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3c0c7bfeba92c4de83410629b6a5378c4189d9d6
qemu/tests/qemu-iotests/083.out
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Marc-André Lureau 3c0c7bfeba qemu-io: propagate errors through Error API instead of printf 
Convert the qemu-io command infrastructure to use QEMU's Error API
(Error **errp) for error propagation instead of printing directly to
stdout/stderr via printf/fprintf.

The cfunc_t typedef, all ~35 command functions, the dispatcher chain
(command/init_check_command/qemuio_command), and helper functions
(parse_pattern, create_iovec, qemu_io_alloc_from_file) all gain an
Error **errp parameter. Async completion callbacks (aio_read_done,
aio_write_done, aio_discard_done) use error_report() since they have
no Error path back to the caller.

Update tests:
- error_report_err() prepends qemu-io: prefix
- copy-before-write: check the HMP return value, rather than stdio
- other tests: update to check JSON {"return": "Error: error text"}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20260828-qemu-no-hmp-v5-21-9227de146347@redhat.com>
2026-08-29 12:07:44 +04:00

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QA output created by 083
=== Check disconnect before neg1 ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect after neg1 ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect 8 neg1 ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect 16 neg1 ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect before export ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect after export ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect 4 export ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect 12 export ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect 16 export ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect before neg2 ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect after neg2 ===
qemu-io: read failed: Input/output error
=== Check disconnect 8 neg2 ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect 10 neg2 ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/foo
=== Check disconnect before request ===
qemu-io: read failed: Input/output error
=== Check disconnect after request ===
qemu-io: read failed: Input/output error
=== Check disconnect before reply ===
qemu-io: read failed: Input/output error
=== Check disconnect after reply ===
qemu-io: read failed: Input/output error
=== Check disconnect 4 reply ===
qemu-io: read failed: Input/output error
=== Check disconnect 8 reply ===
qemu-io: read failed: Input/output error
=== Check disconnect before data ===
qemu-io: read failed: Input/output error
=== Check disconnect after data ===
read 512/512 bytes at offset 0
512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
=== Check disconnect before neg-classic ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/
=== Check disconnect 8 neg-classic ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/
=== Check disconnect 16 neg-classic ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/
=== Check disconnect 24 neg-classic ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/
=== Check disconnect 28 neg-classic ===
qemu-io: can't open device nbd+tcp://127.0.0.1:PORT/
=== Check disconnect after neg-classic ===
qemu-io: read failed: Input/output error
=== Check disconnect before neg1 ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect after neg1 ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect 8 neg1 ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect 16 neg1 ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect before export ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect after export ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect 4 export ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect 12 export ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect 16 export ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect before neg2 ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect after neg2 ===
qemu-io: read failed: Input/output error
=== Check disconnect 8 neg2 ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect 10 neg2 ===
qemu-io: can't open device nbd+unix:///foo?socket=SOCK_DIR/nbd.sock
=== Check disconnect before request ===
qemu-io: read failed: Input/output error
=== Check disconnect after request ===
qemu-io: read failed: Input/output error
=== Check disconnect before reply ===
qemu-io: read failed: Input/output error
=== Check disconnect after reply ===
qemu-io: read failed: Input/output error
=== Check disconnect 4 reply ===
qemu-io: read failed: Input/output error
=== Check disconnect 8 reply ===
qemu-io: read failed: Input/output error
=== Check disconnect before data ===
qemu-io: read failed: Input/output error
=== Check disconnect after data ===
read 512/512 bytes at offset 0
512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
=== Check disconnect before neg-classic ===
qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
=== Check disconnect 8 neg-classic ===
qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
=== Check disconnect 16 neg-classic ===
qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
=== Check disconnect 24 neg-classic ===
qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
=== Check disconnect 28 neg-classic ===
qemu-io: can't open device nbd+unix:///?socket=SOCK_DIR/nbd.sock
=== Check disconnect after neg-classic ===
qemu-io: read failed: Input/output error
*** done
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