thr3ads.net - Xen users - [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2) [Jul 2011]

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Boris Derzhavets

2011-Jul-17 17:15 UTC

[Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

root@boris-P5Q-E:/mnt/usr/tmp# losetup -f ubuntu11.04.iso
root@boris-P5Q-E:/mnt/usr/tmp# losetup -a
/dev/loop0: [0809]:406494 (/mnt/usr/tmp/ubuntu11.04.iso)


root@boris-P5Q-E:~/vms/natty# cat natty.hvm
name = "NattyHVM"
builder = "hvm"
memory = "2048"
disk = [''phy:/dev/sda5,hda,w'',
''phy:/dev/loop0,hdc:cdrom,r'']
vif = [ ''type=ioemu,bridge=br0'' ]
device_model = "/usr/lib/xen-4.1/bin/qemu-dm"
kernel = "/usr/lib/xen-4.1/boot/hvmloader"
vnc=1
boot="d"
usb=1
usbdevice="tablet"
serial = "pty" # enable serial console
on_reboot = ''restart''
on_crash = ''restart''




root@boris-P5Q-E:~/vms/natty# xl create natty.hvm
Parsing config file natty.hvm
xc: info: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->000000000017b150
  TOTAL:         0000000000000000->000000007f800000
  ENTRY ADDRESS: 0000000000101580
xc: info: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000003fb
  1GB PAGES: 0x0000000000000000
libxl: error: libxl_device.c:476:libxl__wait_for_device_model Device Model not
ready
xl: fatal error: libxl_create.c:535, rc=-1: libxl__confirm_device_model_startup



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Stefano Stabellini

2011-Jul-18 11:40 UTC

head link

[Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

On Sun, 17 Jul 2011, Boris Derzhavets wrote:> root@boris-P5Q-E:/mnt/usr/tmp# losetup -f ubuntu11.04.iso
> root@boris-P5Q-E:/mnt/usr/tmp# losetup -a
> /dev/loop0: [0809]:406494 (/mnt/usr/tmp/ubuntu11.04.iso)
> 
> 
> root@boris-P5Q-E:~/vms/natty# cat natty.hvm
> name = "NattyHVM"
> builder = "hvm"
> memory = "2048"
> disk = [''phy:/dev/sda5,hda,w'',
''phy:/dev/loop0,hdc:cdrom,r'']
> vif = [ ''type=ioemu,bridge=br0'' ]
> device_model = "/usr/lib/xen-4.1/bin/qemu-dm"
> kernel = "/usr/lib/xen-4.1/boot/hvmloader"
> vnc=1
> boot="d"
> usb=1
> usbdevice="tablet"
> serial = "pty" # enable serial console
> on_reboot = ''restart''
> on_crash = ''restart''
> 
> 
> 
> 
> root@boris-P5Q-E:~/vms/natty# xl create natty.hvm
> Parsing config file natty.hvm
> xc: info: VIRTUAL MEMORY ARRANGEMENT:
>   Loader:        0000000000100000->000000000017b150
>   TOTAL:         0000000000000000->000000007f800000
>   ENTRY ADDRESS: 0000000000101580
> xc: info: PHYSICAL MEMORY ALLOCATION:
>   4KB PAGES: 0x0000000000000200
>   2MB PAGES: 0x00000000000003fb
>   1GB PAGES: 0x0000000000000000
> libxl: error: libxl_device.c:476:libxl__wait_for_device_model Device Model
not ready
> xl: fatal error: libxl_create.c:535, rc=-1:
libxl__confirm_device_model_startup 
qemu is failing to start.
Is there anything in /var/log/xen/qemu-dm-NattyHVM.log ?
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Boris Derzhavets

2011-Jul-18 12:31 UTC

head link

Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

domid: 1
-videoram option does not work with cirrus vga device model. Videoram set to 4M.
Using file /dev/sda5 in read-write mode
Using file /dev/loop0 in read-only mode
Watching /local/domain/0/device-model/1/logdirty/cmd
Watching /local/domain/0/device-model/1/command
Watching /local/domain/1/cpu
char device redirected to /dev/pts/2
qemu_map_cache_init nr_buckets = 10000 size 4194304
shared page at pfn feffd
buffered io page at pfn feffb
Guest uuid = 4de22a31-1735-4d06-be4d-3887eba949ee
populating video RAM at ff000000
mapping video RAM from ff000000
Register xen platform.
Done register platform.
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
xs_read(/local/domain/0/device-model/1/xen_extended_power_mgmt): read error
Could not read keymap file: ''/usr/share/qemu/keymaps/en-us''

Boris

--- On Mon, 7/18/11, Stefano Stabellini <stefano.stabellini@eu.citrix.com>
wrote:

From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel
3.0.0-5-generic) Ubuntu 11.10 (alpha 2)
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: "xen-devel@lists.xensource.com"
<xen-devel@lists.xensource.com>, "xen-users@lists.xensource.com"
<xen-users@lists.xensource.com>
Date: Monday, July 18, 2011, 7:40 AM

