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iotests: Prepare for refcount_bits option

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Some tests do not work well with certain refcount widths (i.e. you
cannot create internal snapshots with refcount_bits=1), so make those
widths unsupported.

Furthermore, add another filter to _filter_img_create in common.filter
which filters out the refcount_bits value.

This is necessary for test 079, which does actually work with any
refcount width, but invoking qemu-img directly leads to the
refcount_bits value being visible in the output; use _make_test_img
instead which will filter it out.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2015-02-18 17:40:48 -05:00 • committed by Kevin Wolf
parent 8a17b83cc3
commit 5262caa754
13 changed files with 41 additions and 37 deletions
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3
tests/qemu-iotests/007
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@ -43,6 +43,9 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
_supported_fmt qcow2
_supported_proto generic
_supported_os Linux
# refcount_bits must be at least 4 so we can create ten internal snapshots
# (1 bit supports none, 2 bits support two, 4 bits support 14)
_unsupported_imgopts 'refcount_bits=\(1\|2\)[^0-9]'
echo
echo "creating image"