diff options
| author | Alejandro Jimenez <alejandro.j.jimenez@oracle.com> | 2020-12-11 17:31:52 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-12-15 12:51:58 -0500 |
| commit | c753e8e72548493d2a110c0482c4a987a733b033 (patch) | |
| tree | c8830e44baac83400639be1e8ea4bfbd39d91f7b /qapi | |
| parent | 2a5ad60b5406daca3658f2a6735318615ee6a116 (diff) | |
vl: Add option to avoid stopping VM upon guest panic
The current default action of pausing a guest after a panic event
is received leaves the responsibility to resume guest execution to the
management layer. The reasons for this behavior are discussed here:
https://lore.kernel.org/qemu-devel/52148F88.5000509@redhat.com/
However, in instances like the case of older guests (Linux and
Windows) using a pvpanic device but missing support for the
PVPANIC_CRASHLOADED event, and Windows guests using the hv-crash
enlightenment, it is desirable to allow the guests to continue
running after sending a PVPANIC_PANICKED event. This allows such
guests to proceed to capture a crash dump and automatically reboot
without intervention of a management layer.
Add an option to avoid stopping a VM after a panic event is received,
by passing:
-action panic=none
in the command line arguments, or during runtime by using an upcoming
QMP command.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Message-Id: <1607705564-26264-3-git-send-email-alejandro.j.jimenez@oracle.com>
[Do not fix panic action in the variable, instead modify -no-shutdown. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'qapi')
| -rw-r--r-- | qapi/run-state.json | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/qapi/run-state.json b/qapi/run-state.json index 25e82d1be1..1f3b329f05 100644 --- a/qapi/run-state.json +++ b/qapi/run-state.json @@ -354,6 +354,18 @@ 'data': [ 'poweroff', 'pause' ] } ## +# @PanicAction: +# +# @none: Continue VM execution +# +# @pause: Pause the VM +# +# Since: 6.0 +## +{ 'enum': 'PanicAction', + 'data': [ 'poweroff', 'pause', 'none' ] } + +## # @watchdog-set-action: # # Set watchdog action @@ -372,6 +384,8 @@ # # @shutdown: @ShutdownAction action taken on guest shutdown. # +# @panic: @PanicAction action taken on guest panic. +# # @watchdog: @WatchdogAction action taken when watchdog timer expires . # # Returns: Nothing on success. @@ -383,12 +397,14 @@ # -> { "execute": "set-action", # "arguments": { "reboot": "shutdown", # "shutdown" : "pause", +# "panic": "pause", # "watchdog": "inject-nmi" } } # <- { "return": {} } ## { 'command': 'set-action', 'data': { '*reboot': 'RebootAction', '*shutdown': 'ShutdownAction', + '*panic': 'PanicAction', '*watchdog': 'WatchdogAction' }, 'allow-preconfig': true } |