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

[Amit Soni]

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
>



-- 
Amit Soni
Email-id: get.amitsoni at gmail.com, get.amitsoni at hotmail.com