On Sun, 17 Jul 2011, Boris Derzhavets wrote:> root@boris-P5Q-E:/mnt/usr/tmp# losetup -f ubuntu11.04.iso
> root@boris-P5Q-E:/mnt/usr/tmp# losetup -a
> /dev/loop0: [0809]:406494 (/mnt/usr/tmp/ubuntu11.04.iso)
> 
> 
> root@boris-P5Q-E:~/vms/natty# cat natty.hvm
> name = "NattyHVM"
> builder = "hvm"
> memory = "2048"
> disk = [''phy:/dev/sda5,hda,w'',
''phy:/dev/loop0,hdc:cdrom,r'']
> vif = [ ''type=ioemu,bridge=br0'' ]
> device_model = "/usr/lib/xen-4.1/bin/qemu-dm"
> kernel = "/usr/lib/xen-4.1/boot/hvmloader"
> vnc=1
> boot="d"
> usb=1
> usbdevice="tablet"
> serial = "pty" # enable serial console
> on_reboot = ''restart''
> on_crash = ''restart''
> 
> 
> 
> 
> root@boris-P5Q-E:~/vms/natty# xl create natty.hvm
> Parsing config file natty.hvm
> xc: info: VIRTUAL MEMORY ARRANGEMENT:
>   Loader:        0000000000100000->000000000017b150
>   TOTAL:         0000000000000000->000000007f800000
>   ENTRY ADDRESS: 0000000000101580
> xc: info: PHYSICAL MEMORY ALLOCATION:
>   4KB PAGES: 0x0000000000000200
>   2MB PAGES: 0x00000000000003fb
>   1GB PAGES: 0x0000000000000000
> libxl: error: libxl_device.c:476:libxl__wait_for_device_model Device Model
not ready
> xl: fatal error: libxl_create.c:535, rc=-1:
libxl__confirm_device_model_startup 
qemu is failing to start.
Is there anything in /var/log/xen/qemu-dm-NattyHVM.log ?
-----Inline Attachment Follows-----

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Stefano Stabellini

2011-Jul-18 12:39 UTC

head link

Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

On Mon, 18 Jul 2011, Boris Derzhavets wrote:> domid: 1
> -videoram option does not work with cirrus vga device model. Videoram set
to 4M.
> Using file /dev/sda5 in read-write mode
> Using file /dev/loop0 in read-only mode
> Watching /local/domain/0/device-model/1/logdirty/cmd
> Watching /local/domain/0/device-model/1/command
> Watching /local/domain/1/cpu
> char device redirected to /dev/pts/2
> qemu_map_cache_init nr_buckets = 10000 size 4194304
> shared page at pfn feffd
> buffered io page at pfn feffb
> Guest uuid = 4de22a31-1735-4d06-be4d-3887eba949ee
> populating video RAM at ff000000
> mapping video RAM from ff000000
> Register xen platform.
> Done register platform.
> platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw
state.
> xs_read(/local/domain/0/device-model/1/xen_extended_power_mgmt): read error
> Could not read keymap file:
''/usr/share/qemu/keymaps/en-us''
> 
as you can see from the last line of the logs, you are missing the
keymap files (see keymaps directory under qemu-xen-4.1-testing).


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Boris Derzhavets

2011-Jul-18 13:41 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

Keymaps installed

Now:

root@boris-P5Q-E:~/vms/natty# xl create f14.hvm
Parsing config file f14.hvm
xc: info: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->000000000017b150
  TOTAL:         0000000000000000->000000007f800000
  ENTRY ADDRESS: 0000000000101580
xc: info: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000003fb
  1GB PAGES: 0x0000000000000000
Daemon running with PID 32668
root@boris-P5Q-E:~/vms/natty# vncviewer localhost:0

VNC Viewer Free Edition 4.1.1 for X - built Apr  9 2010 18:41:55
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.

Mon Jul 18 17:36:33 2011
 main:        unable to connect to host: Connection refused (111)

root@boris-P5Q-E:/var/log/xen# cat qemu-dm-F14HVM.log
domid: 236
-videoram option does not work with cirrus vga device model. Videoram set to 4M.
Using file /dev/sda5 in read-write mode
Using file /dev/loop0 in read-only mode
Watching /local/domain/0/device-model/236/logdirty/cmd
Watching /local/domain/0/device-model/236/command
Watching /local/domain/236/cpu
char device redirected to /dev/pts/3
qemu_map_cache_init nr_buckets = 10000 size 4194304
shared page at pfn feffd
buffered io page at pfn feffb
Guest uuid = b5a57be5-1097-4021-b3a7-56133c229c16
populating video RAM at ff000000
mapping video RAM from ff000000
Register xen platform.
Done register platform.
platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw state.
xs_read(/local/domain/0/device-model/236/xen_extended_power_mgmt): read error
xs_read(): vncpasswd get error.
/vm/b5a57be5-1097-4021-b3a7-56133c229c16/vncpasswd.
medium change watch on `hdc'' (index: 1): /dev/loop0
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
Log-dirty: no command yet.
vcpu-set: watch node error.
xs_read(/local/domain/236/log-throttling): read error
qemu: ignoring not-understood drive `/local/domain/236/log-throttling''
medium change watch on `/local/domain/236/log-throttling'' - unknown
device, ignored

Boris



--- On Mon, 7/18/11, Stefano Stabellini <stefano.stabellini@eu.citrix.com>
wrote:

