[one-users] Not able to access running Ubuntu vm

Fri Apr 15 03:52:36 PDT 2011

Hello,

I made this img file using the following commands:

qemu-img create -f qcow2 vdisk.img 10G
qemu-system-x86_64 -hda vdisk.img -cdrom /path/to/ubuntu-server.iso
-boot d  -m 384
mv vdisk.img ubuntu-1010-server-network-init.img

So, I am pretty sure it's qcow2 format.

Also, I tried to convert the img file to the raw format using the
following command but still I got the same blank screen:

qemu-img convert -O raw ubuntu-1010-server-network-init.img
ubuntu-1010-server-network-init.raw

So I am still not able to run ubuntu VM in opennebula. I would be
great if there are some sort of standard contextualized images of
standard linux distros available for usage.

Amit

On Fri, Apr 15, 2011 at 1:26 PM, Olivier Sallou <olivier.sallou at irisa.fr> wrote:
> your source file is
>
> ubuntu-1010-server-network-init.img
>
> with img extension are you sure it is a qcow2?
>
> Olivier
> Le 4/15/11 12:13 PM, Amit Soni a écrit :
>> Hello,
>>
>> There is some interesting progress. I was able to connect to the vnc
>> session of the machine. I found the following output:
>>
>> Booting from Hard Disk ...
>> Boot failed: not a bootable disk
>>
>> No bootable device.
>>
>> Apparently, the format of the IMG file is qcow2 and I didn't mentioned
>> that format in the VM template. Hence, I did the following changes in
>> the VM template as mentioned in the link
>> https://support.opennebula.pro/entries/348847-using-qcow-images:
>>
>> DISK   = [
>>   source   = "/srv/cloud/images/ubuntu/ubuntu-1010-server-network-init.img",
>>   target   = "hda",
>>   readonly = "no",
>>   DRIVER=qcow2
>> ]
>>
>> However, now when I access the VM from the vnc session I see blank
>> screen (not a single character on the screen). The VM is still in the
>> "runn" state.
>> Now I am really confused what could have went wrong.
>>
>> --Amit
>>
>>
>> 2011/4/14 Amit Soni <get.amitsoni at gmail.com>:
>>> Hello,
>>>
>>> I was trying the same thing using following parameters in the template file:
>>>
>>> RAW = [ type = "kvm",
>>>              data = "<devices><serial type=\"pty\"><source
>>> path=\"/dev/pts/5\"/><target port=\"0\"/></serial><console type=\"pty\"
>>> tty=\"/dev/pts/5\"><source path=\"/dev/pts/5\"/><target
>>> port=\"0\"/></console></devices>" ]
>>>
>>> However, when I accessed the machine using the virsh console I got the
>>> following output after which it just froze. I hit "enter" many time
>>> but no response. Although I was able to get out of the console:
>>>
>>> virsh # console one-13
>>> Connected to domain one-13
>>> Escape character is ^]
>>>
>>> I read somewhere that this can be because I have not enabled the VM to
>>> be accessed from serial console so then I followed the following guide
>>> to make some modification in the VM:
>>>
>>> https://help.ubuntu.com/community/SerialConsoleHowto
>>>
>>> However, after making the changes when I boot the VM using the "qemu"
>>> command I just  see the some output like follows:
>>>
>>> fsck from util-linux-ng 2.17.2
>>> /dev/sda1: clean ... files, ... blocks
>>>  * Starting AppArmor profiles
>>>
>>> And that's it. After this there is no response from the VM. However, I
>>> am able to ssh into the VM (since I have started it from qemu
>>> command).
>>>
