[PATCH v5 0/5] migration/dirtyrate: Introduce APIs for getting domain memory dirty rate
Hao Wang
wanghao232 at huawei.com
Mon Feb 1 09:55:38 UTC 2021
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@huawei.com/
And this serial of patches introduce the corresponding LIBVIRT part --
DomainGetDirtyRateInfo API and corresponding virsh api -- "domdirtyrate".
instructions:
bash# virsh domdirtyrate --help
NAME
domdirtyrate - Get a vm's memory dirty rate
SYNOPSIS
domdirtyrate <domain> [--seconds <number>] [--calculate] [--query]
DESCRIPTION
Get memory dirty rate of a domain in order to decide whether it's proper to be migrated out or not.
OPTIONS
[--domain] <string> domain name, id or uuid
--seconds <number> calculate memory dirty rate within specified seconds, the supported value range is [1, 60], default to 1s.
--calculate calculate dirty rate only, can be used together with --query, either or both is expected, otherwise would default to both.
--query query dirty rate only, can be used together with --calculate, either or both is expected, otherwise would default to both.
example:
bash# virsh domdirtyrate vm0 --calculate --query --seconds 1
Item Value
-----------------------------
Status: measured
Start time: 51585
Calculate time: 1 s
Dirty rate: 18 MB/s
Hao Wang (5):
migration/dirtyrate: Introduce DomainGetDirtyRateInfo API
migration/dirtyrate: Implement qemuDomainCalculateDirtyRate
migration/dirtyrate: Implement qemuDomainQueryDirtyRate
migration/dirtyrate: Implement qemuDomainGetDirtyRateInfo
migration/dirtyrate: Introduce domdirtyrate virsh api
docs/manpages/virsh.rst | 17 +++++
include/libvirt/libvirt-domain.h | 59 ++++++++++++++
src/driver-hypervisor.h | 7 ++
src/libvirt-domain.c | 56 ++++++++++++++
src/libvirt_public.syms | 5 ++
src/qemu/qemu_driver.c | 67 ++++++++++++++++
src/qemu/qemu_migration.c | 48 ++++++++++++
src/qemu/qemu_migration.h | 10 +++
src/qemu/qemu_monitor.c | 24 ++++++
src/qemu/qemu_monitor.h | 8 ++
src/qemu/qemu_monitor_json.c | 99 ++++++++++++++++++++++++
src/qemu/qemu_monitor_json.h | 8 ++
src/remote/remote_driver.c | 1 +
src/remote/remote_protocol.x | 21 ++++-
tools/virsh-domain.c | 127 +++++++++++++++++++++++++++++++
15 files changed, 556 insertions(+), 1 deletion(-)
--
2.23.0
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