From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 (
kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: "xen-devel@lists.xensource.com"
<xen-devel@lists.xensource.com>, "xen-users@lists.xensource.com"
<xen-users@lists.xensource.com>, "Stefano Stabellini"
<Stefano.Stabellini@eu.citrix.com>
Date: Monday, July 18, 2011, 8:39 AM

On Mon, 18 Jul 2011, Boris Derzhavets wrote:> domid: 1
> -videoram option does not work with cirrus vga device model. Videoram set
to 4M.
> Using file /dev/sda5 in read-write mode
> Using file /dev/loop0 in read-only mode
> Watching /local/domain/0/device-model/1/logdirty/cmd
> Watching /local/domain/0/device-model/1/command
> Watching /local/domain/1/cpu
> char device redirected to /dev/pts/2
> qemu_map_cache_init nr_buckets = 10000 size 4194304
> shared page at pfn feffd
> buffered io page at pfn feffb
> Guest uuid = 4de22a31-1735-4d06-be4d-3887eba949ee
> populating video RAM at ff000000
> mapping video RAM from ff000000
> Register xen platform.
> Done register platform.
> platform_fixed_ioport: changed ro/rw state of ROM memory area. now is rw
state.
> xs_read(/local/domain/0/device-model/1/xen_extended_power_mgmt): read error
> Could not read keymap file:
''/usr/share/qemu/keymaps/en-us''
> 
as you can see from the last line of the logs, you are missing the
keymap files (see keymaps directory under qemu-xen-4.1-testing).


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Stefano Stabellini

2011-Jul-18 16:26 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

On Mon, 18 Jul 2011, Boris Derzhavets wrote:> Keymaps installed
> 
> Now:
> 
> root@boris-P5Q-E:~/vms/natty# xl create f14.hvm
> Parsing config file f14.hvm
> xc: info: VIRTUAL MEMORY ARRANGEMENT:
>   Loader:        0000000000100000->000000000017b150
>   TOTAL:         0000000000000000->000000007f800000
>   ENTRY ADDRESS: 0000000000101580
> xc: info: PHYSICAL MEMORY ALLOCATION:
>   4KB PAGES: 0x0000000000000200
>   2MB PAGES: 0x00000000000003fb
>   1GB PAGES: 0x0000000000000000
> Daemon running with PID 32668
> root@boris-P5Q-E:~/vms/natty# vncviewer localhost:0
> 
> VNC Viewer Free Edition 4.1.1 for X - built Apr  9 2010 18:41:55
> Copyright (C) 2002-2005 RealVNC Ltd.
> See http://www.realvnc.com for information on VNC.
> 
> Mon Jul 18 17:36:33 2011
>  main:        unable to connect to host: Connection refused (111)
> 
> root@boris-P5Q-E:/var/log/xen# cat qemu-dm-F14HVM.log
There aren''t any error in the qemu logs.

Can you please make sure you have:

vncdisplay=0

in the f14.hvm config file?

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Boris Derzhavets

2011-Jul-18 16:33 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

Here it is

root@boris-P5Q-E:~/vms/natty# cat f14.hvm
name = "HVM14"
builder = "hvm"
memory = "2048"
disk = [''phy:/dev/sda5,hda,w'',
''phy:/dev/loop0,hdc:cdrom,r'']
vif = [ ''type=ioemu,bridge=br0'' ]
device_model = "/usr/lib/xen-4.1/bin/qemu-dm"
kernel = "/usr/lib/xen-4.1/boot/hvmloader"
vnc=1
vncdisplay=0
boot="d"
usb=1
usbdevice="tablet"
serial = "pty" # enable serial console
on_reboot = ''restart''
on_crash = ''restart''

Boris

--- On Mon, 7/18/11, Stefano Stabellini <stefano.stabellini@eu.citrix.com>
wrote:

From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 (
kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: "Stefano Stabellini" <Stefano.Stabellini@eu.citrix.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
"xen-users@lists.xensource.com" <xen-users@lists.xensource.com>
Date: Monday, July 18, 2011, 12:26 PM

On Mon, 18 Jul 2011, Boris Derzhavets wrote:> Keymaps installed
> 
> Now:
> 
> root@boris-P5Q-E:~/vms/natty# xl create f14.hvm
> Parsing config file f14.hvm
> xc: info: VIRTUAL MEMORY ARRANGEMENT:
>   Loader:        0000000000100000->000000000017b150
>   TOTAL:         0000000000000000->000000007f800000
>   ENTRY ADDRESS: 0000000000101580
> xc: info: PHYSICAL MEMORY ALLOCATION:
>   4KB PAGES: 0x0000000000000200
>   2MB PAGES: 0x00000000000003fb
>   1GB PAGES: 0x0000000000000000
> Daemon running with PID 32668
> root@boris-P5Q-E:~/vms/natty# vncviewer localhost:0
> 
> VNC Viewer Free Edition 4.1.1 for X - built Apr  9 2010 18:41:55
> Copyright (C) 2002-2005 RealVNC Ltd.
> See http://www.realvnc.com for information on VNC.
> 
> Mon Jul 18 17:36:33 2011
>  main:        unable to connect to host: Connection refused (111)
> 
> root@boris-P5Q-E:/var/log/xen# cat qemu-dm-F14HVM.log
There aren''t any error in the qemu logs.

