thr3ads.net - Xen users - [Xen-users] exception looking up device number for hda1: [Errno 2] No such file or directory: ''/dev/hda1'' [Aug 2008]

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Mike Raath

2008-Aug-28 12:24 UTC

[Xen-users] exception looking up device number for hda1: [Errno 2] No such file or directory: ''/dev/hda1''

Hi,

I''ve been trying for days to get a simple xen domU installed on a
Debian
Etch system, but I''m going round in circles getting steadily more and
more
frustrated.

My host machine is, as I say, Etch running the 2.6.18-6-xen-686 kernel. Xen
is 3.0.3-1. I''ve tried a few tutorials, but the most recent was this
one:
http://www.howtoforge.com/debian_etch_xen_from_debian_repository

The only real differences between that tutorial and my steps are that I
don''t use the vserver kernel and I commented out the initrd line (I
don''t
need a RAM disk, although on other attempts to get it working I did
uncomment it).

The command I use to create the image:
#xen-create-image --debootstrap --hostname xen-etch --dhcp --dist=etch --ide
--force

Here''s the xen-tools config:

-- Start
-- End


Here are the contents of my xen-etch config file:

-- Start
kernel  = ''/boot/vmlinuz-2.6.18-6-xen-686''
memory  = ''128''
root    = ''/dev/hda1 ro''
disk    = [ ''file:/home/xen/domains/xen-etch/disk.img,hda1,w'',
''file:/home/xen/domains/xen-etch/swap.img,hda2,w'' ]
name    = ''xen-etch''
dhcp = ''dhcp''
vif  = [ '''' ]
on_poweroff = ''destroy''
on_reboot   = ''restart''
on_crash    = ''restart''
-- End

I then create the domain using sudo xm create xen-etch.cfg and it appears to
create correctly:

# mraath@ld2:~$ sudo xm create xen-etch.cfg
# Using config file "/etc/xen/xen-etch.cfg".
# Started domain xen-etch

However, when I try to attach to the console, it reports that it
couldn''t
find the disk device.

# mraath@ld2:~$ sudo xm console xen-etch
# Error: Domain ''xen-etch'' does not exist.
# Usage: xm console <Domain>
#
# Attach to <Domain>''s console.

An extract from the log file shows this:

-- Start

[2008-08-28 14:18:52 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.construct: None
[2008-08-28 14:18:52 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.initDomain: 19 1.0
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) Balloon: 131828 KiB
free; need 131072; done.
[2008-08-28 14:18:52 xend 3289] INFO (__init__:1072) buildDomain os=linux
dom=19 vcpus=1
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) dom            = 19
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) image         
/boot/vmlinuz-2.6.18-6-xen-686
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) store_evtchn   = 1
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) console_evtchn = 2
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) cmdline       
ip=:1.2.3.4::::eth0:dhcp root=/dev/hda1 ro
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) ramdisk        [2008-08-28
14:18:52 xend 3289] DEBUG (__init__:1072) vcpus          = 1
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) features       [2008-08-28
14:18:52 xend 3289] DEBUG (__init__:1072) exception looking up
device number for hda1: [Errno 2] No such file or directory:
''/dev/hda1''
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) DevController: writing
{''backend-id'': ''0'',
''virtual-device'': ''769'',
''device-type'': ''disk'',
''state'':
''1'', ''backend'':
''/local/domain/0/backend/vbd/19/769''} to
/local/domain/19/device/vbd/769.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) DevController: writing
{''domain'': ''xen-etch'',
''frontend'':
''/local/domain/19/device/vbd/769'', ''dev'':
''hda1'', ''state'': ''1'',
''params'':
''/home/xen/domains/xen-etch/disk.img'',
''mode'': ''w'', ''online'':
''1'', ''frontend-id'': ''19'',
''type'': ''file''} to
/local/domain/0/backend/vbd/19/769.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) exception looking up
device number for hda2: [Errno 2] No such file or directory:
''/dev/hda2''
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) DevController: writing
{''backend-id'': ''0'',
''virtual-device'': ''770'',
''device-type'': ''disk'',
''state'':
''1'', ''backend'':
''/local/domain/0/backend/vbd/19/770''} to
/local/domain/19/device/vbd/770.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) DevController: writing
{''domain'': ''xen-etch'',
''frontend'':
''/local/domain/19/device/vbd/770'', ''dev'':
''hda2'', ''state'': ''1'',
''params'':
''/home/xen/domains/xen-etch/swap.img'',
''mode'': ''w'', ''online'':
''1'', ''frontend-id'': ''19'',
''type'': ''file''} to
/local/domain/0/backend/vbd/19/770.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) DevController: writing
{''backend-id'': ''0'', ''mac'':
''00:16:3e:73:16:1d'', ''handle'':
''0'', ''state'': ''1'',
''backend'':
''/local/domain/0/backend/vif/19/0''} to
/local/domain/19/device/vif/0.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) DevController: writing
{''domain'': ''xen-etch'',
''handle'': ''0'', ''script'':
''/etc/xen/scripts/vif-bridge'', ''state'':
''1'', ''frontend'':
''/local/domain/19/device/vif/0'', ''mac'':
''00:16:3e:73:16:1d'', ''online'':
''1'',
''frontend-id'': ''19''} to
/local/domain/0/backend/vif/19/0.
[2008-08-28 14:18:52 xend.XendDomainInfo 3289] DEBUG (__init__:1072) Storing
VM details: {''shadow_memory'': ''0'',
''uuid'':
''3bc50a87-72ab-d4ab-e3d5-4bfded386524'',
''on_reboot'': ''restart'',
''start_time'': ''1219925932.43'',
''on_poweroff'': ''destroy'',
''name'': ''xen-etch'',
''xend/restart_count'': ''0'',
''vcpus'': ''1'',
''vcpu_avail'': ''1'',
''memory'': ''128'',
''on_crash'': ''restart'',
''image'': "(linux (kernel
/boot/vmlinuz-2.6.18-6-xen-686) (ip :1.2.3.4::::eth0:dhcp) (root
''/dev/hda1
ro''))", ''maxmem'': ''128''}
[2008-08-28 14:18:52 xend.XendDomainInfo 3289] DEBUG (__init__:1072) Storing
domain details: {''console/ring-ref'':
''827715'', ''console/port'':
''2'', ''name'':
''xen-etch'', ''console/limit'':
