Fail to create disk.img

Fail to create disk.img

[Stephen Liu]

Hi folks,


Ubuntu 8.04 server amd64 - host - headless (w/o X packages)
Ubuntu 6.06 server amd64 - guest - headless (w/o X packages)
KVM


Previously I ran;


# qemu-img create -f qcow2 disk.img 10G

then

# kvm -hda disk.img -cdrom /dev/scd0 -m 512 -boot d

to create a working disk.img.  It works on the VM.


But I couldn't create direct on running;

# kvm -hda disk.img -cdrom /dev/scd0 -m 512 -boot d


must be in 2 steps.



Now I tried creating another disk.img but the above steps did not work.


# qemu-img create -f qcow2 ubuntu6.06_080805.img 10G
Formatting 'ubuntu6.06_080805.img', fmt=qcow2, size=10485760 kB


# kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d -smp 2
     =======================|  DirectFB 1.0.1  |=======================
          (c) 2001-2007  The DirectFB Organization (directfb.org)
          (c) 2000-2004  Convergence (integrated media) GmbH
        ------------------------------------------------------------

(*) DirectFB/Core: Single Application Core. (2008-04-08 15:15) 
(*) Direct/Memcpy: Using libc memcpy()
(!) Direct/Util: opening '/dev/fb0' and '/dev/fb/0' failed
    --> No such file or directory
(!) DirectFB/FBDev: Error opening framebuffer device!
(!) DirectFB/FBDev: Use 'fbdev' option or set FRAMEBUFFER environment
variable.
(!) DirectFB/Core: Could not initialize 'system' core!
    --> Initialization error!
Could not initialize SDL - exiting
* end *


without "-smp 2" still the same.


I don't know what mistake I have committed.  I didn't done anything on
the host except running apt-get update/upgrade.  Please advise.


TIA


B.R.
Stephen L

Send instant messages to your online friends http://uk.messenger.yahoo.com 

Re: Fail to create disk.img

[Ian Kirk]

Stephen Liu wrote:

> must be in 2 steps.

Correct, as far as I know you have to use qemu-img.

> Could not initialize SDL - exiting

Maybe this is your problem.

Re: Fail to create disk.img

[Uri Lublin]

Stephen Liu wrote:
> Hi folks,
> 
> 
> Ubuntu 8.04 server amd64 - host - headless (w/o X packages)
> Ubuntu 6.06 server amd64 - guest - headless (w/o X packages)
> KVM
> 
> 
> # qemu-img create -f qcow2 ubuntu6.06_080805.img 10G
> Formatting 'ubuntu6.06_080805.img', fmt=qcow2, size=10485760 kB
> 
> 
> # kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d -smp 2
>      =======================|  DirectFB 1.0.1  |=======================
>           (c) 2001-2007  The DirectFB Organization (directfb.org)
>           (c) 2000-2004  Convergence (integrated media) GmbH
>         ------------------------------------------------------------
> 
> (*) DirectFB/Core: Single Application Core. (2008-04-08 15:15) 
> (*) Direct/Memcpy: Using libc memcpy()
> (!) Direct/Util: opening '/dev/fb0' and '/dev/fb/0' failed
>     --> No such file or directory
> (!) DirectFB/FBDev: Error opening framebuffer device!
> (!) DirectFB/FBDev: Use 'fbdev' option or set FRAMEBUFFER environment
> variable.
> (!) DirectFB/Core: Could not initialize 'system' core!
>     --> Initialization error!
> Could not initialize SDL - exiting
> * end *
> 
> 
> without "-smp 2" still the same.

Does xterm work ?

Try adding "-vnc :9" and connect with a vnc viewer, or use xauth (or ssh -X) to 
set permissions to run with SDL.