Can you please make sure you have:

vncdisplay=0

in the f14.hvm config file?


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Konrad Rzeszutek Wilk

2011-Jul-18 16:51 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Fedora Core 14 (HVM) - starts, but can''t connect to VNC server.

On Mon, Jul 18, 2011 at 09:33:10AM -0700, Boris Derzhavets
wrote:> Here it is
> 
> root@boris-P5Q-E:~/vms/natty# cat f14.hvm
> name = "HVM14"
> builder = "hvm"
> memory = "2048"
> disk = [''phy:/dev/sda5,hda,w'',
''phy:/dev/loop0,hdc:cdrom,r'']
> vif = [ ''type=ioemu,bridge=br0'' ]
> device_model = "/usr/lib/xen-4.1/bin/qemu-dm"
> kernel = "/usr/lib/xen-4.1/boot/hvmloader"
> vnc=1
> vncdisplay=0
> boot="d"
> usb=1
> usbdevice="tablet"
> serial = "pty" # enable serial console
> on_reboot = ''restart''
> on_crash = ''restart''
And you did allow your firewall to see the VNC port? Did you see
if netstat -anp lists the qemu listening on your localhost?

What did you see if you connected to the terminal? ''xl console
HVM14'' ?

BTW, this is more a xen-users type question that xen-devel, so I am removing
the CC xen-devel on this.

And also fixing your subject.

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Stefano Stabellini

2011-Jul-18 17:13 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

On Mon, 18 Jul 2011, Boris Derzhavets wrote:> Here it is
> 
> root@boris-P5Q-E:~/vms/natty# cat f14.hvm
> name = "HVM14"
> builder = "hvm"
> memory = "2048"
> disk = [''phy:/dev/sda5,hda,w'',
''phy:/dev/loop0,hdc:cdrom,r'']
> vif = [ ''type=ioemu,bridge=br0'' ]
> device_model = "/usr/lib/xen-4.1/bin/qemu-dm"
> kernel = "/usr/lib/xen-4.1/boot/hvmloader"
> vnc=1
> vncdisplay=0
> boot="d"
> usb=1
> usbdevice="tablet"
> serial = "pty" # enable serial console
> on_reboot = ''restart''
> on_crash = ''restart''
It looks correct, I think it should work.
Are you still having the problem?
Do you have any errors on the Xen serial (xl dmesg)?

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Boris Derzhavets

2011-Jul-18 17:41 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Fedora Core 14 (HVM) - starts, but can''t connect to VNC server.

Firewall is disabled  on Ubuntu 11.10 alpha 2 .  I can always connect to VFB
when
install PV DomU via same command. Right ? . Another question that VFB window
is not displayed properly at Xen4.1 Dom0 Ubuntu 11.10.

Same profile on the same box  works fine under Xen 4.2 Unstable. !!

I believe Xen 4.1 has a  bug . View also :-

http://www.gossamer-threads.com/lists/xen/users/213049?nohighlight=1#213049

regarding same issue with 4.1

Boris.

--- On Mon, 7/18/11, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> wrote:

From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 (
kernel 3.0.0-5-generic) Fedora Core 14 (HVM) - starts, but can''t
connect to VNC server.
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: xen-users@lists.xensource.com
Date: Monday, July 18, 2011, 12:51 PM

On Mon, Jul 18, 2011 at 09:33:10AM -0700, Boris Derzhavets
wrote:> Here it is
> 
> root@boris-P5Q-E:~/vms/natty# cat f14.hvm
> name = "HVM14"
> builder = "hvm"
> memory = "2048"
> disk = [''phy:/dev/sda5,hda,w'',
''phy:/dev/loop0,hdc:cdrom,r'']
> vif = [ ''type=ioemu,bridge=br0'' ]
> device_model = "/usr/lib/xen-4.1/bin/qemu-dm"
> kernel = "/usr/lib/xen-4.1/boot/hvmloader"
> vnc=1
> vncdisplay=0
> boot="d"
> usb=1
> usbdevice="tablet"
> serial = "pty" # enable serial console
> on_reboot = ''restart''
> on_crash = ''restart''
And you did allow your firewall to see the VNC port? Did you see
if netstat -anp lists the qemu listening on your localhost?

What did you see if you connected to the terminal? ''xl console
HVM14'' ?

BTW, this is more a xen-users type question that xen-devel, so I am removing
the CC xen-devel on this.

And also fixing your subject.

