Tuesday, March 13, 2012

Migrate from Virtualbox to KVM

Some days ago I decided to migrate some of my VIRTUALBOX test on a KVM server.

Why? easy, KVM > VIRTUALBOX for a lot of reason. Probably this link will be enough to convince you.


Have a computer with virtualbox make everything easier but I wanted to do everything without virtuabox. (Link with virtuabox)

So we have to converto VDI images into somethink KVM can read. I used a simple ".RAW" images. This step is easy, and you can find tons of post online:
http://blog.bodhizazen.net/linux/convert-virtualbox-vdi-to-kvm-qcow/
http://xpapad.wordpress.com/2010/02/21/migrating-from-virtualbox-to-vmware-in-linux/
http://www.dedoimedo.com/computers/virtualbox-convert.html
http://kevin.deldycke.com/2007/04/how-to-grow-any-qemu-system-image/

I started with my VirtualBox-VM Debian6 test server, where I usually try new stuff before put it on a real PC or anyway in the main VM.
Convert the hard drive from VDI to RAW, I used the RAW image inside a KVM VM and everything worked fine.

Windows XP:
After conver the VDI image and put the RAW inside a KVM VM i had this issue:

 0x0000007B
BLUE SCREEN OF DEATH (BSOD)
 
This blue screen arrived at the first second third and ALL boot after the conversion....
I searched and I found something.
Talking on IRC I realized the problem was the hard drive controller.
What we have to do? touch a bit WinXp registry... how to do it easily?
I found 2 solutions:
  1. With virtualbox: This "patch". Run it before your turn off the last time your virtualbox machine before the migration. I will say to XP to accept all HD chipset (or something similar)
  2. Without virtualbox: HIREN's boot cd or as a lot of SysAdmin know it... Ass saver! Simply boot micro XP goes on the tools and find "Fix Hard disk controller" under Registry. And DONE!

I found another problem, something I really though I wasn't to solve it fast, read a lot of stuff, like reinstall windows over the existing one or make a brand new VM.
I didn't want! so I pass more time searching than the time I needed to reinstall windows! But I Found it

Fist the problem (link):
So what happened? I haven't only moved my VM from Virtualbox to KVM on the same machine but I move it from a AMD Athlon x2 to two different PC (to test) an AMD phenon x6 and Intel SB i5. On the AMD I haven't had this problem, but on the Intel I had! So I had problem because I changed PROCESSOR!!!! Fu*k OFF!

Thanks to this AWESOME GUY we have a solution for this problem too....
http://blogs.msdn.com/b/virtual_pc_guy/archive/2005/10/24/484461.aspx

I just start my VM XP in safe mode and edit the register like he wrote

And here we are! true you won't have reconized the CPU on hardware manager on Windows, but who care it's Windows! :D

Hope this post will help somebody.
Have a nice day!

Saturday, January 14, 2012

New project with Samsung Series 7

I want to make this computer work as his best! The hardware is great and Linux, IMHO is much better than windows. 

http://slashsda.blogspot.com/p/samsung-700zx-chronos-series-7.html

This is the page I made where I'm going to write all my progress!

Stefano

Monday, July 18, 2011

Linux Kiosk

Some days ago I saw this video on youtube (Linux Kiosk Intro) I thought it was a great idea! Sometime we would like to give to an user the possibility to surf the net but nothing else, or anyway you need a computer ONLY to use the same program and nothing else! (Can be a program to sell tickets, or to see what table are busy in your restaurant and what they order at this table, or whatever)
Usually you buy a computer, then you usually pay for a Windows OS and you put the program on this system.
What's wrong with that?
  • You pay for a computer probably too powerfull for your needs.
  • You pay for an OS you probably you will not use for real
  • Maybe you must pay for some software to lock windows options to have a better security.
How can we solve that?
We can use Linux! Linux is free, well supported, and you can control everything you want! And with this method you don't need a powerful computer. A 10year old computer could be powerful enough.

How can we use Linux?
That's my solution! (The solution on the youtube video is good, my way is only different!)

