qemu/tests/qemu-iotests/259.out
Eric Blake 4e2f441878 qemu-img: Flush stdout before before potential stderr messages
During 'qemu-img create ... 2>&1', if --quiet is not in force, we can
end up with buffered I/O in stdout that was produced before failure,
but which appears in output after failure.  This is confusing; the fix
is to flush stdout prior to attempting anything that might produce an
error message.  Several iotests demonstrate the resulting ordering
change now that the merged outputs now reflect chronology.  (An even
better fix would be to avoid printf from within block.c altogether,
but that's much more invasive...)

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200706203954.341758-2-eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2020-07-14 15:18:59 +02:00

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QA output created by 259
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864
--- Testing creation ---
Formatting 'TEST_DIR/t.IMGFMT', fmt=qcow2 size=67108864
image: TEST_DIR/t.IMGFMT
file format: qcow2
virtual size: 64 MiB (67108864 bytes)
disk size: unavailable
--- Testing creation for which the node would need to grow ---
Formatting 'TEST_DIR/t.IMGFMT', fmt=qcow2 size=67108864 preallocation=metadata
qemu-img: TEST_DIR/t.IMGFMT: Could not resize image: Image format driver does not support resize
*** done