''1048576'', ''vm'':
''/vm/3bc50a87-72ab-d4ab-e3d5-4bfded386524'',
''domid'': ''19'',
''cpu/0/availability'': ''online'',
''memory/target'': ''131072'',
''store/ring-ref'':
''827716'', ''store/port'':
''1''}
[2008-08-28 14:18:52 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.handleShutdownWatch
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) Waiting for devices
vif.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) Waiting for 0.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) hotplugStatusCallback
/local/domain/0/backend/vif/19/0/hotplug-status.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) hotplugStatusCallback
/local/domain/0/backend/vif/19/0/hotplug-status.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) hotplugStatusCallback
1.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) Waiting for devices
usb.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) Waiting for devices
vbd.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) Waiting for 769.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) hotplugStatusCallback
/local/domain/0/backend/vbd/19/769/hotplug-status.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) hotplugStatusCallback
/local/domain/0/backend/vbd/19/769/hotplug-status.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) hotplugStatusCallback
1.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) Waiting for 770.
[2008-08-28 14:18:52 xend 3289] DEBUG (__init__:1072) hotplugStatusCallback
/local/domain/0/backend/vbd/19/770/hotplug-status.
[2008-08-28 14:18:53 xend 3289] DEBUG (__init__:1072) hotplugStatusCallback
/local/domain/0/backend/vbd/19/770/hotplug-status.
[2008-08-28 14:18:53 xend 3289] DEBUG (__init__:1072) hotplugStatusCallback
1.
[2008-08-28 14:18:53 xend 3289] DEBUG (__init__:1072) Waiting for devices
irq.
[2008-08-28 14:18:53 xend 3289] DEBUG (__init__:1072) Waiting for devices
pci.
[2008-08-28 14:18:53 xend 3289] DEBUG (__init__:1072) Waiting for devices
ioports.
[2008-08-28 14:18:53 xend 3289] DEBUG (__init__:1072) Waiting for devices
tap.
[2008-08-28 14:18:53 xend 3289] DEBUG (__init__:1072) Waiting for devices
vtpm.
[2008-08-28 14:18:53 xend 3289] INFO (__init__:1072) Domain xen-etch (19)
unpaused.
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] WARNING (__init__:1072)
Domain has crashed: name=xen-etch id=19.
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.destroyDomain(19)
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.create([''domain'', [''domid'',
19], [''uuid'',
''3bc50a87-72ab-d4ab-e3d5-4bfded386524''],
[''vcpus'', 1], [''vcpu_avail'', 1],
[''cpu_weight'', 1.0], [''memory'', 128],
[''shadow_memory'', 0], [''maxmem'', 128],
[''features'', ''''], [''name'',
''xen-etch''], [''on_poweroff'',
''destroy''],
[''on_reboot'', ''restart''],
[''on_crash'', ''restart''],
[''image'', [''linux'',
[''kernel'',
''/boot/vmlinuz-2.6.18-6-xen-686''], [''ip'',
'':1.2.3.4::::eth0:dhcp''],
[''root'', ''/dev/hda1 ro'']]],
[''device'', [''vif'',
[''backend'', 0], [''script'',
''vif-bridge''], [''mac'',
''00:16:3e:73:16:1d'']]], [''device'',
[''vbd'',
[''backend'', 0], [''dev'',
''hda1:disk''], [''uname'',
''file:/home/xen/domains/xen-etch/disk.img''],
[''mode'', ''w'']]],
[''device'',
[''vbd'', [''backend'', 0],
[''dev'', ''hda2:disk''],
[''uname'',
''file:/home/xen/domains/xen-etch/swap.img''],
[''mode'', ''w'']]], [''state'',
''----c-''], [''shutdown_reason'',
''crash''], [''cpu_time'', 0.14183262799999999],
[''online_vcpus'', 1], [''up_time'',
''1.65827989578''], [''start_time'',
''1219925932.43''], [''store_mfn'', 827716],
[''console_mfn'', 827715]])
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
parseConfig: config is [''domain'', [''domid'',
19], [''uuid'',
''3bc50a87-72ab-d4ab-e3d5-4bfded386524''],
[''vcpus'', 1], [''vcpu_avail'', 1],
[''cpu_weight'', 1.0], [''memory'', 128],
[''shadow_memory'', 0], [''maxmem'', 128],
