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block: Fail gracefully when using a format driver on protocol level

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Specifying the wrong driver could fail an assertion:

$ qemu-system-x86_64 -drive file.driver=qcow2,file=x
qemu-system-x86_64: block.c:721: bdrv_open_common: Assertion `file !=
((void *)0)' failed.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2013-04-09 13:19:18 +02:00
parent bdda92324d
commit 2af5ef70af
3 changed files with 24 additions and 0 deletions
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7
tests/qemu-iotests/051
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@ -142,6 +142,13 @@ run_qemu -drive media=cdrom,cache=writethrough
run_qemu -drive media=cdrom,cache=unsafe
run_qemu -drive media=cdrom,cache=invalid_value
echo
echo === Specifying the protocol layer ===
echo
run_qemu -drive file=$TEST_IMG,file.driver=file
run_qemu -drive file=$TEST_IMG,file.driver=qcow2
# success, all done
echo "*** done"
rm -f $seq.full