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Diffstat (limited to 'tests/qemu-iotests/060')
| -rwxr-xr-x | tests/qemu-iotests/060 | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/tests/qemu-iotests/060 b/tests/qemu-iotests/060 index 44141f6243..c230696b3a 100755 --- a/tests/qemu-iotests/060 +++ b/tests/qemu-iotests/060 @@ -359,6 +359,52 @@ echo '--- Repairing ---' _check_test_img -q -r all _check_test_img -r all +echo +echo "=== Discarding an out-of-bounds refblock ===" +echo + +_make_test_img 64M + +# Pretend there's a refblock really up high +poke_file "$TEST_IMG" "$(($rt_offset+8))" "\x00\xff\xff\xff\x00\x00\x00\x00" +# Let's try to shrink the qcow2 image so that the block driver tries +# to discard that refblock (and see what happens!) +$QEMU_IMG resize --shrink "$TEST_IMG" 32M + +echo '--- Checking and retrying ---' +# Image should not be resized +_img_info | grep 'virtual size' +# But it should pass this check, because the "partial" resize has +# already overwritten refblocks past the end +_check_test_img -r all +# So let's try again +$QEMU_IMG resize --shrink "$TEST_IMG" 32M +_img_info | grep 'virtual size' + +echo +echo "=== Discarding a non-covered in-bounds refblock ===" +echo + +IMGOPTS='refcount_bits=1' _make_test_img 64M + +# Pretend there's a refblock somewhere where there is no refblock to +# cover it (but the covering refblock has a valid index in the +# reftable) +# Every refblock covers 65536 * 8 * 65536 = 32 GB, so we have to point +# to 0x10_0000_0000 (64G) to point to the third refblock +poke_file "$TEST_IMG" "$(($rt_offset+8))" "\x00\x00\x00\x10\x00\x00\x00\x00" +$QEMU_IMG resize --shrink "$TEST_IMG" 32M + +echo '--- Checking and retrying ---' +# Image should not be resized +_img_info | grep 'virtual size' +# But it should pass this check, because the "partial" resize has +# already overwritten refblocks past the end +_check_test_img -r all +# So let's try again +$QEMU_IMG resize --shrink "$TEST_IMG" 32M +_img_info | grep 'virtual size' + # success, all done echo "*** done" rm -f $seq.full |