[libvirt] [RFC PATCH 00/16] qemu: checkpoint: Add support for deleting checkpoints accross snapshots

Posted as RFC because qemu probably doesn't reopen backing images for bitmap operations resulting in: $ virsh checkpoint-delete vm --checkpointname a error: Failed to delete checkpoint a error: internal error: unable to execute QEMU command 'transaction': Bitmap 'a' is readonly and cannot be modified Unfortunately this can't be done manually because 'blockdev-reopen' is still experimental. Peter Krempa (16): qemu: checkpoint: Store whether deleted checkpoint is current in a variable qemu: checkpoint: split out checkpoint deletion bitmaps qemu: checkpoint: rename disk->chkdisk in qemuCheckpointDiscardBitmaps qemu: checkpoint: rename disk->chkdisk in qemuCheckpointAddActions qemu: checkpoint: Use disk definition directly when creating checkpoint qemu: checkpoint: tolerate missing disks on checkpoint deletion qemu: domain: Remove unused qemuDomainDiskNodeFormatLookup qemu: checkpoint: Introduce helper to find checkpoint disk definition in parents qemu: checkpoint: Extract calculation of bitmap merging for checkpoint deletion tests: qemublock: Add test for checkpoint deletion bitmap merge tests: qemublock: Add few more test cases for checkpoint deletion tests: qemublock: Add synthetic snapshot+checkpoint test data qemu: checkpoint: Introduce support for deleting checkpoints accross snapshots tests: qemublock: Add checkpoint deletion test for deep backing chain tests: qemublock: Add checkpoint deletion tests for some special cases qemu: checkpoint: Track and relabel images for bitmap merging src/qemu/qemu_checkpoint.c | 329 +++++-- src/qemu/qemu_checkpoint.h | 9 + src/qemu/qemu_domain.c | 14 - src/qemu/qemu_domain.h | 3 - tests/qemublocktest.c | 102 +++ .../snapshots-synthetic-checkpoint.json | 827 ++++++++++++++++++ .../bitmap/snapshots-synthetic-checkpoint.out | 13 + .../checkpointdelete/basic-current-out.json | 29 + .../basic-intermediate1-out.json | 22 + .../basic-intermediate2-out.json | 22 + .../basic-intermediate3-out.json | 22 + .../checkpointdelete/basic-noparent-out.json | 9 + .../snapshots-current-out.json | 29 + .../snapshots-intermediate1-out.json | 24 + .../snapshots-intermediate2-out.json | 62 ++ .../snapshots-intermediate3-out.json | 61 ++ .../snapshots-noparent-out.json | 27 + ...hots-synthetic-checkpoint-current-out.json | 29 + ...ynthetic-checkpoint-intermediate1-out.json | 31 + ...ynthetic-checkpoint-intermediate2-out.json | 34 + ...ynthetic-checkpoint-intermediate3-out.json | 61 ++ ...ots-synthetic-checkpoint-noparent-out.json | 27 + 22 files changed, 1680 insertions(+), 106 deletions(-) create mode 100644 tests/qemublocktestdata/bitmap/snapshots-synthetic-checkpoint.json create mode 100644 tests/qemublocktestdata/bitmap/snapshots-synthetic-checkpoint.out create mode 100644 tests/qemublocktestdata/checkpointdelete/basic-current-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/basic-intermediate1-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/basic-intermediate2-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/basic-intermediate3-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/basic-noparent-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-current-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-intermediate1-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-intermediate2-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-intermediate3-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-noparent-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-synthetic-checkpoint-current-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-synthetic-checkpoint-intermediate1-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-synthetic-checkpoint-intermediate2-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-synthetic-checkpoint-intermediate3-out.json create mode 100644 tests/qemublocktestdata/checkpointdelete/snapshots-synthetic-checkpoint-noparent-out.json -- 2.24.1