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# Date Author Comment
a71835a0 02/21/2014 10:02 pm Kevin Wolf

qcow2: Set zero flag for discarded clusters

Instead of making the backing file contents visible again after a discard
request, set the zero flag if possible (i.e. on version >= 3).

Signed-off-by: Kevin Wolf <>
Reviewed-by: Eric Blake <>
1f7bf7d0 02/09/2014 10:12 am Peter Lieven

qemu-iotests: change _supported_proto to file for various tests

all these tests do anything of the following and thus fail with any
protocol other than file:
- the tests use rm, cp or mv shell commands which only work on file
- the tests use qcow2.py
- the images construct new filenames (e.g. backing file names) and...
fef9c191 09/27/2013 12:10 pm Jeff Cody

qemu-iotests: Quote $TEST_IMG* and $TEST_DIR usage

A lot of image filename and paths are used unquoted. Quote these to
make sure that directories / filenames with spaces are not problematic.

Signed-off-by: Jeff Cody <>
Reviewed-by: Stefan Hajnoczi <>...
6f749281 03/28/2013 12:52 pm Kevin Wolf

qemu-iotests: More concurrent allocation scenarios

Signed-off-by: Kevin Wolf <>
Signed-off-by: Stefan Hajnoczi <>
91d4093d 12/12/2012 01:33 pm Kevin Wolf

qemu-iotests: Test concurrent cluster allocations

This adds some first tests for qcow2's dependency handling when two
parallel write requests access the same cluster.

Signed-off-by: Kevin Wolf <>