Bug 1749227
| Summary: | [cgroup_v2] schedinfo cmd cannot set vcpu/emulator/global/iothread period values | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | yisun | |
| Component: | libvirt | Assignee: | Pavel Hrdina <phrdina> | |
| Status: | CLOSED ERRATA | QA Contact: | yisun | |
| Severity: | medium | Docs Contact: | ||
| Priority: | high | |||
| Version: | 8.1 | CC: | jdenemar, rbalakri, wchadwic, yisun | |
| Target Milestone: | rc | |||
| Target Release: | 8.1 | |||
| Hardware: | x86_64 | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | libvirt-4.5.0-35.el8 | Doc Type: | If docs needed, set a value | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1749247 (view as bug list) | Environment: | ||
| Last Closed: | 2019-11-05 20:51:43 UTC | Type: | Bug | |
| Regression: | --- | Mount Type: | --- | |
| Documentation: | --- | CRM: | ||
| Verified Versions: | Category: | --- | ||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
| Cloudforms Team: | --- | Target Upstream Version: | ||
| Embargoed: | ||||
| Bug Depends On: | ||||
| Bug Blocks: | 1749247 | |||
Upstream commit:
commit 0bd4ad193d8ba7f0104f4739f19f2731e7cf9f56
Author: Pavel Hrdina <phrdina>
Date: Thu Sep 5 11:22:11 2019 +0200
vircgroupv2: fix setting cpu.max period
Verified by auto job with libvirt-4.5.0-35.module+el8.1.0+4227+b2722cb3.x86_64: https://libvirt-jenkins.rhev-ci-vms.eng.rdu2.redhat.com/job/libvirt-RHEL-8.1-runtest-x86_64-function-guest_resource_control/8/testReport/ (the failed case is script issue, not related with this bz) 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-2019:3345 |
[cgroup_v2] schedinfo cmd cannot set vcpu/emulator/global/iothread period values Version: libvirt-4.5.0-34.module+el8.1.0+4158+21722aaf.x86_64 How reproducible: 100% Steps: 1. Quota values can be set successfully by schedinfo as follow: [root@hp-dl320eg8-12 machine-qemu\x2d2\x2dvm2.scope]# virsh schedinfo vm2 --set vcpu_quota=333333 emulator_quota=333333 global_quota=333333 iothread_quota=333333 Scheduler : posix cpu_shares : 100 vcpu_period : 100000 vcpu_quota : 333333 emulator_period: 100000 emulator_quota : 333333 global_period : 100000 global_quota : 333333 iothread_period: 100000 iothread_quota : 333333 [root@hp-dl320eg8-12 machine-qemu\x2d2\x2dvm2.scope]# cat cpu.max vcpu*/cpu.max iothread*/cpu.max emulator/cpu.max 333333 100000 333333 100000 333333 100000 333333 100000 333333 100000 2. Period values cannot be set by schedinfo as follow: [root@hp-dl320eg8-12 machine-qemu\x2d2\x2dvm2.scope]# virsh schedinfo vm2 --set vcpu_period=222222 emulator_period=222222 global_period=222222 iothread_period=222222 Scheduler : posix cpu_shares : 100 vcpu_period : 100000 vcpu_quota : 333333 emulator_period: 100000 emulator_quota : 333333 global_period : 100000 global_quota : 333333 iothread_period: 100000 iothread_quota : 333333 <==== nothing changed [root@hp-dl320eg8-12 machine-qemu\x2d2\x2dvm2.scope]# cat cpu.max vcpu*/cpu.max iothread*/cpu.max emulator/cpu.max 333333 100000 333333 100000 333333 100000 333333 100000 333333 100000 <===== nothing changed 3. Period values can be set by shell cmd [root@hp-dl320eg8-12 machine-qemu\x2d2\x2dvm2.scope]# for i in {cpu.max,emulator/cpu.max,iothread1/cpu.max,vcpu0/cpu.max,vcpu1/cpu.max}; do echo '333333 222222' > $i; done [root@hp-dl320eg8-12 machine-qemu\x2d2\x2dvm2.scope]# cat cpu.max vcpu*/cpu.max iothread*/cpu.max emulator/cpu.max 333333 222222 333333 222222 333333 222222 333333 222222 333333 222222 [root@hp-dl320eg8-12 machine-qemu\x2d2\x2dvm2.scope]# virsh schedinfo vm2 Scheduler : posix cpu_shares : 100 vcpu_period : 222222 vcpu_quota : 333333 emulator_period: 222222 emulator_quota : 333333 global_period : 222222 global_quota : 333333 iothread_period: 222222 iothread_quota : 333333 Expected result: In Step 2, the ‘schedinfo’ should be able to successfully set the period related values.