On Mon, 16 Nov 2009 23:31:02 +0530, Tapas Mishra <tapas@xxxxxxxxxxxx>
wrote:
> Thanks a lot for the reply by the time you replied luckily without any
> logical reason the xm console mydomU had booted
> then I executed
> apt-get install ubuntu-desktop linux-image-virtual lvm2 user-setup
> it took an hour to do a lot of downloads and since then it has been
> setting up a lot of things which I feel are the desktop environments
> of \
> Ubuntu since you mentioned Debian so I am curious to know in terms of
> stability since today only I was able to finish downloading all my
> DVDs of Debian so in terms of stability did you felt it better than
> Ubuntu or any other distribution if I talk about Xen
>
When the Ubuntu 8.04 LTS version came out, I did a fresh install rather
than an upgrade and moved to Xen as a virtualization platform. It was at
this time that I encountered a lot of issues that required patching to make
Ubuntu behave in the virtualized environment.
Because of the patching I had done, each time an apt-get upgrade updated
my Xen installation, I had to reapply the patches for Ubuntu. The
stability issues I had weren't specific to Xen. Nearly each time I
upgraded Ubuntu, one of my underlying services (DNS, Email, Web Server,
etc.) would go offline for what appeared to be mysterious reasons.
Although I really like Ubuntu in a desktop environment, I began to feel
that for my production servers, Ubuntu was a little too bleading edge. As
a result, I moved to Debian Lenny and have not experienced nearly as many
issues with package upgrades. It just works.
I use the site How to Forge as a reference when beginning new projects.
There are several tutorials for various distributions. There is a tutorial
for installing Xen onto Debian Lenny at the following link. There are
similar tutorials for Ubuntu as well if you decide to stick with that
distribution.
http://www.howtoforge.com/virtualization-with-xen-on-debian-lenny-amd64
If you feel like trying Debian, you may want to try the minimal Debian
package (http://www.debian.org/CD/netinst/). It is a much smaller download
but requires an Internet connection during installation.
If you have questions that aren't Xen specific, you can feel free to
contact me off list. Within reason, I can try to point you to resources
that I have found useful.
> On Mon, Nov 16, 2009 at 11:13 PM, Thomas Jensen
> <tom.jensen@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>> On Mon, 16 Nov 2009 21:42:50 +0530, Tapas Mishra <tapas@xxxxxxxxxxxx>
>> wrote:
>>> I am installing domU image
>>>
>>> after executing the following command
>>>
>>> xen-create-image --hostname=mydomU --ip 192.168.1.22 --gateway
>>> 192.168.1.250 --netmask 255.255.255.0 --broadcast 192.168.1.255
>>> --dist=jaunty --mirror=http://archive.ubuntu.com/ubuntu --size=4Gb
>>> --memory=64Mb --swap=128MB --arch=i386 --partitions=with-data --boot
>>> --passwd --role udev
>>>
>>>
>>> I get following message at the last
>>>
>>>
>>>
>>> Creating ext3 filesystem on /workarea/xen/domains/mydomU/data.img
>>> Done
>>> Installation method: debootstrap
>>> Done
>>>
>>> Running hooks
>>> Done
>>>
>>> Role: udev
>>> File: /etc/xen-tools/role.d/udev
>>> Role script completed.
>>>
>>> Creating Xen configuration file
>>> Done
>>> Setting up root password
>>> Enter new UNIX password:
>>> Retype new UNIX password:
>>> passwd: password updated successfully
>>> All done
>>> root@abhitech-desktop:~# Started new Xen guest: mydomU
>>> [/etc/xen/mydomU.cfg]
>>>
>>>
>>> Logfile produced at:
>>> /var/log/xen-tools/mydomU.log
>>>
>>> Now here is the problem since the terminal on which it happened cursor
>>> is blinking it is not even giving me the shell to log in or execute
>>> any command so someone on IRC suggested me to mount the images
>>>
>> I too started out using Xen with Ubuntu for both Dom0 and DomU
machines.
>> At the time, I was using the Ubuntu 8.04 LTS version and used the
distro
>> specific install through apt-get. Anyhow, I encountered a lot of
>> problems
>> with console logins. After searching the Internet, I found I wasn't
>> alone.
>> I discovered a lot of patches required to fix login issues as well as
>> problems with the shutdown of Ubuntu domains. You have mentioned both
>> of
>> these problems in your recent posts.
>>
>> I have sinced moved to Debian Lenny for Dom0 and all DomU machines.
>> That
>> change has made a huge difference in the stability I have experienced
>> with
>> Xen.
>>
>> However, I still had to add configuration variables to my config files
to
>> ensure the console matches between Xen and my Debian virtual machine.
>> The
>> instructions I used were on the Xen wiki website and was listed as a
>> known
>> issue with Debian.
>>
>> Despite those configuration changes, I sometimes still see the blank
>> console as you described when using the xm console command. Whenever
>> this
>> occurs, I simply hit the enter key on the keyboard and the login prompt
>> shows up on my console.
>>
>> It is by no means scientific and I don't have a technical explanation
for
>> why this occurs. But it works and that is good enough for me in most
>> situations.
>>>
>>> Before I do that xm list shows me the following output
>>>
>>> root@abhitech-desktop:~# xm list
>>> Name ID Mem VCPUs State
>>> Time(s)
>>> Domain-0 0 364 1 r-----
>>> 2547.1
>>> mydomU 2 64 1 -b----
>>
>>> 9.5
>>> root@abhitech-desktop:~#
>>>
>>>
>>> and if I execute xm console mydomU then it gave me erro mydomU is not
>>> installed where as
>>> in the domains directory I have
>>> root@abhitech-desktop:/workarea/xen/domains/mydomU# ls
>>> data.img root.img swap.img
>>> all the above files whose sizes are
>>>
>>> root@abhitech-desktop:/workarea/xen/domains/mydomU# du -ch ./*
>>> 194M ./data.img
>>> 719M ./root.img
>>> 4.0K ./swap.img
>>> 913M total
>>>
>> I also started out using disk image files. I have sinced moved to
using
>> logical partitions through LVM for my DomU disks. It is very easy to
>> mount
>> these logical volumes in Dom0 with the mount command. Mounting should
>> be
>> done when the DomU is not running. One mounted, you can edit files for
>> the
>> DomU from the Dom0 console.
>>>
>>> Now how should I proceed
>>> console is not letting me log in inspite of my repeated attempts
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Mon, Nov 16, 2009 at 9:24 PM, Arpan Jindal <jindalarpan@xxxxxxxxx>
>>> wrote:
>>>> can you explain it in details what are you doing and where you are
>> facing
>>>> this issue?
>>>>
>>>> On Mon, Nov 16, 2009 at 9:22 PM, Tapas Mishra <tapas@xxxxxxxxxxxx>
>> wrote:
>>>>>
>>>>> how to mount the domU images on dom0 to chroot them
>>>>> mount it on the dom0 and chroot to it. I am getting an error xen
>>>>> console mydomU
>>>>>
>>>>> _______________________________________________
>>>>> Xen-users mailing list
>>>>> Xen-users@xxxxxxxxxxxxxxxxxxx
>>>>> http://lists.xensource.com/xen-users
>>>>
>>>>
>>>
>>> _______________________________________________
>>> Xen-users mailing list
>>> Xen-users@xxxxxxxxxxxxxxxxxxx
>>> http://lists.xensource.com/xen-users
>>
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