Re: Fail to create disk.img

[Stephen Liu]

--- Uri Lublin <uri@il.qumranet.com> wrote:

> Stephen Liu wrote:

> > 
>> > # qemu-img create -f qcow2 ubuntu6.06_080805.img 10G
> > Formatting 'ubuntu6.06_080805.img', fmt=qcow2, size=10485760 kB
> > 
> > 
> > # kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d
> -smp 2
> >      =======================|  DirectFB 1.0.1 
> |=======================
> >           (c) 2001-2007  The DirectFB Organization (directfb.org)
> >           (c) 2000-2004  Convergence (integrated media) GmbH
> >        
> ------------------------------------------------------------
> > 
> > (*) DirectFB/Core: Single Application Core. (2008-04-08 15:15) 
> > (*) Direct/Memcpy: Using libc memcpy()
> > (!) Direct/Util: opening '/dev/fb0' and '/dev/fb/0' failed
> >     --> No such file or directory
> > (!) DirectFB/FBDev: Error opening framebuffer device!
> > (!) DirectFB/FBDev: Use 'fbdev' option or set FRAMEBUFFER
> environment
> > variable.
> > (!) DirectFB/Core: Could not initialize 'system' core!
> >     --> Initialization error!
> > Could not initialize SDL - exiting
> > * end *
> > 
> > 
> > without "-smp 2" still the same.
> 
> Does xterm work ?

Hi Uri,

Yes, it is working.  I'm configuring the server remotely.

 
> Try adding "-vnc :9" 

# kvm -hdb ubuntu6.06_20080805.img -cdrom /dev/scd0 -m 512 -boot d -smp
2 -vnc :9

It is hanging here,


> and connect with a vnc viewer, 

$ vncviewer 192.168.0.110:9

VNC Viewer Free Edition 4.1.1 for X - built Sep 10 2007 16:58:22
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.


The viewer did not start


$ vncviewer 192.168.0.110:9 1024x768

VNC Viewer Free Edition 4.1.1 for X - built Sep 10 2007 16:58:22
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.


Viewer started;

VNC Viewer: Information
unable to resolve host by name: Connection timed out (110)
[OK]

clicking [OK] the viewer closed.

Tue Aug  5 17:24:56 2008
 main:        unable to resolve host by name: Connection timed out
(110)
- end -


> or use xauth (or
> ssh -X) to 
> set permissions to run with SDL.

Please explain in detail how to do that?  TIA


B.R.
Stephen

Send instant messages to your online friends http://uk.messenger.yahoo.com 

Re: Fail to create disk.img

[Uri Lublin]

Stephen Liu wrote:
> --- Uri Lublin <uri@il.qumranet.com> wrote:
> 
>> Stephen Liu wrote:
> 
>>>> # qemu-img create -f qcow2 ubuntu6.06_080805.img 10G
>>> Formatting 'ubuntu6.06_080805.img', fmt=qcow2, size=10485760 kB
>>>
>>>
>>> # kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d
>> -smp 2
>>>      =======================|  DirectFB 1.0.1 
>> |=======================
>>>           (c) 2001-2007  The DirectFB Organization (directfb.org)
>>>           (c) 2000-2004  Convergence (integrated media) GmbH
>>>        
>> ------------------------------------------------------------
>>> (*) DirectFB/Core: Single Application Core. (2008-04-08 15:15) 
>>> (*) Direct/Memcpy: Using libc memcpy()
>>> (!) Direct/Util: opening '/dev/fb0' and '/dev/fb/0' failed
>>>     --> No such file or directory
>>> (!) DirectFB/FBDev: Error opening framebuffer device!
>>> (!) DirectFB/FBDev: Use 'fbdev' option or set FRAMEBUFFER
>> environment
>>> variable.
>>> (!) DirectFB/Core: Could not initialize 'system' core!
>>>     --> Initialization error!
>>> Could not initialize SDL - exiting
>>> * end *
>>>
>>>
>>> without "-smp 2" still the same.
>> Does xterm work ?
> 
> Yes, it is working.  I'm configuring the server remotely.
> 
>  
>> Try adding "-vnc :9" 
> 
> # kvm -hdb ubuntu6.06_20080805.img -cdrom /dev/scd0 -m 512 -boot d -smp
> 2 -vnc :9
> 
> It is hanging here,
> 
> 
>> and connect with a vnc viewer, 
> 
> $ vncviewer 192.168.0.110:9
> 
> VNC Viewer Free Edition 4.1.1 for X - built Sep 10 2007 16:58:22
> Copyright (C) 2002-2005 RealVNC Ltd.
> See http://www.realvnc.com for information on VNC.
> 
> 
> The viewer did not start
> 
> 
>> or use xauth (or
>> ssh -X) to 
>> set permissions to run with SDL.
> 
> Please explain in detail how to do that?  TIA
> 

I thought it might be something with X permissions, but it is not.