--------------------------------------------------------------------------------------

I used ubuntu x64 11.04
Like you I used only basic system then i installed (with all dependencies):
  • Xorg is the graphics environment you need to start every GUI programs, there are other programs but I barely know that one so I used this.
  • Chromium-browser is the program I want to run, it's a version of Chrome browser, but you can use Firefox, or a special program like a python program you made.
  • Slim is a desktop-independent graphical login manager for X11
Then I set slim like that:
PS: my username is "media"

#Path, X server and arguments (if needed)
# Note: -xauth $authfile is automatically appended
default_path /usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
default_xserver /usr/bin/X11/X
xserver_arguments -nolisten tcp

# Commands for halt, login, etc.
halt_cmd /sbin/shutdown -h now
reboot_cmd /sbin/shutdown -r now
console_cmd /usr/bin/xterm -C -fg white -bg black +sb -T "Console login" -e /bin/sh -c "/bin/cat /etc/issue.net; exec /bin/login"
#suspend_cmd /usr/sbin/suspend

# Full path to the xauth binary
xauth_path /usr/bin/X11/xauth

# Xauth file for server
authfile /var/run/slim.auth


# Activate numlock when slim starts. Valid values: on|off
# numlock on

# Hide the mouse cursor (note: does not work with some WMs).
# Valid values: true|false
# hidecursor false

# This command is executed after a succesful login.
# you can place the %session and %theme variables
# to handle launching of specific commands in .xinitrc
# depending of chosen session and slim theme
#
# NOTE: if your system does not have bash you need
# to adjust the command according to your preferred shell,
# i.e. for freebsd use:
# login_cmd exec /bin/sh - ~/.xinitrc %session
[b]login_cmd exec /bin/bash -login /etc/X11/Xsession chromium-browser[/b]

# Commands executed when starting and exiting a session.
# They can be used for registering a X11 session with
# sessreg. You can use the %user variable
#
# sessionstart_cmd    some command
# sessionstop_cmd    some command

# Start in daemon mode. Valid values: yes | no
# Note that this can be overriden by the command line
# options "-d" and "-nodaemon"
# daemon    yes

# Available sessions (first one is the default).
# The current chosen session name is replaced in the login_cmd
# above, so your login command can handle different sessions.
# see the xinitrc.sample file shipped with slim sources
sessions default,startxfce4,openbox,ion3,icewm,wmaker,blackbox,awesome

# Executed when pressing F11 (requires imagemagick)
screenshot_cmd scrot /root/slim.png

# welcome message. Available variables: %host, %domain
welcome_msg Welcome to %host

# Session message. Prepended to the session name when pressing F1
# session_msg Session:

# shutdown / reboot messages
shutdown_msg The system is halting...
reboot_msg The system is rebooting...

# default user, leave blank or remove this line
# for avoid pre-loading the username.
[b]default_user media[/b]

# Focus the password field on start when default_user is set
# Set to "yes" to enable this feature
#focus_password no

# Automatically login the default user (without entering
# the password. Set to "yes" to enable this feature
[b]auto_login yes[/b]


# current theme, use comma separated list to specify a set to
# randomly choose from
current_theme debian-spacefun

# Lock file
lockfile /var/run/slim.lock

# Log file
logfile /var/log/slim.log


IMPORTANT:

# NOTE: if your system does not have bash you need
# to adjust the command according to your preferred shell,
# i.e. for freebsd use:
# login_cmd exec /bin/sh - ~/.xinitrc %session
login_cmd exec /bin/bash -login /etc/X11/Xsession chromium-browser


# default user, leave blank or remove this line
# for avoid pre-loading the username.
default_user media

# Automatically login the default user (without entering
# the password. Set to "yes" to enable this feature
auto_login yes

You can leave %session on login_cmd if you change the possible sessions in sessions.

And it works not bad at all, maybe i have to fix some stuff with mouse and size of the windows, and last if I close the last tab it goes back to login page, but i don't need openbox!