Bug 857013
| Summary: | Failed to run cpu-stats after vcpu hotplug | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | hongming <honzhang> |
| Component: | libvirt | Assignee: | Osier Yang <jyang> |
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 6.4 | CC: | acathrow, dallan, dyasny, dyuan, mzhan, pkrempa, rwu, yupzhang |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | libvirt-0.10.2-3.el6 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-02-21 07:23:50 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: | |||
The root issue that causes this bug will probably be very similar/identical to https://bugzilla.redhat.com/show_bug.cgi?id=855218 . I found another bug as follows . Do I need to file a new bug about it? They have different errors Description Failed to set vcpu scheduler parameters after hotplug vcpu. The following errors occur. error: Unable to find vcpu cgroup for rhel6.2(vcpu: 1): No such file or directory Version libvirt-0.10.2-0rc1.el6.x86_64 qemu-kvm-0.12.1.2-2.307.el6.x86_64 How reproducible: 100% Steps 1.# virsh start rhel6.2 Domain rhel6.2 started 2.# virsh vcpucount rhel6.2 maximum config 10 maximum live 10 current config 1 current live 1 3.# virsh setvcpus rhel6.2 2 4.# virsh schedinfo rhel6.2 Scheduler : posix cpu_shares : 2048 vcpu_period : 1000000 vcpu_quota : 18446744073709551 emulator_period: 1000000 emulator_quota : 18446744073709551 5.# virsh schedinfo rhel6.2 --set vcpu_quota=1000 Scheduler : posix error: Unable to find vcpu cgroup for rhel6.2(vcpu: 1): No such file or directory 6.# ll /cgroup/cpu/libvirt/qemu/rhel6.2/vcpu1 ls: cannot access /cgroup/cpu/libvirt/qemu/rhel6.2/vcpu1: No such file or directory 7.# vim /var/log/libvirtd.log 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupNew:617 : New group /libvirt/qemu/rhel6.2/vcpu1 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupDetect:273 : Detected mount/mapping 0:cpu at /cgroup/cpu in 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupDetect:273 : Detected mount/mapping 1:cpuacct at /cgroup/cpuacct in 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupDetect:273 : Detected mount/mapping 2:cpuset at /cgroup/cpuset in 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupDetect:273 : Detected mount/mapping 3:memory at /cgroup/memory in 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupDetect:273 : Detected mount/mapping 4:devices at /cgroup/devices in 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupDetect:273 : Detected mount/mapping 5:freezer at /cgroup/freezer in 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupDetect:273 : Detected mount/mapping 6:blkio at /cgroup/blkio in 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupMakeGroup:535 : Make group /libvirt/qemu/rhel6.2/vcpu1 2012-09-20 03:22:18.687+0000: 1511: debug : virCgroupMakeGroup:560 : Make controller /cgroup/cpu/libvirt/qemu/rhel6.2/vcpu1/ 2012-09-20 03:22:18.687+0000: 1511: error : qemuSetVcpusBWLive:7745 : Unable to find vcpu cgroup for rhel6.2(vcpu: 1): No such file or directory 2012-09-20 03:22:18.687+0000: 1511: debug : virDomainFree:2281 : dom=0x7f852800dd70, (VM: name=rhel6.2, uuid=17210b7f-6bcf-c46d-404e-9652796a93b9) 2012-09-20 03:22:18.687+0000: 1511: debug : virObjectUnref:135 : OBJECT_UNREF: obj=0x7f852800dd70 2012-09-20 03:22:18.687+0000: 1511: debug : virObjectUnref:137 : OBJECT_DISPOSE: obj=0x7f852800dd70 2012-09-20 03:22:18.687+0000: 1511: debug : virDomainDispose:225 : release domain 0x7f852800dd70 rhel6.2 17210b7f-6bcf-c46d-404e-9652796a93b9 2012-09-20 03:22:18.687+0000: 1511: debug : virObjectUnref:135 : OBJECT_UNREF: obj=0x7f851805b2f0 Actual result Failed to set vcpu scheduler parameters after hotplug vcpu. Expect result Successfully set vcpu scheduler parameters after hotplug vcpu. Additional info Osier, FYI Peter thinks that this BZ and BZ 855218 are duplicates. (In reply to comment #3) > I found another bug as follows . Do I need to file a new bug about it? They > have