Re: Fail to create disk.img

[Soren Hansen]

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On Tue, Aug 05, 2008 at 04:57:29PM +0800, Stephen Liu wrote:
> # kvm -hda disk.img -cdrom /dev/scd0 -m 512 -boot d
> 
> to create a working disk.img.  It works on the VM.

No. We've been through all of this just a few days ago. If you don't
tell kvm differently, it will attempt to use SDL (which uses X). You
probably want to use -vnc <something>.

Please take a minute to look at documentation and to read error messages
before you start a thread here. There are *many* subscribers to this
list, most of whom are very busy people. When you post here, you're
taking time out of everyone's day to read your questions. Please keep
that in mind before posting.

-- 
Soren Hansen               | 
Virtualisation specialist  | Ubuntu Server Team
Canonical Ltd.             | http://www.ubuntu.com/

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Re: Fail to create disk.img

[Soren Hansen]

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On Tue, Aug 05, 2008 at 05:29:22PM +0800, Stephen Liu wrote:
>> Try adding "-vnc :9" 
> # kvm -hdb ubuntu6.06_20080805.img -cdrom /dev/scd0 -m 512 -boot d
> -smp 2 -vnc :9
> 
> It is hanging here,

You absolutely must be kidding.

It has only been 7 days since this was all explained to you once:

http://thread.gmane.org/gmane.comp.emulators.kvm.devel/20004

You've been told how to use kvm's built-in VNC server. You've been told
that it is not hanging; it is simply running in the background. Please
reread that thread, and think very thoroughly before you ask questions.
I find your behaviour quite rude.

>> or use xauth (or ssh -X) to set permissions to run with SDL.
> Please explain in detail how to do that?  TIA

Are you familiar with man? It will show you documentation for most
commands available on your linux system. For example "man ssh" will show
you the man page for ssh. On that page, you will see a bit of
explanation of what the "-X" option does. At the bottom of the man page,
you'll see references to other ssh related man page, which might explain
things in more detail. This might not explain everything, but at the
very least, please have the courtesy to read everything you can about
the subject before bothering everyone else with your questions, and then
be *very* specific about what you don't understand.

-- 
Soren Hansen               | 
Virtualisation specialist  | Ubuntu Server Team
Canonical Ltd.             | http://www.ubuntu.com/

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Re: Fail to create disk.img

[Uri Lublin]

Stephen Liu wrote:
> Hi folks,
> 
> 
> Ubuntu 8.04 server amd64 - host - headless (w/o X packages)
> Ubuntu 6.06 server amd64 - guest - headless (w/o X packages)
> KVM
> 
  > # qemu-img create -f qcow2 ubuntu6.06_080805.img 10G
> Formatting 'ubuntu6.06_080805.img', fmt=qcow2, size=10485760 kB
> 
> 
> # kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d -smp 2
>      =======================|  DirectFB 1.0.1  |=======================
>           (c) 2001-2007  The DirectFB Organization (directfb.org)
>           (c) 2000-2004  Convergence (integrated media) GmbH
>         ------------------------------------------------------------
> 
> (*) DirectFB/Core: Single Application Core. (2008-04-08 15:15) 
> (*) Direct/Memcpy: Using libc memcpy()
> (!) Direct/Util: opening '/dev/fb0' and '/dev/fb/0' failed
>     --> No such file or directory
> (!) DirectFB/FBDev: Error opening framebuffer device!
> (!) DirectFB/FBDev: Use 'fbdev' option or set FRAMEBUFFER environment
> variable.
> (!) DirectFB/Core: Could not initialize 'system' core!
>     --> Initialization error!
> Could not initialize SDL - exiting
> * end *
> 
> 
> without "-smp 2" still the same.
> 

Look at the thread below, does it help ?

http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg04447.html
http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg04449.html
http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg04451.html

Re: Fail to create disk.img

[Stephen Liu]

--- Uri Lublin <uri@il.qumranet.com> wrote:

- snip -
 
> Look at the thread below, does it help ?
> 
>
http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg04447.html
>
http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg04449.html
>
http://www.mail-archive.com/kvm-devel@lists.sourceforge.net/msg04451.html


Hi Uri and folks.


