| Sys::Virt::DomainSnapshot(3) | User Contributed Perl Documentation | Sys::Virt::DomainSnapshot(3) |
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's configuration.
- $domss->delete($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
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.
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
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"
| 2018-10-31 | perl v5.16.3 |