[libvirt RFC 00/24] basic snapshot delete implementation

I'm sending it as RFC even though it's somehow completed and works, it probably needs some documentation and most likely unit testing. This implements virDomainSnapshotDelete API to support external snapshots. The support doesn't include flags VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN and VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY as it would add more complexity and IMHO these flags should not existed at all. The last patch is just here to show how we could support deleting external snapshot if all children are internal only, without this patch the user would have to call children-only and then with another call delete the external snapshot itself. There are some limitation that will be needing the mentioned documentation. If parent snapshot is internal the external snapshot cannot be deleted, workaround is to delete any internal parent snapshots and after that the external can be deleted. Pavel Hrdina (24): qemu_block: extract block commit code to separate function qemu_block: move qemuDomainBlockPivot out of qemu_driver qemu_block: extract qemuBlockCommit impl to separate function qemu_block: add sync option to qemuBlockCommitImpl qemu_monitor: introduce qemuMonitorJobFinalize qemu_monitor: allow setting autofinalize for block commit qemu_block: introduce qemuBlockFinalize qemu_blockjob: process QEMU_MONITOR_JOB_STATUS_PENDING signal qemu_snapshot: refactor qemuSnapshotDelete qemu_snapshot: extract single snapshot deletion to separate function qemu_snapshot: extract children snapshot deletion to separate function qemu_snapshot: rework snapshot children deletion qemu_snapshot: move snapshot discard out of qemu_domain.c qemu_snapshot: introduce qemuSnapshotDiscardMetadata qemu_snapshot: call qemuSnapshotDiscardMetadata from qemuSnapshotDiscard qemu_snapshot: pass update_parent into qemuSnapshotDiscardMetadata qemu_snapshot: move metadata changes to qemuSnapshotDiscardMetadata qemu_snapshot: introduce qemuSnapshotDeleteValidate function qemu_snapshot: refactor validation of snapshot delete qemu_snapshot: prepare data for external snapshot deletion qemu_snapshot: implement deletion of external snapshot qemu_snapshot: update metadata when deleting snapshots qemu_snapshot: when deleting snapshot invalidate parent snapshot qemu_snapshot: allow deletion of external snapshot with internal snapshot children src/conf/snapshot_conf.c | 5 + src/conf/snapshot_conf.h | 1 + src/qemu/qemu_backup.c | 1 + src/qemu/qemu_block.c | 356 ++++++++++++++++ src/qemu/qemu_block.h | 30 ++ src/qemu/qemu_blockjob.c | 13 +- src/qemu/qemu_blockjob.h | 1 + src/qemu/qemu_domain.c | 95 +---- src/qemu/qemu_domain.h | 9 - src/qemu/qemu_driver.c | 306 +------------- src/qemu/qemu_monitor.c | 21 +- src/qemu/qemu_monitor.h | 8 +- src/qemu/qemu_monitor_json.c | 26 +- src/qemu/qemu_monitor_json.h | 8 +- src/qemu/qemu_snapshot.c | 764 +++++++++++++++++++++++++++++++---- src/qemu/qemu_snapshot.h | 4 + tests/qemumonitorjsontest.c | 2 +- 17 files changed, 1151 insertions(+), 499 deletions(-) -- 2.37.2