On Wed, 24 Jul 2024 12:35:16 -0500 Brett Neumeier <ran...@freesa.org> wrote: > I'm trying to set up supervision for a QEMU virtual machine on a machine that > uses s6 and s6-rc for service management. > > I currently have my QEMU configured so that it shuts down gracefully when the > "system_powerdown" monitor command is executed. With s6, though, the only > idiomatic way that I can get the supervision frameowork to shut down a > long-running process is to send it a signal. I've verified that I can get > QEMU to terminate by sending it a SIGINT, SIGTERM, or SIGPWR; but all of > those just cause it to terminate, they don't send an ACPI shutdown request to > the guest operating system. > > Is there any way to trigger the same "system_powerdown" mechanism by sending > QEMU a signal? If not, can anyone suggest a way to add a signal handler that > does that?
Following up on this in case anyone does a search of the mailing list in future: I asked the same question on the supervision mailing list hosted at skarnet.org, and Jan Braun pointed me to other times this has been discussed already: https://patchwork.kernel.org/project/qemu-devel/patch/23d89ab3bd16ebf7a864ab75c300d...@whitewinterwolf.com/ and https://gitlab.com/qemu-project/qemu/-/issues/148 Jan also provided a patch that applies cleanly to QEMU 9.0 that uses SIGPWR for this purpose, see: https://skarnet.org/lists/supervision/3164.html Cheers! Brett -- Brett Neumeier <ran...@freesa.org>
