qemu-iotests: Add _default_cache_mode and _supported_cache_modes
This replaces _unsupported_qemu_io_options and check for support of current cache mode, and allow to provide a default if user didn't specify. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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@ -44,7 +44,8 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
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_supported_fmt qcow2
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_supported_proto generic
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_supported_os Linux
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_default_cache_mode "writethrough"
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_supported_cache_modes "writethrough" "none"
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echo "Errors while writing 128 kB"
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echo
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@ -44,7 +44,8 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
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_supported_fmt qcow2
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_supported_proto generic
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_supported_os Linux
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_unsupported_qemu_io_options --nocache
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_default_cache_mode "writethrough"
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_supported_cache_modes "writethrough"
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size=128M
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@ -41,8 +41,8 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
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_supported_fmt generic
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_supported_proto generic
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_supported_os Linux
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_unsupported_qemu_io_options --nocache
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_default_cache_mode "writethrough"
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_supported_cache_modes "writethrough"
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size=128M
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_make_test_img $size
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@ -387,18 +387,23 @@ _supported_os()
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_notrun "not suitable for this OS: $HOSTOS"
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}
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_unsupported_qemu_io_options()
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_supported_cache_modes()
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{
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for bad_opt
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do
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for opt in $QEMU_IO_OPTIONS
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do
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if [ "$bad_opt" = "$opt" ]
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then
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_notrun "not suitable for qemu-io option: $bad_opt"
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for mode; do
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if [ "$mode" = "$CACHEMODE" ]; then
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return
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fi
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done
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done
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_notrun "not suitable for cache mode: $CACHEMODE"
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}
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_default_cache_mode()
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{
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if $CACHEMODE_IS_DEFAULT; then
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CACHEMODE="$1"
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QEMU_IO="$QEMU_IO --cache $1"
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return
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fi
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}
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# this test requires that a specified command (executable) exists
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