Thanks for your advice.


I found the cause.  It was iptables.  After flushing all rules, the
problem gone.


Xterm-1
# kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d -smp 2
-vnc :9
(starting)


Xterm-2
$ vncviewer 192.168.0.110:9

viewer popup and installation began.  After finish it reboots.


However on Xterm-1
it popup ;-

kvm_run: failed entry, reason 65535
kvm_run returned -8


Testing:-

Xterm-1
Ran
# kvm ubuntu6.06_080805.img -vnc :0
Starting


Xterm-2
$ vncviewer 192.168.0.110:0

viewer starts displaying;
.....
Booting the kernel
.....
Alert! /dev/hdb1 does not exist. Dropping to a shell!

BusyBox v1.01 (Debian 1:1.01-4ubuntu3) Built-in shell (ash)
Enter 'help' for a list of built-in commands.

/bin/sh: can't access tty: job control turned off
#
* end *


Any mistake committed?  Please advice.  TIA

Remark:  AMD dual core CPU


B.R.
Stephen

Send instant messages to your online friends http://uk.messenger.yahoo.com 

Re: Fail to create disk.img

[Soren Hansen]

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On Tue, Aug 05, 2008 at 06:37:09PM +0800, Stephen Liu wrote:
> # kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d -smp
> 2 -vnc :9 (starting)

Here, you're attaching your disk image to /dev/hdb.

> # kvm ubuntu6.06_080805.img -vnc :0

Here... not so much.

> viewer starts displaying;
> .....
> Booting the kernel
> .....
> Alert! /dev/hdb1 does not exist. Dropping to a shell!

Obviously, since what you called /dev/hdb during installation is now
/dev/hda.

-- 
Soren Hansen               | 
Virtualisation specialist  | Ubuntu Server Team
Canonical Ltd.             | http://www.ubuntu.com/

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Re: Fail to create disk.img (SOLVED)

[Stephen Liu]

--- Soren Hansen <soren@ubuntu.com> wrote:

> On Tue, Aug 05, 2008 at 06:37:09PM +0800, Stephen Liu wrote:
> > # kvm -hdb ubuntu6.06_080805.img -cdrom /dev/scd0 -m 512 -boot d
> -smp
> > 2 -vnc :9 (starting)
> 
> Here, you're attaching your disk image to /dev/hdb.
> 
> > # kvm ubuntu6.06_080805.img -vnc :0
> 
> Here... not so much.


Hi Soren,

I got it.  Thanks


Xterm-1
# kvm -hdb ubuntu6.06_080805.img -vnc :0
starting


Xterm-2
$ vncviewer 192.168.0.110:0

Viewer starts.  Also Ubuntu6.06 start to boot.  Finally I can login as
user as well as root.


In these couple days I made heavy googling and found many documents. 
Because I can't get the guest to ping website (it can update/upload
files on repo).  However the more I read more confuse I'm.


If creating the disk.img running;

$ sudo kvm -hda disk.img -cdrom ........

I can start the guest with;
$ kvm disk.img ip-address.....
(without -hda)


If creating the disk.img running;

$ sudo kvm -hdb disk.img -cdrom ......

I must run;
$ kvm -hdb disk.img ip-address.....
(must add -hdb)

I'm NOT very clear, WHY?


I'm following;
https://help.ubuntu.com/community/KVM#Creating%20a%20network%20bridge%20on%20the%20host

trying to sort out the problem on networking


On running
$ sudo kvm-bridge -m 512 -hdb disk.img -cdrom /dev/scd0 -boot d -smp 2
nohup: appending output to `nohup.out'

It always appends output to `nohup.out'

I'm still struggling.