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Boris Derzhavets

2011-Jul-18 17:50 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

root@boris-P5Q-E:~# xl dmesg
(XEN) Xen version 4.1.0 (Ubuntu 4.1.0-3ubuntu4) (zulcss@ubuntu.com) (gcc version
4.6.1 (Ubuntu/Linaro 4.6.0-10ubuntu2) ) Sat Jun  4 19:41:05 UTC 2011
(XEN) Bootloader: GRUB 1.99-8ubuntu1
(XEN) Command line: placeholder
(XEN) Video information:
(XEN)  VGA is text mode 80x25, font 8x16
(XEN)  VBE/DDC methods: V2; EDID transfer time: 1 seconds
(XEN) Disc information:
(XEN)  Found 0 MBR signatures
(XEN)  Found 1 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN)  0000000000000000 - 000000000009cc00 (usable)
(XEN)  000000000009cc00 - 00000000000a0000 (reserved)
(XEN)  00000000000e4000 - 0000000000100000 (reserved)
(XEN)  0000000000100000 - 00000000cff70000 (usable)
(XEN)  00000000cff70000 - 00000000cff7e000 (ACPI data)
(XEN)  00000000cff7e000 - 00000000cffd0000 (ACPI NVS)
(XEN)  00000000cffd0000 - 00000000d0000000 (reserved)
(XEN)  00000000fee00000 - 00000000fee01000 (reserved)
(XEN)  00000000ffe00000 - 0000000100000000 (reserved)
(XEN)  0000000100000000 - 0000000230000000 (usable)
(XEN) ACPI: RSDP 000FB030, 0014 (r0 ACPIAM)
(XEN) ACPI: RSDT CFF70000, 0040 (r1 A_M_I_ OEMRSDT   7000809 MSFT       97)
(XEN) ACPI: FACP CFF70200, 0084 (r2 A_M_I_ OEMFACP   7000809 MSFT       97)
(XEN) ACPI: DSDT CFF70440, 963E (r1  A0986 A0986000        0 INTL 20060113)
(XEN) ACPI: FACS CFF7E000, 0040
(XEN) ACPI: APIC CFF70390, 006C (r1 A_M_I_ OEMAPIC   7000809 MSFT       97)
(XEN) ACPI: MCFG CFF70400, 003C (r1 A_M_I_ OEMMCFG   7000809 MSFT       97)
(XEN) ACPI: OEMB CFF7E040, 0081 (r1 A_M_I_ AMI_OEM   7000809 MSFT       97)
(XEN) ACPI: HPET CFF79A80, 0038 (r1 A_M_I_ OEMHPET   7000809 MSFT       97)
(XEN) ACPI: OSFR CFF79AC0, 00B0 (r1 A_M_I_ OEMOSFR   7000809 MSFT       97)
(XEN) ACPI: SSDT CFF7E5D0, 0A7C (r1 DpgPmm    CpuPm       12 INTL 20060113)
(XEN) System RAM: 8191MB (8387632kB)
(XEN) Domain heap initialised
(XEN) Processor #0 7:7 APIC version 20
(XEN) Processor #1 7:7 APIC version 20
(XEN) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23
(XEN) Enabling APIC mode:  Flat.  Using 1 I/O APICs
(XEN) Table is not found!
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Detected 2999.757 MHz processor.
(XEN) Initing memory sharing.
(XEN) I/O virtualisation disabled
(XEN) ENABLING IO-APIC IRQs
(XEN)  -> Using new ACK method
(XEN) Platform timer is 14.318MHz HPET
(XEN) Allocated console ring of 16 KiB.
(XEN) VMX: Supported advanced features:
(XEN)  - APIC MMIO access virtualisation
(XEN)  - APIC TPR shadow
(XEN)  - Virtual NMI
(XEN)  - MSR direct-access bitmap
(XEN) HVM: ASIDs disabled.
(XEN) HVM: VMX enabled
(XEN) Brought up 2 CPUs
(XEN) *** LOADING DOMAIN 0 ***
(XEN)  Xen  kernel: 64-bit, lsb, compat32
(XEN)  Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x1e43000
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN)  Dom0 alloc.:   0000000220000000->0000000224000000 (2014127 pages to be
allocated)
(XEN)  Init. ramdisk: 000000022db80000->000000022ffffe00
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN)  Loaded kernel: ffffffff81000000->ffffffff81e43000
(XEN)  Init. ramdisk: ffffffff81e43000->ffffffff842c2e00
(XEN)  Phys-Mach map: ffffffff842c3000->ffffffff85253178
(XEN)  Start info:    ffffffff85254000->ffffffff852544b4
(XEN)  Page tables:   ffffffff85255000->ffffffff85282000
(XEN)  Boot stack:    ffffffff85282000->ffffffff85283000
(XEN)  TOTAL:         ffffffff80000000->ffffffff85400000
(XEN)  ENTRY ADDRESS: ffffffff81ad0200
(XEN) Dom0 has maximum 2 VCPUs
(XEN) Scrubbing Free RAM: .done.
(XEN) Xen trace buffers: disabled
(XEN) Std. Loglevel: Errors and warnings
(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type ''CTRL-a'' three times
to switch input to Xen)
(XEN) Freed 228kB init memory.


It doesn''t work 

root@boris-P5Q-E:~/vms/natty# xl create f14.hvm
Parsing config file f14.hvm
xc: info: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->000000000017b150
  TOTAL:         0000000000000000->000000007f800000
  ENTRY ADDRESS: 0000000000101580
xc: info: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000003fb
  1GB PAGES: 0x0000000000000000
Daemon running with PID 3200
root@boris-P5Q-E:~/vms/natty# vncviewer localhost:0

VNC Viewer Free Edition 4.1.1 for X - built Apr  9 2010 18:41:55
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.

