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[RFC PATCH v2 00/26] Add subcluster allocation to qcow2
From: |
Alberto Garcia |
Subject: |
[RFC PATCH v2 00/26] Add subcluster allocation to qcow2 |
Date: |
Sun, 27 Oct 2019 00:25:02 +0300 |
Hi,
here's the new version of the patches to add subcluster allocation
support to qcow2.
Please refer to the cover letter of the first version for a full
description of the patches:
https://lists.gnu.org/archive/html/qemu-block/2019-10/msg00983.html
This version includes a few tests, but I'm planning to add more for
the next revision.
Berto
v2:
- Patch 12: Update after the changes in 88f468e546.
- Patch 21 (new): Clear the L2 bitmap when allocating a compressed
cluster. Compressed clusters should have the bitmap all set to 0.
- Patch 24: Document the new fields in the QAPI documentation [Eric].
- Patch 25: Allow qcow2 preallocation with backing files.
- Patch 26: Add some tests for qcow2 images with extended L2 entries.
v1: https://lists.gnu.org/archive/html/qemu-block/2019-10/msg00983.html
Output of git backport-diff against v1:
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
001/26:[----] [-C] 'qcow2: Add calculate_l2_meta()'
002/26:[----] [--] 'qcow2: Split cluster_needs_cow() out of
count_cow_clusters()'
003/26:[----] [--] 'qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in
handle_copied()'
004/26:[----] [--] 'qcow2: Add get_l2_entry() and set_l2_entry()'
005/26:[----] [--] 'qcow2: Document the Extended L2 Entries feature'
006/26:[----] [--] 'qcow2: Add dummy has_subclusters() function'
007/26:[----] [--] 'qcow2: Add subcluster-related fields to BDRVQcow2State'
008/26:[----] [--] 'qcow2: Add offset_to_sc_index()'
009/26:[----] [--] 'qcow2: Add l2_entry_size()'
010/26:[----] [--] 'qcow2: Update get/set_l2_entry() and add
get/set_l2_bitmap()'
011/26:[----] [--] 'qcow2: Add qcow2_get_subcluster_type()'
012/26:[0005] [FC] 'qcow2: Handle QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER'
013/26:[----] [--] 'qcow2: Add subcluster support to calculate_l2_meta()'
014/26:[----] [--] 'qcow2: Add subcluster support to qcow2_get_cluster_offset()'
015/26:[----] [--] 'qcow2: Add subcluster support to zero_in_l2_slice()'
016/26:[----] [--] 'qcow2: Add subcluster support to discard_in_l2_slice()'
017/26:[----] [--] 'qcow2: Add subcluster support to check_refcounts_l2()'
018/26:[----] [--] 'qcow2: Add subcluster support to
expand_zero_clusters_in_l1()'
019/26:[----] [--] 'qcow2: Fix offset calculation in handle_dependencies()'
020/26:[----] [--] 'qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2()'
021/26:[down] 'qcow2: Clear the L2 bitmap when allocating a compressed cluster'
022/26:[----] [--] 'qcow2: Add subcluster support to handle_alloc_space()'
023/26:[----] [--] 'qcow2: Restrict qcow2_co_pwrite_zeroes() to full clusters
only'
024/26:[0007] [FC] 'qcow2: Add the 'extended_l2' option and the
QCOW2_INCOMPAT_EXTL2 bit'
025/26:[down] 'qcow2: Allow preallocation and backing files if extended_l2 is
set'
026/26:[down] 'iotests: Add tests for qcow2 images with extended L2 entries'
Alberto Garcia (26):
qcow2: Add calculate_l2_meta()
qcow2: Split cluster_needs_cow() out of count_cow_clusters()
qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied()
qcow2: Add get_l2_entry() and set_l2_entry()
qcow2: Document the Extended L2 Entries feature
qcow2: Add dummy has_subclusters() function
qcow2: Add subcluster-related fields to BDRVQcow2State
qcow2: Add offset_to_sc_index()
qcow2: Add l2_entry_size()
qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap()
qcow2: Add qcow2_get_subcluster_type()
qcow2: Handle QCOW2_CLUSTER_UNALLOCATED_SUBCLUSTER
qcow2: Add subcluster support to calculate_l2_meta()
qcow2: Add subcluster support to qcow2_get_cluster_offset()
qcow2: Add subcluster support to zero_in_l2_slice()
qcow2: Add subcluster support to discard_in_l2_slice()
qcow2: Add subcluster support to check_refcounts_l2()
qcow2: Add subcluster support to expand_zero_clusters_in_l1()
qcow2: Fix offset calculation in handle_dependencies()
qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2()
qcow2: Clear the L2 bitmap when allocating a compressed cluster
qcow2: Add subcluster support to handle_alloc_space()
qcow2: Restrict qcow2_co_pwrite_zeroes() to full clusters only
qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit
qcow2: Allow preallocation and backing files if extended_l2 is set
iotests: Add tests for qcow2 images with extended L2 entries
block/qcow2-cluster.c | 548 ++++++++++++++++++++-----------
block/qcow2-refcount.c | 38 ++-
block/qcow2.c | 92 +++++-
block/qcow2.h | 121 ++++++-
docs/interop/qcow2.txt | 68 +++-
docs/qcow2-cache.txt | 19 +-
include/block/block_int.h | 1 +
qapi/block-core.json | 6 +
tests/qemu-iotests/031.out | 8 +-
tests/qemu-iotests/036.out | 4 +-
tests/qemu-iotests/049.out | 102 +++---
tests/qemu-iotests/060.out | 1 +
tests/qemu-iotests/061.out | 20 +-
tests/qemu-iotests/065 | 18 +-
tests/qemu-iotests/082.out | 48 ++-
tests/qemu-iotests/085.out | 38 +--
tests/qemu-iotests/144.out | 4 +-
tests/qemu-iotests/182.out | 2 +-
tests/qemu-iotests/185.out | 8 +-
tests/qemu-iotests/198.out | 2 +
tests/qemu-iotests/206.out | 6 +-
tests/qemu-iotests/242.out | 5 +
tests/qemu-iotests/255.out | 8 +-
tests/qemu-iotests/271 | 235 +++++++++++++
tests/qemu-iotests/271.out | 183 +++++++++++
tests/qemu-iotests/common.filter | 1 +
tests/qemu-iotests/group | 1 +
27 files changed, 1247 insertions(+), 340 deletions(-)
create mode 100755 tests/qemu-iotests/271
create mode 100644 tests/qemu-iotests/271.out
--
2.20.1
- [RFC PATCH v2 00/26] Add subcluster allocation to qcow2,
Alberto Garcia <=
- [RFC PATCH v2 16/26] qcow2: Add subcluster support to discard_in_l2_slice(), Alberto Garcia, 2019/10/26
- [RFC PATCH v2 01/26] qcow2: Add calculate_l2_meta(), Alberto Garcia, 2019/10/26
- [RFC PATCH v2 25/26] qcow2: Allow preallocation and backing files if extended_l2 is set, Alberto Garcia, 2019/10/26
- [RFC PATCH v2 13/26] qcow2: Add subcluster support to calculate_l2_meta(), Alberto Garcia, 2019/10/26
- [RFC PATCH v2 21/26] qcow2: Clear the L2 bitmap when allocating a compressed cluster, Alberto Garcia, 2019/10/26
- [RFC PATCH v2 08/26] qcow2: Add offset_to_sc_index(), Alberto Garcia, 2019/10/26