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

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(-)