qcow2: Patch for shrinking qcow2 disk image
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- v5 Latest3 patches 12 repliesIn review
- v42 patches 2 repliesSuperseded
- v32 patches 3 repliesSuperseded
Earlier versions · 2
| Version | Posted | Patches | Replies | Status |
|---|---|---|---|---|
| v2 | 1 patch | 2 replies | Superseded | |
| v1 | 1 patch | 0 replies | Superseded |
Changes in v5 from the cover letter
Add qemu-iotests for qcow2 shrinking. Do some modifications based on MAX's suggestions in v4.
Patches in v5 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | qcow2: Add qcow2_shrink_l1_and_l2_table for qcow2 shrinkingblock/ block/ block/ | +218 | 7 replies | |
| 2/3 | qcow2: add update refcount table realization for update_refcountblock/ | +48 | 2 replies | |
| 3/3 | qcow2: Add qemu-iotests for qcow2 shrinkingtests/ tests/ tests/ | +90 | 1 reply |
Reviews trailers per patch
No Reviewed-by, Acked-by or Tested-by trailers for v5 yet.
Cover letter [Qemu-devel] [PATCH v5 0/3] qcow2: Patch for shrinking qcow2 disk image
v5:
Add qemu-iotests for qcow2 shrinking. Do some modifications based on MAX's suggestions in v4.
v4:
Add deal with COW clusters in l2 table. When using COW, some of (l2_entry >>s->cluster_bits) will larger than s->refcount_table_size, so need to discard this l2_entry.
v3:
Fixed host cluster leak.
In file block/qcow2.c, just using ftruncate to fix host cluster leak.
In file block/qcow2-cluster.c, just re-copy qcow2_grow_l1_table to realize qcow2_shrink_l1_and_l2_table.
In file block/qcow2-refcount.c, also update the realization to handle self-describing refcount blocks in function update_refcount.
Thanks.
Jun Li (3):
qcow2: Add qcow2_shrink_l1_and_l2_table for qcow2 shrinking
qcow2: add update refcount table realization for update_refcount
qcow2: Add qemu-iotests for qcow2 shrinking
block/qcow2-cluster.c | 182 +++++++++++++++++++++++++++++++++++++++++++++ block/qcow2-refcount.c | 49 +++++++++++- block/qcow2.c | 37 ++++++++- block/qcow2.h | 2 + tests/qemu-iotests/110 | 76 +++++++++++++++++++ tests/qemu-iotests/110.out | 13 ++++ tests/qemu-iotests/group | 1 + 7 files changed, 356 insertions(+), 4 deletions(-) create mode 100755 tests/qemu-iotests/110 create mode 100644 tests/qemu-iotests/110.out
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