain is cleaned up as normal;
#   "restart",        meaning that a new domain is started in place of the old
#                     one;
#   "preserve",       meaning that no clean-up is done until the domain is
#                     manually destroyed (using xm destroy, for example); or
#   "rename-restart", meaning that the old domain is not cleaned up, but is
#                     renamed and a new domain started in its place.
#
# The default is
#
#  
#   on_reboot   = 'restart'
#   on_crash    = 'restart'
#
# For backwards compatibility we also support the deprecated option restart
#
# restart = 'onreboot' means
#                            on_reboot   = 'restart'
#                            on_crash    = 'destroy'
#
# restart = 'always'   means
#                            on_reboot   = 'restart'
#                            on_crash    = 'restart'
#
# restart = 'never'    means
#                            on_reboot   = 'destroy'
#                            on_crash    = 'destroy'

 

#
#on_reboot   = 'restart'
#on_crash    = 'restart'

 

#============================================================================

 

# New stuff
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'

 

#-----------------------------------------------------------------------------
# Disk image for
#cdrom=/dev/hda

 

#-----------------------------------------------------------------------------
# boot on floppy (a), hard disk (c) or CD-ROM (d)
#boot=[a|c|d]
boot='d'
#-----------------------------------------------------------------------------
#  write to temporary files instead of disk image files
#snapshot=1

 

#----------------------------------------------------------------------------
# enable SDL library for graphics, default = 0
sdl=1

 

#----------------------------------------------------------------------------
# enable VNC library for graphics, default = 1
vnc=0

 

#----------------------------------------------------------------------------
# enable spawning vncviewer(only valid when vnc=1), default = 1
vncviewer=0

 

#----------------------------------------------------------------------------
# no graphics, use serial port
#nographic=0

 

#----------------------------------------------------------------------------
# enable stdvga, default = 0 (use cirrus logic device model)
stdvga=0

 

#-----------------------------------------------------------------------------
#   serial port re-direct to pty deivce, /dev/pts/n
#   then xm console or minicom can connect
serial='pty'

 

#----------------------------------------------------------------------------
# enable ne2000, default = 0(use pcnet)
ne2000=0

 

#-----------------------------------------------------------------------------
#   enable audio support
#audio=1

 

#-----------------------------------------------------------------------------
#    set the real time clock to local time [default=0 i.e. set to utc]
#localtime=1

 

#-----------------------------------------------------------------------------
#    start in full screen
#full-screen=1  

 

Here is xend.log:

 

