[libvirt] [PATCH v4 0/4] Implement migrate-getmaxdowntime command

Currently, the maximum tolerable downtime for a domain being migrated is write-only. This patch implements a way to query that value nondestructively. I've tried to incorporate the feedback from v3; however, I've left alone a couple of places where the feedback would have diverged from parallelism with the existing migrate-setdowntime help/info. Also, since the main use of this new command is likely to be (as in virt-manager) in combination with migrate-setmaxdowntime, I don't think it's going to really help to add an options to report this in some other unit other than milliseconds. To-do: Ought to revisit setmaxdowntime to use the new preferred qemu interface. Changes from [v3]: * Incorporated suggestions, including adding an error message * Added a patch to the news.xml file [v1} https://www.redhat.com/archives/libvir-list/2017-July/msg00908.html [v2} https://www.redhat.com/archives/libvir-list/2017-July/msg01010.html [v3} https://www.redhat.com/archives/libvir-list/2017-July/msg01301.html Scott Garfinkle (4) Add virDomainMigrateGetMaxDowntime public API qemu: Implement virDomainMigrateGetMaxDowntime virsh: Add support for virDomainMigrateGetMaxDowntime docs: document migrate-getmaxdowntime support --- docs/news.xml | 10 +++++++ include/libvirt/libvirt-domain.h | 4 +++ src/driver-hypervisor.h | 6 +++++ src/libvirt-domain.c | 41 ++++++++++++++++++++++++++++ src/libvirt_public.syms | 4 +++ src/qemu/qemu_driver.c | 58 ++++++++++++++++++++++++++++++++++++++++ src/qemu/qemu_monitor.h | 3 +++ src/qemu/qemu_monitor_json.c | 4 +++ src/remote/remote_driver.c | 1 + src/remote/remote_protocol.x | 16 ++++++++++- src/remote_protocol-structs | 8 ++++++ tools/virsh-domain.c | 42 +++++++++++++++++++++++++++++ tools/virsh.pod | 6 +++++ 13 files changed, 202 insertions(+), 1 deletion(-)