Hi Peter, Thank you again for replying here. These are great instructions. I will take a look into these. Thank you! Thanks, Luna On Tue, Dec 1, 2020 at 9:34 AM Peter Krempa <pkrempa@xxxxxxxxxx> wrote: > > On Mon, Nov 30, 2020 at 14:45:18 -0500, Luna Xu wrote: > > Hi developers, > > Hi, > > [...] > > > When I start a VM with the qemu command I can specify the -no-shutdown > > flag so that my qemu process doesn't quit even if I shutdown the VM > > from the inside (issue shutdown or halt command inside VM). The VM is > > shutdown but the qemu process is not killed so that the jobs I > > submitted before for example backup (drive-backup) can continue to run > > even after VM gets shutdown by the user, and I'm able to check the > > status of the job through qmp commands (by communicating with the qemu > > process). > > As I've noted in my reply on libvirt-users, we currently don't support > this on the shutdown part of the VM lifecycle. > > On the startup part you can use VIR_DOMAIN_START_PAUSED for a VM which > didn't yet excecute any guest instructions. > > > Is anyone aware of any project that is currently implementing this > > functionality? Thanks for reading. > > I don't think that there's anybody working on it. > > If you are interested in implementing the feature the idea would be to > add a 'pause' action for <on_poweroff>pause</on_poweroff> along with a > new 'virDomainPausedReason' such as VIR_DOMAIN_PAUSED_POWEROFF and > implement the lifecycle transition from PAUSED -> RUNNING via > qemuDomainResume, which would in this case have to issue a > 'system-reset' qmp command and emit the appropriate events. >
