NAME

       Sys::Virt::DomainSnapshot - Represent & manage a libvirt guest domain

DESCRIPTION

       The "Sys::Virt::DomainSnapshot" module represents a guest domain managed by the virtual
       machine monitor.

METHODS

       my $str = $domss->get_name()
           Return the name of the snapshot

       my $xml = $domss->get_xml_description($flags)
           Returns an XML document containing a complete description of the domain snapshot's
           configuration. The $flags parameter accepts the following constants

           Sys::Virt::DomainSnapshot::XML_SECURE
               Include security sensitive information in the XML dump, such as passwords.

       $domss->delete($flags)
           Deletes this snapshot object & its data. The optional $flags parameter controls what
           should be deleted via the "Sys::Virt::DomainSnapshot::DELETE_*" constants.

       $domss->revert_to($flags)
           Revert the domain to the state associated with this snapshot. The optional $flags
           control the state of the VM after the revert via the
           "Sys::Virt::DomainSnapshot::REVERT_*" constants.

       $parentss = $domss->get_parent();
           Return the parent of the snapshot, if any

       $res = $domss->is_current()
           Returns a true value if this is the current snapshot. False otherwise.

       $res = $domss->has_metadata()
           Returns a true value if this snapshot has metadata associated with it.

       $count = $domss->num_of_child_snapshots()
           Return the number of saved snapshots which are children of this snapshot

       @names = $domss->list_child_snapshot_names()
           List the names of all saved snapshots which are children of this snapshot . The names
           can be used with the "lookup_snapshot_by_name"

       @snapshots = $domss->list_child_snapshots()
           Return a list of all snapshots that are children of this snapshot. The elements in the
           returned list are instances of the Sys::Virt::DomainSnapshot class.  This method
           requires O(n) RPC calls, so the "list_all_children" method is recommended as a more
           efficient alternative.

       my @snapshots = $domss->list_all_children($flags)
           Return a list of all domain snapshots that are children of this snapshot. The elements
           in the returned list are instances of the Sys::Virt::DomainSnapshot class. The $flags
           parameter can be used to filter the list of return domain snapshots.

CONSTANTS

   SNAPSHOT CREATION
       The following constants are useful when creating snapshots

       Sys::Virt::DomainSnapshot::CREATE_CURRENT
           Set the defined snapshot to be the current snapshot

       Sys::Virt::DomainSnapshot::CREATE_DISK_ONLY
           Only snapshot the disk, not the memory state

       Sys::Virt::DomainSnapshot::CREATE_HALT
           Stop the guest after creating the snapshot

       Sys::Virt::DomainSnapshot::CREATE_NO_METADATA
           Do not save any metadata for the snapshot

       Sys::Virt::DomainSnapshot::CREATE_REDEFINE
           Replace/set the metadata with the snapshot

       Sys::Virt::DomainSnapshot::CREATE_QUIESCE
           Quiesce the guest disks while taking the snapshot

       Sys::Virt::DomainSnapshot::CREATE_REUSE_EXT
           Reuse the existing snapshot data files (if any)

       Sys::Virt::DomainSnapshot::CREATE_ATOMIC
           Create multiple disk snapshots atomically

       Sys::Virt::DomainSnapshot::CREATE_LIVE
           Create snapshot while the guest is running

       Sys::Virt::DomainSnapshot::CREATE_VALIDATE
           Validate the XML document against the schema

   SNAPSHOT DELETION
       The following constants are useful when deleting snapshots

       Sys::Virt::DomainSnapshot::DELETE_CHILDREN
           Recursively delete any child snapshots

       Sys::Virt::DomainSnapshot::DELETE_CHILDREN_ONLY
           Only delete the child snapshots

       Sys::Virt::DomainSnapshot::DELETE_METADATA_ONLY
           Only delete the snapshot metadata

   SNAPSHOT LIST
       The following constants are useful when listing snapshots

       Sys::Virt::DomainSnapshot::LIST_METADATA
           Only list snapshots which have metadata

       Sys::Virt::DomainSnapshot::LIST_ROOTS
           Only list snapshots which are root nodes in the tree

       Sys::Virt::DomainSnapshot::LIST_DESCENDANTS
           Only list snapshots which are descendants of the current snapshot

       Sys::Virt::DomainSnapshot::LIST_LEAVES
           Only list leaf nodes in the snapshot tree

       Sys::Virt::DomainSnapshot::LIST_NO_LEAVES
           Only list non-leaf nodes in the snapshot tree

       Sys::Virt::DomainSnapshot::LIST_NO_METADATA
           Only list snapshots without metadata

       Sys::Virt::DomainSnapshot::LIST_ACTIVE
           Only list snapshots taken while the guest was running

       Sys::Virt::DomainSnapshot::LIST_INACTIVE
           Only list snapshots taken while the guest was inactive

       Sys::Virt::DomainSnapshot::LIST_EXTERNAL
           Only list snapshots stored in external disk images

       Sys::Virt::DomainSnapshot::LIST_INTERNAL
           Only list snapshots stored in internal disk images

       Sys::Virt::DomainSnapshot::LIST_DISK_ONLY
           Only list snapshots taken while the guest was running, which did not include memory
           state.

       Sys::Virt::DomainSnapshot::LIST_TOPOLOGICAL
           Sort list in topological order wrt to parent/child relationships.

   SNAPSHOT REVERT
       The following constants are useful when reverting snapshots

       Sys::Virt::DomainSnapshot::REVERT_PAUSED
           Leave the guest CPUs paused after reverting to the snapshot state

       Sys::Virt::DomainSnapshot::REVERT_RUNNING
           Start the guest CPUs after reverting to the snapshot state

       Sys::Virt::DomainSnapshot::REVERT_FORCE
           Force the snapshot to revert, even if it is risky to do so

       Sys::Virt::DomainSnapshot::REVERT_RESET_NVRAM
           Reset the firmware NVRAM state from its original template

AUTHORS

       Daniel P. Berrange <berrange@redhat.com>

COPYRIGHT

       Copyright (C) 2006 Red Hat Copyright (C) 2006-2007 Daniel P. Berrange

LICENSE

       This program is free software; you can redistribute it and/or modify it under the terms of
       either 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), or, the Artistic License,
       as specified in the Perl README file.

SEE ALSO

       Sys::Virt, Sys::Virt::Error, "http://libvirt.org"