>>> But the important thing is, even after these changes for enabling
>>> serial console in the VM and starting the VM from the opennebula with
>>> the above mentioned RAW parameters, I get the same result. It get the
>>> same output upon accessing the console and after that it just freezes.
>>>
>>> Could see any mistake that I might be making.
>>>
>>> Thanks & Regards,
>>> Amit
>>>
>>>
>>> 2011/4/14 Idafen Santana Pérez <idafensp at gmail.com>:
>>>> Hi Zeeshan,
>>>>
>>>> how do you access a running VM?
>>>>
>>>> Regards
>>>> Idafen
>>>>
>>>> On Thu, Apr 14, 2011 at 6:13 PM, Zeeshan Ali Shah <zashah at pdc.kth.se> wrote:
>>>>> Manually Console to the running VM to see what went wrong ..
>>>>>
>>>>> /Zeeshan
>>>>>
>>>>> On Thu, Apr 14, 2011 at 5:40 PM, Amit Soni <get.amitsoni at gmail.com> wrote:
>>>>>> Hello,
>>>>>>
>>>>>> I manually created a Ubuntu IMG by installing the Ubuntu 10.10 server
>>>>>> ISO using qemu command as follows:
>>>>>>
>>>>>> qemu-img create -f qcow2 vdisk.img 10G
>>>>>> qemu-system-x86_64 -hda vdisk.img -cdrom /path/to/ubuntu-server.iso
>>>>>> -boot d  -m 384
>>>>>>
>>>>>> Then I added the network contextualisation scripts as mentioned in the
>>>>>> first section of the article:
>>>>>> http://opennebula.org/documentation:archives:rel2.0:cong
>>>>>> But I did one change; I added the execution of the "vmcontext" script
>>>>>> in the "/etc/init.d/networking" script since adding the "vmcontext"
>>>>>> script in the runlevel 2 didn't helped.
>>>>>>
>>>>>> Now when I start the installed Ubuntu IMG using the following command,
>>>>>> I get the desired IP in the machine. I am also able to SSH to the
>>>>>> machine:
>>>>>>
>>>>>> qemu-system-x86_64 -hda ubuntu-server.img  -net
>>>>>> nic,macaddr=02:00:c0:a8:02:08 -net tap
>>>>>>
>>>>>> However, when I use this IMG in the opennebula template file the
>>>>>> machine goes in the "runn" state but I am not able to access the
>>>>>> machine. My template file is as follows:
>>>>>>
>>>>>> NAME   = ubuntu
>>>>>> CPU    = 1
>>>>>> MEMORY = 400
>>>>>>
>>>>>> DISK   = [
>>>>>>  source   = "/srv/cloud/images/ubuntu/ubuntu-server.img",
>>>>>>  target   = "hda",
>>>>>>  readonly = "no" ]
>>>>>>
>>>>>> NIC    = [ NETWORK = "VM_LAN" ]
>>>>>>
>>>>>> FEATURES=[ acpi="no" ]
>>>>>>
>>>>>> Moreover, when I start the standard ttylinux IMG in am easily able to
>>>>>> SSH to the machine.
>>>>>> Can anyone guide me to some standard documentation of how to create a
>>>>>> IMG for opennebula starting from an ISO.
>>>>>>
>>>>>> Thanks & Regards,
>>>>>> Amit Soni
>>>>>> _______________________________________________
>>>>>> Users mailing list
>>>>>> Users at lists.opennebula.org
>>>>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> --
>>>>> Regards
>>>>>
>>>>> Zeeshan Ali Shah
>>>>> System Administrator
>>>>> PDC-Center for High Performance Computing
>>>>> KTH-Royal Institute of Technology , Sweden
>>>>>
>>>>> +46 8 790 9115
>>>>>
>>>>> _______________________________________________
>>>>> Users mailing list
>>>>> Users at lists.opennebula.org
>>>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>>>
>>>>>
>>>
>>>
>>> --
>>> Amit Soni
>>> Email-id: get.amitsoni at gmail.com, get.amitsoni at hotmail.com
>>>
>>
>>
>
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-- 
Amit Soni
Email-id: get.amitsoni at gmail.com, get.amitsoni at hotmail.com