[PATCH v7 0/7] migration/dirtyrate: Introduce APIs for getting domain memory dirty rate

V6 -> V7: add virDomainDirtyRateStatus enum define calc_status as int split 5/5 in v6 into two parts: 6/7 in v7: extend dirtyrate statistics for domGetStats 7/7 in v7: extend corresponding virsh command V5 -> V6: split DomainGetDirtyRateInfo(domdirtyrate) API into two parts: 1. DomainStartDirtyRateCalc(domdirtyrate-calc) for starting dirty rate calculation; 2. qemuDomainGetStatsDirtyRate(domstats --dirtyrate) for querying dirty rate infomation. V4 -> V5: squash 1/7 and bits of 5/7 and 6/7 into 2/7 in v4 (to be 1/5 in v5) squash left of 5/7 into 4/7 in v4 (to be 3/5 in v5) add VIR_DOMAIN_DIRTYRATE_DEFAULT flag remove redundant error report rename virsh api to "domdirtyrate" use vshTablePtr for virsh api output add description in docs/manpages/virsh.rst other format optimize V3 -> V4: define flags to unsigned int fix some compile warnings V2 -> V3: reorganize patchset to fix compile warning V1 -> V2: replace QEMU_JOB_ASYNC with QEMU_JOB_QUERY Sometimes domain's memory dirty rate is expected by user in order to decide whether it's proper to be migrated out or not. We have already completed the QEMU part of the capability: https://patchew.org/QEMU/1600237327-33618-1-git-send-email-zhengchuan@hua... And this serial of patches introduce the corresponding LIBVIRT part: 1. Calculating Introduce a new API DomainStartDirtyRateCalc and corresponding virsh api (domdirtyrate-calc) for starting dirty rate calculation by calling qmp 'calc-dirty-rate'. # virsh domdirtyrate-calc <domain> [--seconds <sec>] 2. Querying Introduce command 'virsh domstats --dirtyrate' for reporting memory dirty rate infomation by calling qmp 'query-dirty-rate'. The info is listed as: Domain: 'vm0' dirtyrate.calc_status=2 dirtyrate.calc_start_time=1534523 dirtyrate.calc_period=1 dirtyrate.megabytes_per_second=5 Hao Wang (7): migration/dirtyrate: Introduce virDomainStartDirtyRateCalc API migration/dirtyrate: Implement qemuDomainStartDirtyRateCalc migration/dirtyrate: Introduce domdirtyrate-calc virsh api migration/dirtyrate: Introduce virDomainDirtyRateStatus enum migration/dirtyrate: Implement qemuMonitorQueryDirtyRate migration/dirtyrate: Extend dirtyrate statistics for domGetStats migration/dirtyrate: Introduce command 'virsh domstats --dirtyrate' docs/manpages/virsh.rst | 33 +++++++++- include/libvirt/libvirt-domain.h | 23 +++++++ src/driver-hypervisor.h | 6 ++ src/libvirt-domain.c | 59 +++++++++++++++++ src/libvirt_public.syms | 5 ++ src/qemu/qemu_driver.c | 110 +++++++++++++++++++++++++++++++ src/qemu/qemu_monitor.c | 24 +++++++ src/qemu/qemu_monitor.h | 19 ++++++ src/qemu/qemu_monitor_json.c | 101 ++++++++++++++++++++++++++++ src/qemu/qemu_monitor_json.h | 8 +++ src/remote/remote_driver.c | 1 + src/remote/remote_protocol.x | 14 +++- src/remote_protocol-structs | 6 ++ tools/virsh-domain-monitor.c | 7 ++ tools/virsh-domain.c | 58 ++++++++++++++++ 15 files changed, 471 insertions(+), 3 deletions(-) -- 2.23.0