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[Qemu-devel] [PATCH v6 0/6] minor qcow2 compression improvements
From: |
Eric Blake |
Subject: |
[Qemu-devel] [PATCH v6 0/6] minor qcow2 compression improvements |
Date: |
Wed, 25 Apr 2018 21:51:23 -0500 |
Even though v5 was posted earlier today, it was worth a respin:
- 2/6: add R-b [Berto]
- 4/6, 6/6: improve commit messages [Max]
- 5/6: new patch, with an iotests proving that 4/6 is a bug fix [Max]
The new test is rather slow (nearly 90 seconds for me using
tmpfs) unless it skips entirely (such as testing on ext4); ideas
for speeding it up are welcome (translation: maybe qemu should
optimize the search for the next available cluster to allocate,
and/or qemu-img check should be faster at reporting leaked
clusters)
001/6:[----] [--] 'qcow2: Prefer byte-based calls into bs->file'
002/6:[----] [--] 'qcow2: Document some maximum size constraints'
003/6:[----] [--] 'qcow2: Reduce REFT_OFFSET_MASK'
004/6:[----] [--] 'qcow2: Don't allow overflow during cluster allocation'
005/6:[down] 'iotests: Add new test 214 for max compressed cluster offset'
006/6:[----] [--] 'qcow2: Avoid memory over-allocation on compressed images'
Eric Blake (6):
qcow2: Prefer byte-based calls into bs->file
qcow2: Document some maximum size constraints
qcow2: Reduce REFT_OFFSET_MASK
qcow2: Don't allow overflow during cluster allocation
iotests: Add new test 214 for max compressed cluster offset
qcow2: Avoid memory over-allocation on compressed images
docs/interop/qcow2.txt | 40 +++++++++++++++++--
block/qcow2.h | 8 +++-
block/qcow2-cluster.c | 32 +++++++++------
block/qcow2-refcount.c | 27 ++++++++-----
block/qcow2.c | 2 +-
tests/qemu-iotests/214 | 97 ++++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/214.out | 54 ++++++++++++++++++++++++++
tests/qemu-iotests/group | 1 +
8 files changed, 234 insertions(+), 27 deletions(-)
create mode 100755 tests/qemu-iotests/214
create mode 100644 tests/qemu-iotests/214.out
--
2.14.3
- [Qemu-devel] [PATCH v6 0/6] minor qcow2 compression improvements,
Eric Blake <=
- [Qemu-devel] [PATCH v6 4/6] qcow2: Don't allow overflow during cluster allocation, Eric Blake, 2018/04/25
- [Qemu-devel] [PATCH v6 6/6] qcow2: Avoid memory over-allocation on compressed images, Eric Blake, 2018/04/25
- [Qemu-devel] [PATCH v6 3/6] qcow2: Reduce REFT_OFFSET_MASK, Eric Blake, 2018/04/25
- [Qemu-devel] [PATCH v6 5/6] iotests: Add new test 214 for max compressed cluster offset, Eric Blake, 2018/04/25
- [Qemu-devel] [PATCH v6 1/6] qcow2: Prefer byte-based calls into bs->file, Eric Blake, 2018/04/25
- [Qemu-devel] [PATCH v6 2/6] qcow2: Document some maximum size constraints, Eric Blake, 2018/04/25