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| author | Kevin Wolf <kwolf@redhat.com> | 2014-03-26 13:06:03 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-04-01 15:22:35 +0200 |
| commit | 6b7d4c55586a849aa8313282d79432917eade3bf (patch) | |
| tree | 3943ce5cd33c4c8f11c410d43e4601601e5ff2b5 /tests | |
| parent | 8f4754ede56e3f9ea3fd7207f4a7c4453e59285b (diff) | |
| download | qemu-6b7d4c55586a849aa8313282d79432917eade3bf.tar.gz qemu-6b7d4c55586a849aa8313282d79432917eade3bf.tar.bz2 qemu-6b7d4c55586a849aa8313282d79432917eade3bf.zip | |
qcow2: Fix copy_sectors() with VM state
bs->total_sectors is not the highest possible sector number that could
be involved in a copy on write operation: VM state is after the end of
the virtual disk. This resulted in wrong values for the number of
sectors to be copied (n).
The code that checks for the end of the image isn't required any more
because the code hasn't been calling the block layer's bdrv_read() for a
long time; instead, it directly calls qcow2_readv(), which doesn't error
out on VM state sector numbers.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'tests')
| -rwxr-xr-x | tests/qemu-iotests/029 | 22 | ||||
| -rw-r--r-- | tests/qemu-iotests/029.out | 13 |
2 files changed, 33 insertions, 2 deletions
diff --git a/tests/qemu-iotests/029 b/tests/qemu-iotests/029 index b424726fc4..567e07160c 100755 --- a/tests/qemu-iotests/029 +++ b/tests/qemu-iotests/029 @@ -1,7 +1,6 @@ #!/bin/bash # -# Test loading internal snapshots where the L1 table of the snapshot -# is smaller than the current L1 table. +# qcow2 internal snapshots/VM state tests # # Copyright (C) 2011 Red Hat, Inc. # @@ -45,6 +44,11 @@ _supported_fmt qcow2 _supported_proto generic _supported_os Linux +echo +echo Test loading internal snapshots where the L1 table of the snapshot +echo is smaller than the current L1 table. +echo + CLUSTER_SIZE=65536 _make_test_img 64M $QEMU_IMG snapshot -c foo "$TEST_IMG" @@ -59,6 +63,20 @@ $QEMU_IO -c 'write -b 0 4M' "$TEST_IMG" | _filter_qemu_io $QEMU_IMG snapshot -a foo "$TEST_IMG" _check_test_img + +echo +echo Try using a huge VM state +echo + +CLUSTER_SIZE=65536 +_make_test_img 64M +{ $QEMU_IO -c "write -b -P 0x11 1T 4k" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir +{ $QEMU_IMG snapshot -c foo $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir +{ $QEMU_IMG snapshot -a foo $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir +{ $QEMU_IO -c "read -b -P 0x11 1T 4k" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir +_check_test_img + + # success, all done echo "*** done" rm -f $seq.full diff --git a/tests/qemu-iotests/029.out b/tests/qemu-iotests/029.out index 0eedb3a3ab..9029698a1c 100644 --- a/tests/qemu-iotests/029.out +++ b/tests/qemu-iotests/029.out @@ -1,4 +1,8 @@ QA output created by 029 + +Test loading internal snapshots where the L1 table of the snapshot +is smaller than the current L1 table. + Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 wrote 4096/4096 bytes at offset 0 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) @@ -7,4 +11,13 @@ Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=16777216 wrote 4194304/4194304 bytes at offset 0 4 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) No errors were found on the image. + +Try using a huge VM state + +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 +wrote 4096/4096 bytes at offset 1099511627776 +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 4096/4096 bytes at offset 1099511627776 +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +No errors were found on the image. *** done |