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Description of problem:
Libvirt can not get correct value of global_period when set schedinfo with --config
Version-Release number of selected component (if applicable):
libvirt-4.5.0-2.el7.x86_64
kernel-3.10.0-919.el7.x86_64
qemu-kvm-rhev-2.12.0-7.el7.x86_64
How reproducible:
100%
Steps to Reproduce:
1.Prepare a running VM, then running the following command.
# virsh schedinfo rhel7
Scheduler : posix
cpu_shares : 1024
vcpu_period : 100000
vcpu_quota : -1
emulator_period: 100000
emulator_quota : -1
global_period : 100000
global_quota : -1
iothread_period: 100000
iothread_quota : -1
# virsh schedinfo rhel7 --set global_period=9999 --set global_quota=8888 --config
Scheduler : posix
cpu_shares : 0
vcpu_period : 9999
vcpu_quota : 0
emulator_period: 0
emulator_quota : 0
global_period : 0
global_quota : 8888
iothread_period: 0
iothread_quota : 0
2.Restart VM.
# virsh destroy rhel7;virsh start rhel7
3.Check schedinfo.
# virsh schedinfo rhel7
Scheduler : posix
cpu_shares : 1024
vcpu_period : 9999
vcpu_quota : -1
emulator_period: 100000
emulator_quota : -1
global_period : 100000
global_quota : 8888
iothread_period: 100000
iothread_quota : 8888
Actual results:
In step 1, it can not get correct value of global_period and set the value to vcpu_period.
Expected results:
can get correct value of global_period when set schedinfo with --config
Additional info:
libvirt.org web don't include the related information of global_period and global_quota.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2018:3113