[''features'', ''''], [''name'',
''xen-etch''], [''on_poweroff'',
''destroy''],
[''on_reboot'', ''restart''],
[''on_crash'', ''restart''],
[''image'', [''linux'',
[''kernel'',
''/boot/vmlinuz-2.6.18-6-xen-686''], [''ip'',
'':1.2.3.4::::eth0:dhcp''],
[''root'', ''/dev/hda1 ro'']]],
[''device'', [''vif'',
[''backend'', 0], [''script'',
''vif-bridge''], [''mac'',
''00:16:3e:73:16:1d'']]], [''device'',
[''vbd'',
[''backend'', 0], [''dev'',
''hda1:disk''], [''uname'',
''file:/home/xen/domains/xen-etch/disk.img''],
[''mode'', ''w'']]],
[''device'',
[''vbd'', [''backend'', 0],
[''dev'', ''hda2:disk''],
[''uname'',
''file:/home/xen/domains/xen-etch/swap.img''],
[''mode'', ''w'']]], [''state'',
''----c-''], [''shutdown_reason'',
''crash''], [''cpu_time'', 0.14183262799999999],
[''online_vcpus'', 1], [''up_time'',
''1.65827989578''], [''start_time'',
''1219925932.43''], [''store_mfn'', 827716],
[''console_mfn'', 827715]]
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
parseConfig: result is {''shadow_memory'': 0,
''uuid'':
''3bc50a87-72ab-d4ab-e3d5-4bfded386524'',
''on_crash'': ''restart'',
''on_reboot'':
''restart'', ''localtime'': None,
''image'': [''linux'',
[''kernel'',
''/boot/vmlinuz-2.6.18-6-xen-686''], [''ip'',
'':1.2.3.4::::eth0:dhcp''], [''root'',
''/dev/hda1 ro'']], ''on_poweroff'':
''destroy'', ''bootloader_args'': None,
''cpus'':
None, ''name'': ''xen-etch'',
''backend'': [], ''vcpus'': 1,
''cpu_weight'': 1.0,
''features'': '''',
''vcpu_avail'': 1, ''memory'': 128,
''device'': [(''vif'', [''vif'',
[''backend'', 0], [''script'',
''vif-bridge''], [''mac'',
''00:16:3e:73:16:1d'']]),
(''vbd'', [''vbd'',
[''backend'', 0], [''dev'',
''hda1:disk''], [''uname'',
''file:/home/xen/domains/xen-etch/disk.img''],
[''mode'', ''w'']]), (''vbd'',
[''vbd'', [''backend'', 0],
[''dev'', ''hda2:disk''],
[''uname'',
''file:/home/xen/domains/xen-etch/swap.img''],
[''mode'', ''w'']])],
''bootloader'':
None, ''cpu'': None, ''maxmem'': 128}
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.construct: None
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.initDomain: 20 1.0
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) Balloon: 93360 KiB
free; 38252 to scrub; need 131072; retries: 20.
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) Balloon: waiting on
scrubbing
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) Balloon: 131812 KiB
free; need 131072; done.
[2008-08-28 14:18:54 xend 3289] INFO (__init__:1072) buildDomain os=linux
dom=20 vcpus=1
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) dom            = 20
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) image         
/boot/vmlinuz-2.6.18-6-xen-686
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) store_evtchn   = 1
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) console_evtchn = 2
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) cmdline       
ip=:1.2.3.4::::eth0:dhcp root=/dev/hda1 ro
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) ramdisk        [2008-08-28
14:18:54 xend 3289] DEBUG (__init__:1072) vcpus          = 1
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) features       [2008-08-28
14:18:54 xend 3289] DEBUG (__init__:1072) DevController: writing
{''backend-id'': ''0'', ''mac'':
''00:16:3e:73:16:1d'', ''handle'':
''0'', ''state'': ''1'',
''backend'':
''/local/domain/0/backend/vif/20/0''} to
/local/domain/20/device/vif/0.
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) DevController: writing
{''domain'': ''xen-etch'',
''handle'': ''0'', ''script'':
''/etc/xen/scripts/vif-bridge'', ''state'':
''1'', ''frontend'':
''/local/domain/20/device/vif/0'', ''mac'':
''00:16:3e:73:16:1d'', ''online'':
''1'',
''frontend-id'': ''20''} to
/local/domain/0/backend/vif/20/0.
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) exception looking up
device number for hda1: [Errno 2] No such file or directory:
''/dev/hda1''