Mon Jul 18 21:48:31 2011
 main:        unable to connect to host: Connection refused (111)

root@boris-P5Q-E:~/vms/natty# netstat -a | grep 590
unix  3      [ ]         STREAM     CONNECTED     12590    @/tmp/.X11-unix/X0
unix  3      [ ]         STREAM     CONNECTED     10590    


Boris

--- On Mon, 7/18/11, Stefano Stabellini <stefano.stabellini@eu.citrix.com>
wrote:

From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 (
kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: "xen-devel@lists.xensource.com"
<xen-devel@lists.xensource.com>, "xen-users@lists.xensource.com"
<xen-users@lists.xensource.com>, "Stefano Stabellini"
<Stefano.Stabellini@eu.citrix.com>
Date: Monday, July 18, 2011, 1:13 PM

On Mon, 18 Jul 2011, Boris Derzhavets wrote:> Here it is
> 
> root@boris-P5Q-E:~/vms/natty# cat f14.hvm
> name = "HVM14"
> builder = "hvm"
> memory = "2048"
> disk = [''phy:/dev/sda5,hda,w'',
''phy:/dev/loop0,hdc:cdrom,r'']
> vif = [ ''type=ioemu,bridge=br0'' ]
> device_model = "/usr/lib/xen-4.1/bin/qemu-dm"
> kernel = "/usr/lib/xen-4.1/boot/hvmloader"
> vnc=1
> vncdisplay=0
> boot="d"
> usb=1
> usbdevice="tablet"
> serial = "pty" # enable serial console
> on_reboot = ''restart''
> on_crash = ''restart''
It looks correct, I think it should work.
Are you still having the problem?
Do you have any errors on the Xen serial (xl dmesg)?

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Boris Derzhavets

2011-Jul-18 17:58 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Fedora Core 14 (HVM) - starts, but can''t connect to VNC server.

root@boris-P5Q-E:~/vms/natty# xl create f14.hvm
Parsing config file f14.hvm
xc: info: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->000000000017b150
  TOTAL:         0000000000000000->000000007f800000
  ENTRY ADDRESS: 0000000000101580
xc: info: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000003fb
  1GB PAGES: 0x0000000000000000
Daemon running with PID 8605

Looks strange :-


root@boris-P5Q-E:~/vms/natty# xm list
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0  6814     2     r-----    598.9
HVM14                                      251  2039     1     ------      0.0



root@boris-P5Q-E:~/vms/natty# netstat -anp | grep 590
unix  3      [ ]         STREAM     CONNECTED     12590    1127/X             
@/tmp/.X11-unix/X0
unix  3      [ ]         STREAM     CONNECTED     10590    1946/gnome-settings 


Nothing is listening  at 5900

Boris.


--- On Mon, 7/18/11, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> wrote:

From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 (
kernel 3.0.0-5-generic) Fedora Core 14 (HVM) - starts, but can''t
connect to VNC server.
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: xen-users@lists.xensource.com
Date: Monday, July 18, 2011, 12:51 PM

On Mon, Jul 18, 2011 at 09:33:10AM -0700, Boris Derzhavets
wrote:> Here it is
> 
> root@boris-P5Q-E:~/vms/natty# cat f14.hvm
> name = "HVM14"
> builder = "hvm"
> memory = "2048"
> disk = [''phy:/dev/sda5,hda,w'',
''phy:/dev/loop0,hdc:cdrom,r'']
> vif = [ ''type=ioemu,bridge=br0'' ]
> device_model = "/usr/lib/xen-4.1/bin/qemu-dm"
> kernel = "/usr/lib/xen-4.1/boot/hvmloader"
> vnc=1
> vncdisplay=0
> boot="d"
> usb=1
> usbdevice="tablet"
> serial = "pty" # enable serial console
> on_reboot = ''restart''
> on_crash = ''restart''
And you did allow your firewall to see the VNC port? Did you see
if netstat -anp lists the qemu listening on your localhost?

What did you see if you connected to the terminal? ''xl console
HVM14'' ?

BTW, this is more a xen-users type question that xen-devel, so I am removing
the CC xen-devel on this.

And also fixing your subject.


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Konrad Rzeszutek Wilk

2011-Jul-18 18:29 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Fedora Core 14 (HVM) - starts, but can''t connect to VNC server.

On Mon, Jul 18, 2011 at 10:41:08AM -0700, Boris Derzhavets
wrote:> Firewall is disabled  on Ubuntu 11.10 alpha 2 .  I can always connect to
VFB when
> install PV DomU via same command. Right ? . Another question that VFB
window
I believe the xl command expects you to use ''vfb'' option
instead of
the vnc and vncdisplay for 4.1

So:

vfb = [ ''vnc=1, vnclisten=0.0.0.0,vncunused=1'']
> is not displayed properly at Xen4.1 Dom0 Ubuntu 11.10.
> 
> Same profile on the same box  works fine under Xen 4.2 Unstable. !!
OOh, so you are using ''xl'' under 4.1 and not
''xm''? Well, that should
be no surprise. The ''xl'' command under 4.1 was in development
so
a lot of stuff simply did not work.

In short: If Xen-unstable or Xen 4.2 - use ''xl''. Else, use
''xm''.

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Boris Derzhavets

2011-Jul-18 19:22 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Fedora Core 14 (HVM) - starts, but can''t connect to VNC server.