[2006-06-15 15:29:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:178) XendDomainInfo.create(['vm', ['name', 'WS146'], ['memory', 786], ['vcpus', 1], ['cpus', ''], ['image', ['hvm', ['kernel', '/usr/lib/xen/boot/hvmloader'], ['device_model', '/usr/lib64/xen/bin/qemu-dm'], ['vcpus', 1], ['boot', 'd'], ['serial', 'pty'], ['sdl', 1], ['display', ':0.0'], ['xauthority', '/root/.Xauthority']]], ['device', ['vbd', ['uname', 'phy:/dev/sda6'], ['dev', 'ioemu:hda'], ['mode', 'w']]], ['device', ['vif', ['type', 'ioemu']]]])
[2006-06-15 15:29:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:284) parseConfig: config is ['vm', ['name', 'WS146'], ['memory', 786], ['vcpus', 1], ['cpus', ''], ['image', ['hvm', ['kernel', '/usr/lib/xen/boot/hvmloader'], ['device_model', '/usr/lib64/xen/bin/qemu-dm'], ['vcpus', 1], ['boot', 'd'], ['serial', 'pty'], ['sdl', 1], ['display', ':0.0'], ['xauthority', '/root/.Xauthority']]], ['device', ['vbd', ['uname', 'phy:/dev/sda6'], ['dev', 'ioemu:hda'], ['mode', 'w']]], ['device', ['vif', ['type', 'ioemu']]]]
[2006-06-15 15:29:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:380) parseConfig: result is {'ssidref': None, 'uuid': None, 'on_crash': None, 'on_reboot': None, 'image': ['hvm', ['kernel', '/usr/lib/xen/boot/hvmloader'], ['device_model', '/usr/lib64/xen/bin/qemu-dm'], ['vcpus', 1], ['boot', 'd'], ['serial', 'pty'], ['sdl', 1], ['display', ':0.0'], ['xauthority', '/root/.Xauthority']], 'on_poweroff': None, 'cpus': '', 'name': 'WS146', 'backend': [], 'vcpus': 1, 'cpu_weight': None, 'vcpu_avail': None, 'memory': 786, 'device': [('vbd', ['vbd', ['uname', 'phy:/dev/sda6'], ['dev', 'ioemu:hda'], ['mode', 'w']]), ('vif', ['vif', ['type', 'ioemu']])], 'bootloader': None, 'cpu': None, 'maxmem': None}
[2006-06-15 15:29:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:1164) XendDomainInfo.construct: None 0
[2006-06-15 15:29:09 xend.XendDomainInfo] DEBUG (XendDomainInfo:1196) XendDomainInfo.initDomain: 10 1.0
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: cdrom, val: None
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: boot, val: d
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: fda, val: None
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: fdb, val: None
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: nic-ne2000, val: None
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: enable-audio, val: None
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: localtime, val: None
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: serial, val: pty
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: std-vga, val: None
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: isa, val: None
[2006-06-15 15:29:09 xend] DEBUG (image:266) args: vcpus, val: 1
[2006-06-15 15:29:09 xend] DEBUG (balloon:126) Balloon: free 1492; need 787; done.
[2006-06-15 15:29:10 xend] INFO (image:135) buildDomain os=hvm dom=10 vcpus=1
[2006-06-15 15:29:10 xend] DEBUG (image:224) dom            = 10
[2006-06-15 15:29:10 xend] DEBUG (image:225) image          = /usr/lib/xen/boot/hvmloader
[2006-06-15 15:29:10 xend] DEBUG (image:226) store_evtchn   = 1
[2006-06-15 15:29:10 xend] DEBUG (image:227) memsize        = 786
[2006-06-15 15:29:10 xend] DEBUG (image:228) vcpus          = 1
[2006-06-15 15:29:10 xend] DEBUG (image:229) pae            = 0
[2006-06-15 15:29:10 xend] DEBUG (image:230) acpi           = 0
[2006-06-15 15:29:10 xend] DEBUG (image:231) apic           = 0
[2006-06-15 15:29:10 xend] DEBUG (image:396) hvm shutdown watch registered
[2006-06-15 15:29:10 xend] DEBUG (DevController:103) DevController: writing {'state': '1', 'backend-id': '0', 'backend': '/local/domain/0/backend/vbd/10/768'} to /local/domain/10/device/vbd/768.
[2006-06-15 15:29:10 xend] DEBUG (DevController:105) DevController: writing {'domain': 'WS146', 'frontend': '/local/domain/10/device/vbd/768', 'dev': 'ioemu:hda', 'state': '1', 'params': '/dev/sda6', 'mode': 'w', 'frontend-id': '10', 'type': 'phy'} to /local/domain/0/backend/vbd/10/768.
[2006-06-15 15:29:10 xend] DEBUG (DevController:103) DevController: writing {'state': '1', 'backend-id': '0', 'backend': '/local/domain/0/backend/vif/10/0'} to /local/domain/10/device/vif/0.
[2006-06-15 15:29:10 xend] DEBUG (DevController:105) DevController: writing {'domain': 'WS146', 'handle': '0', 'script': '/etc/xen/scripts/vif-bridge', 'state': '1', 'frontend': '/local/domain/10/device/vif/0', 'mac': '00:16:3e:3a:00:da', 'frontend-id': '10', 'type': 'ioemu'} to /local/domain/0/backend/vif/10/0.
[2006-06-15 15:29:10 xend] INFO (image:355) spawning device models: /usr/lib64/xen/bin/qemu-dm ['/usr/lib64/xen/bin/qemu-dm', '-d', '10', '-m', '786', '-boot', 'd', '-serial', 'pty', '-vcpus', '1', '-domain-name', 'WS146', '-hda', '/dev/sda6', '-macaddr', '00:16:3e:5e:38:b5', '-bridge', 'xenbr0', '-nics', '1']
[2006-06-15 15:29:10 xend] INFO (image:357) device model pid: 18966
[2006-06-15 15:29:10 xend.XendDomainInfo] DEBUG (XendDomainInfo:671) Storing VM details: {'ssidref': '0', 'uuid': 'a8e200cd-071b-2c7f-7d97-99d23790b129', 'on_reboot': 'restart', 'start_time': '1150399750.2', 'on_poweroff': 'destroy', 'name': 'WS146', 'vcpus': '1', 'vcpu_avail': '1', 'memory': '786', 'on_crash': 'restart', 'image': '(hvm (kernel /usr/lib/xen/boot/hvmloader) (device_model /usr/lib64/xen/bin/qemu-dm) (vcpus 1) (boot d) (serial pty) (sdl 1) (display :0.0) (xauthority /root/.Xauthority))', 'maxmem': '786'}
[2006-06-15 15:29:10 xend.XendDomainInfo] DEBUG (XendDomainInfo:696) Storing domain details: {'console/port': '2', 'name': 'WS146', 'console/limit': '1048576', 'vm': '/vm/a8e200cd-071b-2c7f-7d97-99d23790b129', 'domid': '10', 'cpu/0/availability': 'online', 'memory/target': '804864', 'store/ring-ref': '442775', 'store/port': '1'}
[2006-06-15 15:29:10 xend] DEBUG (DevController:132) Waiting for devices vif.
[2006-06-15 15:29:10 xend] DEBUG (image:419) hvm_shutdown fired, shutdown reason=None
[2006-06-15 15:29:10 xend] DEBUG (DevController:138) Waiting for 0.
[2006-06-15 15:29:10 xend.XendDomainInfo] DEBUG (XendDomainInfo:877) XendDomainInfo.handleShutdownWatch
[2006-06-15 15:29:10 xend] DEBUG (DevController:403) hotplugStatusCallback /local/domain/0/backend/vif/10/0/hotplug-status.
[2006-06-15 15:29:11 xend] DEBUG (DevController:403) hotplugStatusCallback /local/domain/0/backend/vif/10/0/hotplug-status.
[2006-06-15 15:29:11 xend] DEBUG (DevController:417) hotplugStatusCallback 2.
[2006-06-15 15:29:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:1327) XendDomainInfo.destroy: domid=10
[2006-06-15 15:29:11 xend.XendDomainInfo] DEBUG (XendDomainInfo:1335) XendDomainInfo.destroyDomain(10)
[2006-06-15 15:29:11 xend] DEBUG (image:408) hvm shutdown watch unregistered

 

Any Ideas??

Max

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