B.R.
Stephen




> > viewer starts displaying;
> > .....
> > Booting the kernel
> > .....
> > Alert! /dev/hdb1 does not exist. Dropping to a shell!
> 
> Obviously, since what you called /dev/hdb during installation is now
> /dev/hda.


Send instant messages to your online friends http://uk.messenger.yahoo.com 

Re: Fail to create disk.img (SOLVED)

[Soren Hansen]

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On Tue, Aug 05, 2008 at 07:50:40PM +0800, Stephen Liu wrote:
> In these couple days I made heavy googling and found many documents.
> Because I can't get the guest to ping website (it can update/upload
> files on repo).  However the more I read more confuse I'm.
> 
> 
> If creating the disk.img running;
> 
> $ sudo kvm -hda disk.img -cdrom ........

> 
> I can start the guest with;
> $ kvm disk.img ip-address.....
> (without -hda)

A disk image corresponds exactly to a hard drive. If you do "-hdb
disk.img", it corresponds to connecting a hard drive as primary slave to
your virtual machine. If you do "-hda disk.img" or just "disk.img",
you're connecting it as primary master.

> I'm following;
> https://help.ubuntu.com/community/KVM#Creating%20a%20network%20bridge%20on%20the%20host
> 
> trying to sort out the problem on networking
> 
> 
> On running
> $ sudo kvm-bridge -m 512 -hdb disk.img -cdrom /dev/scd0 -boot d -smp 2
> nohup: appending output to `nohup.out'
> 
> It always appends output to `nohup.out'

What is the problem?

-- 
Soren Hansen               | 
Virtualisation specialist  | Ubuntu Server Team
Canonical Ltd.             | http://www.ubuntu.com/

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Re: Fail to create disk.img (SOLVED)

[Soren Hansen]

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On Thu, Aug 07, 2008 at 02:37:03PM +0800, Stephen Liu wrote:
>>> On running $ sudo kvm-bridge -m 512 -hdb disk.img -cdrom /dev/scd0
>>> -boot d -smp 2
>>> nohup: appending output to `nohup.out'
>>> It always appends output to `nohup.out'
>> What is the problem?
> Hi Soren,

Hello.

> What I have been trying around is to solve networking problem on VM.

How is that related to appending output to nohup.out?

> However it is quite slow on booting and on starting other Window
> applications as well.  IIRC during installing KVM packages I came
> across a document on Internet informing me to install a package
> qemu-??? (something like that).  

I have no clue as to what this might be.

> Following packages have been installed on Host
> kqemu-common
> kqemu-source
> kqemu-modules

kqemu has nothing to do with kvm. It's a different means for
"accelerating" qemu.

> Each time to start Vista I have to run;
> # kvm -hdb vista.img -cdrom /dev/scd0 -m 1024 -vnc :1
> 
> and put the Vista installer on CDRom.  The above command was run by me
> creating vista.img
> 
> 
> If running;
> # kvm vista.img -vnc :1
> 
> I can't start Vista.  

Stephen, this shall be my last e-mail to you.

Having to explain everything multiple times is tiring, and a very poor
use of my (or anyone's) time. This particular issue, I've already
explained twice; both times in this thread. Last time was in the very
e-mail to which you have just responded. I find it mind boggling that I
need to remind you that this list is read by many people, most of whom
are very busy.  Yet you have the audacity to ask the same questions and
report the same "problems" over and over. I shall not allow you to steal
any more of my time, so you have just become only the second person ever
to be redirected to /dev/null (in case you don't know what /dev/null is,
it's where I keep all my very special e-mail).

For the third time: When you put "-hdb vista.img" on your command line,
you're attaching vista.img as primary slave. If you put "-hda vista.img"
or just "vista.img" you're attaching it as primary master. Very few
bootloaders will be happy about being installed in one place only to be
moved to another place when actually booting. It seems Vista's
bootloader is no different.

-- 
Soren Hansen               | 
Virtualisation specialist  | Ubuntu Server Team
Canonical Ltd.             | http://www.ubuntu.com/

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