> I believe the xl command expects you to use ''vfb'' option
instead of
> the vnc and vncdisplay for 4.1
I believe for HVM profile  :

vnc=1
vncdisplay=0

and HVM doesn''t start as i reported to Stefano at Xen 4.1 Dom0
(3.0.0-5-generic)
> So:
> vfb = [ ''vnc=1, vnclisten=0.0.0.0,vncunused=1'']
This option is for VFB definition PV DomU.   In particular at Xen 4.1 (
3.0.0-5-generic )
on Ubuntu 11.10 ( oneiric) 

1. It doesn''t provide only a part of VNC window with alive mouse cursor
in case F15 DomU
2. It provides VNC window with dead mouse cursor in case F14 DomU

It was also reported to Stefano in the same thread , when it was in xen-devel

Boris.

--- On Mon, 7/18/11, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> wrote:

From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 (
kernel 3.0.0-5-generic) Fedora Core 14 (HVM) - starts, but can''t
connect to VNC server.
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: xen-users@lists.xensource.com
Date: Monday, July 18, 2011, 2:29 PM

On Mon, Jul 18, 2011 at 10:41:08AM -0700, Boris Derzhavets
wrote:> Firewall is disabled  on Ubuntu 11.10 alpha 2 .  I can always connect to
VFB when
> install PV DomU via same command. Right ? . Another question that VFB
window
I believe the xl command expects you to use ''vfb'' option
instead of
the vnc and vncdisplay for 4.1

So:

vfb = [ ''vnc=1, vnclisten=0.0.0.0,vncunused=1'']
> is not displayed properly at Xen4.1 Dom0 Ubuntu 11.10.
> 
> Same profile on the same box  works fine under Xen 4.2 Unstable. !!
OOh, so you are using ''xl'' under 4.1 and not
''xm''? Well, that should
be no surprise. The ''xl'' command under 4.1 was in development
so
a lot of stuff simply did not work.

In short: If Xen-unstable or Xen 4.2 - use ''xl''. Else, use
''xm''.

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Stefano Stabellini

2011-Jul-19 10:48 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

On Mon, 18 Jul 2011, Boris Derzhavets wrote:> It doesn''t work
> 
> root@boris-P5Q-E:~/vms/natty# xl create f14.hvm
> Parsing config file f14.hvm
> xc: info: VIRTUAL MEMORY ARRANGEMENT:
>   Loader:        0000000000100000->000000000017b150
>   TOTAL:         0000000000000000->000000007f800000
>   ENTRY ADDRESS: 0000000000101580
> xc: info: PHYSICAL MEMORY ALLOCATION:
>   4KB PAGES: 0x0000000000000200
>   2MB PAGES: 0x00000000000003fb
>   1GB PAGES: 0x0000000000000000
> Daemon running with PID 3200
> root@boris-P5Q-E:~/vms/natty# vncviewer localhost:0
> 
> VNC Viewer Free Edition 4.1.1 for X - built Apr  9 2010 18:41:55
> Copyright (C) 2002-2005 RealVNC Ltd.
> See http://www.realvnc.com for information on VNC.
> 
> Mon Jul 18 21:48:31 2011
>  main:        unable to connect to host: Connection refused (111)
> 
> root@boris-P5Q-E:~/vms/natty# netstat -a | grep 590
> unix  3      [ ]         STREAM     CONNECTED     12590   
@/tmp/.X11-unix/X0
> unix  3      [ ]         STREAM     CONNECTED     10590   
Can you give it a try with SDL?
Set:

vnc=0
sdl=1

in your VM config file.

I hope you''ll be able to see at least the BIOS booting in the SDL
window, and maybe an error accessing the disks.
--8323329-1482019684-1311072509=:12963
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

--8323329-1482019684-1311072509=:12963--

Boris Derzhavets

2011-Jul-19 11:55 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

For SDL :

root@boris-P5Q-E:~/vms/natty# xm create f14.hvm
Using config file "./f14.hvm".
Error: Domain ''HVM14'' does not exist.

root@boris-P5Q-E:~/vms/natty# xl create f14.hvm
Parsing config file f14.hvm
xc: info: VIRTUAL MEMORY ARRANGEMENT:
  Loader:        0000000000100000->000000000017b150
  TOTAL:         0000000000000000->000000007f800000
  ENTRY ADDRESS: 0000000000101580
xc: info: PHYSICAL MEMORY ALLOCATION:
  4KB PAGES: 0x0000000000000200
  2MB PAGES: 0x00000000000003fb
  1GB PAGES: 0x0000000000000000
libxl: error: libxl_device.c:476:libxl__wait_for_device_model Device Model not
ready
xl: fatal error: libxl_create.c:535, rc=-1: libxl__confirm_device_model_startup


Boris

--- On Tue, 7/19/11, Stefano Stabellini <stefano.stabellini@eu.citrix.com>
wrote:

From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 (
kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: "xen-devel@lists.xensource.com"
<xen-devel@lists.xensource.com>, "xen-users@lists.xensource.com"
<xen-users@lists.xensource.com>, "Stefano Stabellini"
<Stefano.Stabellini@eu.citrix.com>
Date: Tuesday, July 19, 2011, 6:48 AM

