Libvirt would like to be able to distinguish between a SHUTDOWN event triggered solely by guest request and one triggered by a SIGTERM or other action on the host. While qemu_kill_report() was already able to give different output to stderr based on whether a shutdown was triggered by a host signal (but NOT by a host UI event, such as clicking the X on the window), that information was then lost to management. The previous patches improved things to use an enum throughout all callsites, so now we have something ready to expose through QMP. Note that for now, the decision was to expose ONLY a boolean, rather than promoting ShutdownCause to a QAPI enum; this is because libvirt has not expressed an interest in anything finer-grained. We can still add additional details, in a backwards-compatible manner, if a need later arises (if the addition happens before 2.10, we can replace the bool with an enum; otherwise, the enum will have to be in addition to the bool); this patch merely adds a helper shutdown_caused_by_guest() to map the internal enum into the external boolean. Update expected iotest outputs to match the new data (complete coverage of the affected tests is obtained by -raw, -qcow2, and -nbd). Here is output from 'virsh qemu-monitor-event --loop' with the patch installed: event SHUTDOWN at 1492639680.731251 for domain fedora_13: {"guest":true} event STOP at 1492639680.732116 for domain fedora_13: <null> event SHUTDOWN at 1492639680.732830 for domain fedora_13: {"guest":false} Note that libvirt runs qemu with -no-shutdown: the first SHUTDOWN event was triggered by an action I took directly in the guest (shutdown -h), at which point qemu stops the vcpus and waits for libvirt to do any final cleanups; the second SHUTDOWN event is the result of libvirt sending SIGTERM now that it has completed cleanup. Libvirt is already smart enough to only feed the first qemu SHUTDOWN event to the end user (remember, virsh qemu-monitor-event is a low-level debugging interface that is explicitly unsupported by libvirt, so it sees things that normal end users do not); changing qemu to emit SHUTDOWN only once is outside the scope of this series. See also https://bugzilla.redhat.com/1384007 Signed-off-by: Eric Blake <eblake@redhat.com> Message-Id: <20170515214114.15442-6-eblake@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
64 lines
2.1 KiB
Plaintext
64 lines
2.1 KiB
Plaintext
QA output created by 087
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
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=== Missing ID and node-name ===
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Testing:
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QMP_VERSION
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{"return": {}}
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{"error": {"class": "GenericError", "desc": "'node-name' must be specified for the root node"}}
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{"return": {}}
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{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}}
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=== Duplicate ID ===
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Testing: -drive driver=IMGFMT,id=disk,node-name=test-node,file=TEST_DIR/t.IMGFMT
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QMP_VERSION
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{"return": {}}
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{"error": {"class": "GenericError", "desc": "node-name=disk is conflicting with a device id"}}
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{"error": {"class": "GenericError", "desc": "Duplicate node name"}}
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{"return": {}}
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{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}}
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=== aio=native without O_DIRECT ===
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Testing:
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QMP_VERSION
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{"return": {}}
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{"error": {"class": "GenericError", "desc": "aio=native was specified, but it requires cache.direct=on, which was not specified."}}
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{"return": {}}
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{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}}
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=== Encrypted image ===
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 encryption=on
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Testing: -S
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QMP_VERSION
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{"return": {}}
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{"error": {"class": "GenericError", "desc": "Use of AES-CBC encrypted IMGFMT images is no longer supported in system emulators"}}
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{"return": {}}
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{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}}
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Testing:
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QMP_VERSION
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{"return": {}}
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{"error": {"class": "GenericError", "desc": "Use of AES-CBC encrypted IMGFMT images is no longer supported in system emulators"}}
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{"return": {}}
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{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}}
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=== Missing driver ===
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 encryption=on
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Testing: -S
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QMP_VERSION
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{"return": {}}
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{"error": {"class": "GenericError", "desc": "Parameter 'driver' is missing"}}
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{"return": {}}
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{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false}}
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*** done
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