Sharktooth

Migrating from ESXi to KVM/QEMU

mad — Mon, 21 Nov 2011 22:15:16 +0100

Migrating from ESXi to KVM/QEMU

Migrating virtual machines from ESXi 4.1 to a KVM host was easiert than I thought. It was nothing more than copy the .vmdk file from the ESXi to the KVM host, create a virtual machine and add the .vmdk as a disk.

A command line say more than a thousand words.

scp -r root@esxi:/vmfs/volumes/datastore1/vm1 /tmp # Copy VM to KVM host
lvcreate -n /dev/VolGroup/vm1 -L 12g VolGroup # Create partition for VM
dd if=/tmp/vm1/vm1-flat.vmdk of=/dev/VolGroup/vm1 # Transfer raw image to partition

After that create a virtual machine and use the partition as disk. You could also use the .vmdk file directly w/o transferring it to a partition.

Bonus round:

dd if=/tmp/vm1/vm1-flat.vmdk | pv | of=/dev/VolGroup/vm1 # Show progress while transferring

New and changed items - created

mad — Wed, 27 Jan 2010 21:43:55 +0100

testerle

Fire-Breathing

mad — Wed, 24 Jun 2009 21:59:40 +0100

Fire-Breathing

Me firebreathing…

Fire-Breathing

mad — Wed, 24 Jun 2009 21:55:49 +0100

Shut up, and do as I say!

mad — Fri, 21 Nov 2008 10:23:34 +0100

Shut up, and do as I say!

How to force things in Linux.

X.org resolution

BEWARE: Make sure that your graphic card and your monitor support the resolutions you want to use. Otherwise hardware failure may occur!

In some cases X.org won't use the resolution you want and you know your hardware supports. Here is a way to force it. Adapt the snippet to your configuration.

Section "Monitor"
    Identifier  "Monitor0"
    HorizSync   31-101
    VertRefresh 60-160
EndSection

Section "Device"
    Identifier  "Card0"
    Driver      "YOURDRIVER"
    Option      "UseEDIDFreqs" "FALSE"
    Option      "UseEDIDDpi" "FALSE"
    Option      "ModeValidation" "NoEdidModes"
EndSection

Section "Screen"
    Identifier   "Default Screen"
    Device       "Card0"
    Monitor      "Monitor0"
    DefaultDepth 24
    Option       "NoVirtualSizeCheck"
    Option       "UseEDIDFreqs" "FALSE"
    Option       "UseEDIDDpi" "FALSE"
    Option       "ModeValidation" "NoEdidModes"
    SubSection   "Display"
        Depth        24
        Modes        "1280x1024"
    EndSubSection
EndSection

Links

mad — Mon, 17 Nov 2008 08:58:50 +0100

Things you should not do

mad — Thu, 16 Oct 2008 09:48:28 +0100

Things you should not do

What does this commandline do?

grep > *

Please guess before you read on.

Okay, let's test:

% ls -l
total 20K
-rwx------  1 xxx xxx  307 2008-10-16 09:44 test1.sh*
-rwx------  1 xxx xxx  112 2008-10-16 09:44 test2.sh*
-rwx------  1 xxx xxx  208 2008-10-16 09:44 test3.sh*

% grep > *
Usage: grep [OPTION]... PATTERN [FILE]...
Try `grep --help' for more information.

% ls -l
total 0
-rwx------ 1 xxx xxx 0 2008-10-16 09:46 test1.sh*
-rwx------ 1 xxx xxx 0 2008-10-16 09:46 test2.sh*
-rwx------ 1 xxx xxx 0 2008-10-16 09:46 test3.sh*

Obviously the '>' pipes nothing to all files '*' in this directory. Not nice if you don't have a backup.

Sharktooth

Migrating from ESXi to KVM/QEMU

Migrating from ESXi to KVM/QEMU

New and changed items - created

Fire-Breathing

Fire-Breathing

Fire-Breathing

Shut up, and do as I say!

Shut up, and do as I say!

X.org resolution

Links

Links

Webdesign

Security and privacy protection

Documentation

Searchengines, Encyclopedias and Dictionaries

Linux hardware

Things you should not do

Things you should not do