On Mon, 18 Jul 2011, Boris Derzhavets wrote:> It doesn''t work
> 
> root@boris-P5Q-E:~/vms/natty# xl create f14.hvm
> Parsing config file f14.hvm
> xc: info: VIRTUAL MEMORY ARRANGEMENT:
>   Loader:        0000000000100000->000000000017b150
>   TOTAL:         0000000000000000->000000007f800000
>   ENTRY ADDRESS: 0000000000101580
> xc: info: PHYSICAL MEMORY ALLOCATION:
>   4KB PAGES: 0x0000000000000200
>   2MB PAGES: 0x00000000000003fb
>   1GB PAGES: 0x0000000000000000
> Daemon running with PID 3200
> root@boris-P5Q-E:~/vms/natty# vncviewer localhost:0
> 
> VNC Viewer Free Edition 4.1.1 for X - built Apr  9 2010 18:41:55
> Copyright (C) 2002-2005 RealVNC Ltd.
> See http://www.realvnc.com for information on VNC.
> 
> Mon Jul 18 21:48:31 2011
>  main:        unable to connect to host: Connection refused (111)
> 
> root@boris-P5Q-E:~/vms/natty# netstat -a | grep 590
> unix  3      [ ]         STREAM     CONNECTED     12590   
@/tmp/.X11-unix/X0
> unix  3      [ ]         STREAM     CONNECTED     10590   
Can you give it a try with SDL?
Set:

vnc=0
sdl=1

in your VM config file.

I hope you''ll be able to see at least the BIOS booting in the SDL
window, and maybe an error accessing the disks.
-----Inline Attachment Follows-----

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

Boris Derzhavets

2011-Jul-19 12:18 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 . How to backport HVM support ?

Stefano,

I believe that in Xen Unstable should be set of CS''s brought back HVM
support.
The question is - which ones ?

Boris.

--- On Tue, 7/19/11, Stefano Stabellini <stefano.stabellini@eu.citrix.com>
wrote:

From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Subject: Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 (
kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)
To: "Boris Derzhavets" <bderzhavets@yahoo.com>
Cc: "xen-devel@lists.xensource.com"
<xen-devel@lists.xensource.com>, "xen-users@lists.xensource.com"
<xen-users@lists.xensource.com>, "Stefano Stabellini"
<Stefano.Stabellini@eu.citrix.com>
Date: Tuesday, July 19, 2011, 6:48 AM

On Mon, 18 Jul 2011, Boris Derzhavets wrote:> It doesn''t work
> 
> root@boris-P5Q-E:~/vms/natty# xl create f14.hvm
> Parsing config file f14.hvm
> xc: info: VIRTUAL MEMORY ARRANGEMENT:
>   Loader:        0000000000100000->000000000017b150
>   TOTAL:         0000000000000000->000000007f800000
>   ENTRY ADDRESS: 0000000000101580
> xc: info: PHYSICAL MEMORY ALLOCATION:
>   4KB PAGES: 0x0000000000000200
>   2MB PAGES: 0x00000000000003fb
>   1GB PAGES: 0x0000000000000000
> Daemon running with PID 3200
> root@boris-P5Q-E:~/vms/natty# vncviewer localhost:0
> 
> VNC Viewer Free Edition 4.1.1 for X - built Apr  9 2010 18:41:55
> Copyright (C) 2002-2005 RealVNC Ltd.
> See http://www.realvnc.com for information on VNC.
> 
> Mon Jul 18 21:48:31 2011
>  main:        unable to connect to host: Connection refused (111)
> 
> root@boris-P5Q-E:~/vms/natty# netstat -a | grep 590
> unix  3      [ ]         STREAM     CONNECTED     12590   
@/tmp/.X11-unix/X0
> unix  3      [ ]         STREAM     CONNECTED     10590   
Can you give it a try with SDL?
Set:

vnc=0
sdl=1

in your VM config file.

I hope you''ll be able to see at least the BIOS booting in the SDL
window, and maybe an error accessing the disks.
-----Inline Attachment Follows-----

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel


_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Ian Campbell

2011-Jul-20 09:22 UTC

head link

Re: [Xen-users] Re: [Xen-devel] Failure to create HVM DomU at Xen 4.1 ( kernel 3.0.0-5-generic) Ubuntu 11.10 (alpha 2)

root@boris-P5Q-E:~/vms/natty# vncviewer localhost:0
        
        VNC Viewer Free Edition 4.1.1 for X - built Apr  9 2010 18:41:55
        Copyright (C) 2002-2005 RealVNC Ltd.
        See http://www.realvnc.com for information on VNC.
        
        Mon Jul 18 21:48:31 2011
         main:        unable to connect to host: Connection refused
        (111)
        
        root@boris-P5Q-E:~/vms/natty# netstat -a | grep 590
        unix  3      [ ]         STREAM     CONNECTED     12590
        @/tmp/.X11-unix/X0
        unix  3      [ ]         STREAM     CONNECTED     10590    
        
        
What does "ps aux | grep qemu" show as your qemu command line? Also
"netstat -a | grep qemu" might be interesting.

When I have an issue with qemu I often specify the device model in my
guest configuration as a script containing:
	echo $@ > /tmp/qemu-dm
	sleep 1h

Then immediately after running "xl create" I can examine /tmp/qemu-dm
and run the qemu by hand in the foreground, or under gdb etc. (there is
a timeout in xl waiting for qemu to announce itself so you need to be
reasonably prompt...)

Ian.



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