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[Qemu-devel] [PATCH 0/4] qemu-img: support compression regardless of clu
From: |
Stefan Hajnoczi |
Subject: |
[Qemu-devel] [PATCH 0/4] qemu-img: support compression regardless of cluster size |
Date: |
Mon, 15 Apr 2013 17:17:30 +0200 |
It was hard to find a short email subject line. Anyway, the problem is that
qemu-img convert -c fails with the following error message if the input image
length is not a multiple of the output cluster size:
qemu-img: error while compressing sector 0: Input/output error
Ilkka Tengvall <address@hidden> reported the failure. kwolf and
eblake suggested a fix which this patch series implements.
qemu-img convert -c succeeds with these patches applied.
The final patch adds qemu-iotests case 053 to protect against regressions.
Stefan Hajnoczi (4):
qcow2: allow sub-cluster compressed write to last cluster
qcow: allow sub-cluster compressed write to last cluster
qemu-img: do not zero-pad the compressed write buffer
qemu-iotests: add 053 unaligned compressed image size test
block/qcow.c | 17 +++++++++++--
block/qcow2.c | 17 +++++++++++--
qemu-img.c | 8 ++----
tests/qemu-iotests/053 | 63 ++++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/053.out | 10 ++++++++
tests/qemu-iotests/group | 1 +
6 files changed, 106 insertions(+), 10 deletions(-)
create mode 100755 tests/qemu-iotests/053
create mode 100644 tests/qemu-iotests/053.out
--
1.8.1.4