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36452f12f8
This patch moves ret assignment after reporting original error. We were lucky to pass qemu-iotests 048 (qemu-img compare case) but when I tried to run with TEST_DIR=/tmp (tmpfs), it fails with a "wrong" mismatch offset. This fixes two bugs. In the first if branch, setting ret to 1 before using it makes dead code in the next line: pnum is never added to mismatch offset even if ret was 0. In the other if branch, currently the output error is always -4: strerror(-4) -> Unknown error -4 Added regression test in case 048. Signed-off-by: Fam Zheng <famz@redhat.com> Signed-off-by: Amos Kong <akong@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com>
57 lines
2.2 KiB
Plaintext
57 lines
2.2 KiB
Plaintext
QA output created by 048
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
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=== IO: pattern 45
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qemu-io> wrote 4096/4096 bytes at offset 524288
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> wrote 4096/4096 bytes at offset 528384
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> wrote 4096/4096 bytes at offset 532480
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> wrote 4096/4096 bytes at offset 536576
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> Images are identical.
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0
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0
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Image resized.
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Warning: Image size mismatch!
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Images are identical.
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0
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Strict mode: Image size mismatch!
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1
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=== IO: pattern 67
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qemu-io> wrote 4096/4096 bytes at offset 1228800
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> Content mismatch at offset 1228800!
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1
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=== IO: pattern 123
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qemu-io> wrote 4096/4096 bytes at offset 0
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> Content mismatch at offset 0!
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1
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
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=== IO: pattern 100
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qemu-io> wrote 512/512 bytes at offset 0
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512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> === IO: pattern 101
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qemu-io> wrote 512/512 bytes at offset 512
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512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> Content mismatch at offset 512!
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1
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
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=== IO: pattern 102
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qemu-io> wrote 512/512 bytes at offset 512
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512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> qemu-img: Error while reading offset 0 of blkdebug:TEST_DIR/blkdebug.conf:TEST_DIR/t.IMGFMT: Input/output error
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qemu-img: Error while reading offset 0: Input/output error
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4
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824
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Formatting 'TEST_DIR/t.IMGFMT.2', fmt=IMGFMT size=0
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=== IO: pattern 102
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qemu-io> wrote 512/512 bytes at offset 512
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512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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qemu-io> qemu-img: Error while reading offset 0 of blkdebug:TEST_DIR/blkdebug.conf:TEST_DIR/t.IMGFMT: Input/output error
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qemu-img: Error while reading offset 0 of blkdebug:TEST_DIR/blkdebug.conf:TEST_DIR/t.IMGFMT: Input/output error
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Warning: Image size mismatch!
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4
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Cleanup
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