[libvirt] [PATCHv3 06/43] snapshot: track current snapshot across restarts

[Daniel P. Berrange]

On Wed, Aug 24, 2011 at 09:22:23AM -0600, Eric Blake wrote:
> Audit all changes to the qemu vm->current_snapshot, and make them
> update the saved xml file for both the previous and the new
> snapshot, so that there is always at most one snapshot with
> <active>1</active> in the xml, and that snapshot is used as the
> current snapshot even across libvirtd restarts.
> 
> * src/conf/domain_conf.h (_virDomainSnapshotDef): Alter member
> type and name.
> * src/conf/domain_conf.c (virDomainSnapshotDefParseString)
> (virDomainSnapshotDefFormat): Update clients.
> * docs/schemas/domainsnapshot.rng: Tighten rng.
> * src/qemu/qemu_driver.c (qemuDomainSnapshotLoad): Reload current
> snapshot.
> (qemuDomainSnapshotCreateXML, qemuDomainRevertToSnapshot)
> (qemuDomainSnapshotDiscard): Track current snapshot.
> ---
>  docs/schemas/domainsnapshot.rng |    5 ++-
>  src/conf/domain_conf.c          |    6 ++-
>  src/conf/domain_conf.h          |    4 +-
>  src/qemu/qemu_driver.c          |   81 +++++++++++++++++++++++++++++----------
>  4 files changed, 72 insertions(+), 24 deletions(-)

ACK

Daniel
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