different errors > > > Description > Failed to set vcpu scheduler parameters after hotplug vcpu. The following > errors occur. > error: Unable to find vcpu cgroup for rhel6.2(vcpu: 1): No such file or > directory > Yes, it's separate bug. *** Bug 864381 has been marked as a duplicate of this bug. *** Verified this issue with: libvirt-0.10.2-3.el6.x86_64 qemu-kvm-0.12.1.2-2.316.el6.x86_64 kernel-2.6.32-287.el6.x86_64 libssh2-1.4.2-1.el6.x86_64 1.Verify issue in Description: # virsh start RHEL6.4 Domain RHEL6.4 started # virsh vcpucount RHEL6.4 maximum config 4 maximum live 4 current config 1 current live 1 # virsh cpu-stats RHEL6.4 CPU0: cpu_time 0.453463440 seconds vcpu_time 0.409547097 seconds CPU1: cpu_time 0.515977155 seconds vcpu_time 0.478160264 seconds CPU2: cpu_time 11.989434488 seconds vcpu_time 11.464623158 seconds CPU3: cpu_time 6.079361532 seconds vcpu_time 5.480842340 seconds Total: cpu_time 19.041352016 seconds user_time 0.600000000 seconds system_time 6.360000000 seconds # virsh setvcpus RHEL6.4 2 # virsh vcpucount RHEL6.4 maximum config 4 maximum live 4 current config 1 current live 2 # virsh cpu-stats RHEL6.4 CPU0: cpu_time 1.007111478 seconds vcpu_time 0.491676600 seconds CPU1: cpu_time 0.775450917 seconds vcpu_time 0.596590081 seconds CPU2: cpu_time 14.678617165 seconds vcpu_time 13.331851397 seconds CPU3: cpu_time 7.744602633 seconds vcpu_time 6.376867462 seconds Total: cpu_time 24.205879763 seconds user_time 0.630000000 seconds system_time 7.130000000 seconds 2.Verify issue in Comment 3 # virsh vcpucount RHEL6.4 maximum config 4 maximum live 4 current config 1 current live 1 # virsh setvcpus RHEL6.4 2 # virsh schedinfo RHEL6.4 Scheduler : posix cpu_shares : 1024 vcpu_period : 100000 vcpu_quota : -1 emulator_period: 100000 emulator_quota : -1 # virsh schedinfo RHEL6.4 --set vcpu_quota=1000 Scheduler : posix cpu_shares : 1024 vcpu_period : 100000 vcpu_quota : 1000 emulator_period: 100000 emulator_quota : -1 # ll /cgroup/cpu/libvirt/qemu/RHEL6.4/vcpu1 total 0 --w--w--w-. 1 root root 0 Oct 15 21:52 cgroup.event_control -r--r--r--. 1 root root 0 Oct 15 21:52 cgroup.procs -rw-r--r--. 1 root root 0 Oct 15 21:52 cpu.cfs_period_us -rw-r--r--. 1 root root 0 Oct 15 21:53 cpu.cfs_quota_us -rw-r--r--. 1 root root 0 Oct 15 21:52 cpu.rt_period_us -rw-r--r--. 1 root root 0 Oct 15 21:52 cpu.rt_runtime_us -rw-r--r--. 1 root root 0 Oct 15 21:52 cpu.shares -r--r--r--. 1 root root 0 Oct 15 21:52 cpu.stat -rw-r--r--. 1 root root 0 Oct 15 21:52 notify_on_release -rw-r--r--. 1 root root 0 Oct 15 21:52 tasks So change the bug status to VERIFIED. 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. http://rhn.redhat.com/errata/RHSA-2013-0276.html |
Description of problem: Failed to run cpu-stats after vcpu hotplug. The following error occur. error: Failed to virDomainGetCPUStats() error: internal error error accessing cgroup cpuacct for vcpu Version-Release number of selected component (if applicable): libvirt-0.10.1-1.el6.x86_64 qemu-kvm-0.12.1.2-2.307.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1.# virsh start rhel6.2 Domain rhel6.2 started 2.# virsh vcpucount rhel6.2 maximum config 160 maximum live 160 current config 1 current live 1 3.# virsh cpu-stats rhel6.2 CPU0: cpu_time 7.947330261 seconds vcpu_time 7.660429534 seconds CPU1: cpu_time 2.387255727 seconds vcpu_time 2.203674969 seconds CPU2: cpu_time 0.523415331 seconds vcpu_time 0.322719706 seconds CPU3: cpu_time 0.183748952 seconds vcpu_time 0.133049415 seconds Total: cpu_time 11.041750271 seconds user_time 0.280000000 seconds system_time 2.970000000 seconds 4.# virsh setvcpus rhel6.2 2 5.# virsh vcpucount rhel6.2 maximum config 160 maximum live 160 current config 1 current live 2 6.# virsh cpu-stats rhel6.2 error: Failed to virDomainGetCPUStats() error: internal error error accessing cgroup cpuacct for vcpu Actual results: Failed to run cpu-stats after vcpu hotplug. Expected results: Run cpu-stats successfully Additional info: