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206 lines
5.4 KiB
Plaintext
206 lines
5.4 KiB
Plaintext
=pod
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=head1 NAME
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virt-clone - clone existing virtual machine images
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=head1 SYNOPSIS
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B<virt-clone> [OPTION]...
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=head1 DESCRIPTION
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B<virt-clone> is a command line tool for cloning existing virtual machine
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images using the C<libvirt> hypervisor management library. It will copy
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the disk images of any existing virtual machine, and define a new guest
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with an identical virtual hardware configuration. Elements which require
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uniqueness will be updated to avoid a clash between old and new guests.
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By default, virt-clone will show an error if the necessary information to
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clone the guest is not provided. The --auto-clone option will generate
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all needed input, aside from the source guest to clone.
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=head1 OPTIONS
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Most options are not required. Minimum requirements are --original or
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--original-xml (to specify the guest to clone), --name, and appropriate
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storage options via -file.
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=over 4
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=item -h, --help
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Show the help message and exit
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=item --connect=URI
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Connect to a non-default hypervisor. See L<virt-install(1)> for details
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=back
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=head2 General Options
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General configuration parameters that apply to all guest clones.
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=over 2
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=item -o ORIGINAL_GUEST, --original=ORIGINAL_GUEST
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Name of the original guest to be cloned. This guest must be shut off or paused
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since it is not possible to safely clone active guests at this time.
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=item --original-xml=ORIGINAL_XML
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Libvirt guest xml file to use as the original guest. The guest does not need to
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be defined on the libvirt connection. This takes the place of the
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C<--original> parameter.
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=item --auto-clone
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Generate a new guest name, and paths for new storage.
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An example or possible generated output:
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Original name : MyVM
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Generated clone name : MyVM-clone
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Original disk path : /home/user/foobar.img
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Generated disk path : /home/user/foobar-clone.img
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If generated names collide with existing VMs or storage, a number is appended,
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such as foobar-clone-1.img, or MyVM-clone-3.
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=item -n NAME, --name=NAME
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Name of the new guest virtual machine instance. This must be unique amongst
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all guests known to the hypervisor connection, including those not
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currently active.
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=item -u UUID, --uuid=UUID
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UUID for the guest; if none is given a random UUID will be generated. If you
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specify UUID, you should use a 32-digit hexadecimal number. UUID are intended
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to be unique across the entire data center, and indeed world. Bear this in
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mind if manually specifying a UUID
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=back
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=head2 Storage Configuration
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=over 2
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=item -f DISKFILE, --file=DISKFILE
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Path to the file, disk partition, or logical volume to use as the backing store
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for the new guest's virtual disk. If the original guest has multiple disks,
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this parameter must be repeated multiple times, once per disk in the original
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virtual machine.
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=item --force-copy=TARGET
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Force cloning the passed disk target ('hdc', 'sda', etc.). By default,
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C<virt-clone> will skip certain disks, such as those marked 'readonly' or
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'shareable'.
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=item --nonsparse
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Fully allocate the new storage if the path being cloned is a sparse file.
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See L<virt-install(1)> for more details on sparse vs. nonsparse.
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=item --preserve-data
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No storage is cloned: disk images specific by --file are preserved as is,
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and referenced in the new clone XML. This is useful if you want to clone
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a VM XML template, but not the storage contents.
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=back
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=head2 Networking Configuration
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=over 2
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=item -m MAC, --mac=MAC
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Fixed MAC address for the guest; If this parameter is omitted, or the value
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C<RANDOM> is specified a suitable address will be randomly generated. Addresses
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are applied sequentially to the networks as they are listed in the original
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guest XML.
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=back
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=head2 Miscellaneous Options
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=over 2
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=item --print-xml
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Print the generated clone XML and exit without cloning.
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=item --replace
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Shutdown and remove any existing guest with the passed C<--name> before
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cloning the original guest.
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=item -d, --debug
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Print debugging information to the terminal when running the install process.
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The debugging information is also stored in
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C<~/.cache/virt-manager/virt-clone.log> even if this parameter is omitted.
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=back
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=head1 EXAMPLES
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Clone the guest called C<demo> on the default connection, auto generating
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a new name and disk clone path.
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# virt-clone \
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--original demo \
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--auto-clone
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Clone the guest called C<demo> which has a single disk to copy
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# virt-clone \
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--original demo \
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--name newdemo \
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--file /var/lib/xen/images/newdemo.img
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Clone a QEMU guest with multiple disks
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# virt-clone \
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--connect qemu:///system \
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--original demo \
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--name newdemo \
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--file /var/lib/xen/images/newdemo.img \
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--file /var/lib/xen/images/newdata.img
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Clone a guest to a physical device which is at least as big as the
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original guests disks. If the destination device is bigger, the
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new guest can do a filesystem resize when it boots.
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# virt-clone \
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--connect qemu:///system \
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--original demo \
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--name newdemo \
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--file /dev/HostVG/DemoVM \
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--mac 52:54:00:34:11:54
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=head1 BUGS
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Please see http://virt-manager.org/page/BugReporting
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=head1 COPYRIGHT
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Copyright (C) Fujitsu Limited, Copyright (C) Red Hat, Inc,
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and various contributors.
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This is free software. You may redistribute copies of it under the terms
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of the GNU General Public License C<http://www.gnu.org/licenses/gpl.html>.
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There is NO WARRANTY, to the extent permitted by law.
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=head1 SEE ALSO
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C<virsh(1)>, C<virt-install(1)>, C<virt-manager(1)>, the project website C<http://virt-manager.org>
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=cut
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