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) DevController: writing
{''backend-id'': ''0'',
''virtual-device'': ''769'',
''device-type'': ''disk'',
''state'':
''1'', ''backend'':
''/local/domain/0/backend/vbd/20/769''} to
/local/domain/20/device/vbd/769.
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) DevController: writing
{''domain'': ''xen-etch'',
''frontend'':
''/local/domain/20/device/vbd/769'', ''dev'':
''hda1'', ''state'': ''1'',
''params'':
''/home/xen/domains/xen-etch/disk.img'',
''mode'': ''w'', ''online'':
''1'', ''frontend-id'': ''20'',
''type'': ''file''} to
/local/domain/0/backend/vbd/20/769.
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) exception looking up
device number for hda2: [Errno 2] No such file or directory:
''/dev/hda2''
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) DevController: writing
{''backend-id'': ''0'',
''virtual-device'': ''770'',
''device-type'': ''disk'',
''state'':
''1'', ''backend'':
''/local/domain/0/backend/vbd/20/770''} to
/local/domain/20/device/vbd/770.
[2008-08-28 14:18:54 xend 3289] DEBUG (__init__:1072) DevController: writing
{''domain'': ''xen-etch'',
''frontend'':
''/local/domain/20/device/vbd/770'', ''dev'':
''hda2'', ''state'': ''1'',
''params'':
''/home/xen/domains/xen-etch/swap.img'',
''mode'': ''w'', ''online'':
''1'', ''frontend-id'': ''20'',
''type'': ''file''} to
/local/domain/0/backend/vbd/20/770.
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] DEBUG (__init__:1072) Storing
VM details: {''shadow_memory'': ''0'',
''uuid'':
''3bc50a87-72ab-d4ab-e3d5-4bfded386524'',
''on_reboot'': ''restart'',
''start_time'': ''1219925934.3'',
''on_poweroff'': ''destroy'',
''name'': ''xen-etch'',
''vcpus'': ''1'',
''vcpu_avail'': ''1'',
''memory'': ''128'',
''on_crash'': ''restart'',
''image'': "(linux (kernel /boot/vmlinuz-2.6.18-6-xen-686)
(ip
:1.2.3.4::::eth0:dhcp)
(root ''/dev/hda1 ro''))", ''maxmem'':
''128''}
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] DEBUG (__init__:1072) Storing
domain details: {''console/ring-ref'':
''830885'', ''console/port'':
''2'', ''name'':
''xen-etch'', ''console/limit'':
''1048576'', ''vm'':
''/vm/3bc50a87-72ab-d4ab-e3d5-4bfded386524'',
''domid'': ''20'',
''cpu/0/availability'': ''online'',
''memory/target'': ''131072'',
''store/ring-ref'':
''830886'', ''store/port'':
''1''}
[2008-08-28 14:18:54 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.handleShutdownWatch
[2008-08-28 14:18:56 xend.XendDomainInfo 3289] WARNING (__init__:1072)
Domain has crashed: name=xen-etch id=20.
[2008-08-28 14:18:56 xend.XendDomainInfo 3289] ERROR (__init__:1072) VM
xen-etch restarting too fast (2.815582 seconds since the last restart).
Refusing to restart to avoid loops.
[2008-08-28 14:18:56 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.destroy: domid=20
[2008-08-28 14:18:56 xend.XendDomainInfo 3289] DEBUG (__init__:1072)
XendDomainInfo.destroyDomain(20)

-- End

Can someone please help me get this sorted out? I just seem to be swatting
flies at the moment.

Thanks,
Mike


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Mike Raath

2008-Aug-29 07:44 UTC

head link

[Xen-users] Re: exception looking up device number for hda1: [Errno 2] No such file or directory: ''/dev/hda1''

Just realised that I didn''t copy in the xen-tools config. Once again -
please help, someone!

Here''s the xen-tools:

-- Start
dir = /home/xen
gateway   = 192.168.0.1
netmask   = 255.255.255.0
passwd = 1
kernel = /boot/vmlinuz-2.6.18-6-xen-686
mirror = http://debian.mirror.ac.za/debian/
-- End

Thanks


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Xen users - Aug 2008 - exception looking up device number for hda1: [Errno 2] No such file or directory: ''/dev/hda1''

[Xen-users] exception looking up device number for hda1: [Errno 2] No such file or directory: ''/dev/hda1''

[Xen-users] Re: exception looking up device number for hda1: [Errno 2] No such file or directory: ''/dev/hda1''