virt-p2v-make-disk man page

virt-p2v-make-disk — Build the virt-p2v disk using virt-builder

Synopsis

virt-p2v-make-disk -o /dev/sdX [os-version]

Description

virt-p2v(1) converts a physical machine to run virtualized on KVM, managed by libvirt, OpenStack, oVirt, Red Hat Enterprise Virtualisation (RHEV), or one of the other targets supported by virt-v2v(1).

virt-p2v-make-disk is a script which creates a bootable disk image or USB key containing virt-p2v. It uses virt-builder(1) to do this, and is just a small shell script around virt-builder.

The required -o parameter specifies where the output should go, for example to a USB key (eg. "-o /dev/sdX") or to a file. If you pass a device name, then the existing contents of the device will be erased.

“os-version” parameter

The optional "os-version" parameter is the base Linux distro to use for the operating system on the ISO. If you don't set this parameter, the script tries to choose a suitable default for you. Most users should not use the "os-version" parameter.

The base OS selected for virt-p2v is not related in any way to the OS of the physical machine that you are trying to convert.

To list possible "os-version" combinations, do:

virt-builder -l

Examples

Write a virt-p2v bootable USB key on /dev/sdX (any existing content on /dev/sdX is erased):

virt-p2v-make-disk -o /dev/sdX

Write a virt-p2v bootable virtual disk image, and boot it under qemu:

virt-p2v-make-disk -o /var/tmp/p2v.img
qemu-kvm -m 1024 -boot c \
  -drive file=/var/tmp/p2v.img,if=virtio,index=0 \
  -drive file=/var/tmp/guest.img,if=virtio,index=1

where /var/tmp/guest.img would be the disk image of some guest that you want to convert (for testing only).

Adding Extra Packages

You can install extra packages using the --install option. This can be useful for making a more fully-featured virt-p2v disk with extra tools for debugging and troubleshooting. Give a list of packages, separated by commas. For example:

virt-p2v-make-disk -o /var/tmp/p2v.img --install tcpdump,traceroute

Adding an SSH Identity

You can inject an SSH identity (private key) file to the image using the --inject-ssh-identity option.

First create a key pair. It must have an empty passphrase:

ssh-keygen -t rsa -N '' -f id_rsa

This creates a private key ("id_rsa") and a public key ("id_rsa.pub") pair. The public key should be appended to the "authorized_keys" file on the virt-v2v conversion server (usually to "/root/.ssh/authorized_keys").

The private key should be injected into the disk image and then discarded:

virt-p2v-make-disk [...] --inject-ssh-identity id_rsa
rm id_rsa

When booting virt-p2v, specify the URL of the injected file like this:

│         User name: [root_____________________________] │
│                                                        │
│          Password: [    <leave this field blank>     ] │
│                                                        │
│  SSH Identity URL: [file:///var/tmp/id_rsa___________] │

or if using the kernel command line, add:

p2v.identity=file:///var/tmp/id_rsa

For more information, see "SSH IDENTITIES" in virt-p2v(1).

32 Bit Virt-P2v

For improved compatibility with older hardware, virt-p2v-make-disk has an --arch option. The most useful setting (on x86-64 hosts) is --arch i686, which builds a 32 bit virt-p2v environment that will work on older hardware. 32 bit virt-p2v can convert 64 bit physical machines and can interoperate with 64 bit virt-v2v and 64 bit hypervisors.

This option requires that you have built virt-p2v.$arch (ie. usually virt-p2v.i686) by some means, and that you install it next to the ordinary virt-p2v binary (eg. in $libdir/virt-p2v/ or $VIRT_V2V_DATA_DIR). This is outside the scope of this manual page, but you can find some tips in "BUILDING i686 32 Bit Virt-P2v" in guestfs-building(1).

Options

--help
Display help.
--arch ARCH
Set the architecture of the virt-p2v ISO. See "32 Bit Virt-P2v" above.

If this option is not supplied, then the default is to use the same architecture as the host that is running virt-p2v-make-disk.
--inject-ssh-identity id_rsa
Add an SSH identity (private key) file into the image. See "Adding an SSH Identity" above.
--install pkg,pkg,...
Add extra packages to the image. See "Adding Extra Packages" above.
--no-warn-if-partition
Normally you should not write to a partition on a USB drive (ie. don't use "-o /dev/sdX1", use "-o /dev/sdX" to make a bootable USB drive). If you do this, virt-builder prints a warning. This option suppresses that warning.
-o OUTPUT
--output OUTPUT
Write output to "OUTPUT", which can be a local file or block device. The existing contents of the device will be erased.
-v
--verbose
Enable verbose output. Use this if you need to debug problems with the script or if you are filing a bug.
-V
--version
Display version number and exit.

Files

$libdir/virt-p2v/virt-p2v.xz
The virt-p2v(1) binary which is copied into the bootable disk image.

The location of the binary can be changed by setting the "VIRT_P2V_DATA_DIR" environment variable.
$datadir/virt-p2v/issue
$datadir/virt-p2v/launch-virt-p2v.in
$datadir/virt-p2v/p2v.service
Various data files that are copied into the bootable disk image.

The location of these files can be changed by setting the "VIRT_P2V_DATA_DIR" environment variable.

Environment Variables

"VIRT_P2V_DATA_DIR"
The directory where virt-p2v-make-disk looks for data files (see "Files" above). If not set, a compiled-in location is used.

See Also

virt-p2v(1), virt-p2v-make-kickstart(1), virt-p2v-make-kiwi(1), virt-v2v(1), http://libguestfs.org/.

Authors

Richard W.M. Jones http://people.redhat.com/~rjones/

License

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Bugs

To get a list of bugs against libguestfs, use this link: https://bugzilla.redhat.com/buglist.cgi…

To report a new bug against libguestfs, use this link: https://bugzilla.redhat.com/enter_bug.c…

When reporting a bug, please supply:

·
The version of libguestfs.
·
Where you got libguestfs (eg. which Linux distro, compiled from source, etc)
·
Describe the bug accurately and give a way to reproduce it.
·
Run libguestfs-test-tool(1) and paste the complete, unedited output into the bug report.

Referenced By

guestfs-building(1), virt-p2v(1), virt-p2v-make-kickstart(1), virt-p2v-make-kiwi(1).

2016-10-25 libguestfs-1.35.14 Virtualization Support