RFC v1: https://lists.nongnu.org/archive/html/qemu-block/2020-05/msg00912.html RFC v2: https://lists.nongnu.org/archive/html/qemu-block/2020-05/msg00915.html v1: https://lists.nongnu.org/archive/html/qemu-devel/2020-06/msg09792.html v2: https://lists.nongnu.org/archive/html/qemu-block/2020-07/msg01179.html v3: https://lists.nongnu.org/archive/html/qemu-block/2020-07/msg01385.html v4: https://lists.nongnu.org/archive/html/qemu-block/2020-08/msg00566.html
Branch: https://github.com/XanClic/qemu.git migration-bitmap-mapping-v5 Branch: https://git.xanclic.moe/XanClic/qemu.git migration-bitmap-mapping-v5 Hi, This new migration parameter allows mapping block node names and bitmap names to aliases for the purpose of block dirty bitmap migration. This way, management tools can use different node names on the source and destination and pass the mapping of how bitmaps are to be transferred to qemu (on the source, the destination, or even both with arbitrary aliases in the migration stream). v5: - Patch 1: - QAPI documentation: On the destination, unmapped aliases are not just reported and that’s it – encountering one will actually lead to the whole rest of the bitmap migration data being discarded. - Use sizeof_field instead of hand-coding it - %s/255/UINT8_MAX/ - s/Unable to read bitmap name string/ Unable to read bitmap alias string/ - Cancellation on unknown incoming bitmap aliases was handled improperly; it should be handled properly now - Old patch 2: Dropped - Patch 3 (was 4): Use discards instead of writes to dirty the bitmap git-backport-diff against v4: Key: [----] : patches are identical [####] : number of functional differences between upstream/downstream patch [down] : patch is downstream-only The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively 001/3:[0040] [FC] 'migration: Add block-bitmap-mapping parameter' 002/3:[----] [--] 'iotests.py: Let wait_migration() return on failure' 003/3:[0002] [FC] 'iotests: Test node/bitmap aliases during migration' Max Reitz (3): migration: Add block-bitmap-mapping parameter iotests.py: Let wait_migration() return on failure iotests: Test node/bitmap aliases during migration qapi/migration.json | 104 +++++- migration/migration.h | 3 + migration/block-dirty-bitmap.c | 412 ++++++++++++++++++++--- migration/migration.c | 30 ++ monitor/hmp-cmds.c | 30 ++ tests/qemu-iotests/300 | 595 +++++++++++++++++++++++++++++++++ tests/qemu-iotests/300.out | 5 + tests/qemu-iotests/group | 1 + tests/qemu-iotests/iotests.py | 18 +- 9 files changed, 1135 insertions(+), 63 deletions(-) create mode 100755 tests/qemu-iotests/300 create mode 100644 tests/qemu-iotests/300.out -- 2.26.2