Bug 982168
| Summary: | libvirt failed to create controller cpu for group when changed the guest's defualt <partition> element | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Luwen Su <lsu> |
| Component: | libvirt | Assignee: | Libvirt Maintainers <libvirt-maint> |
| Status: | CLOSED NOTABUG | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.0 | CC: | acathrow, dyuan, pkrempa, shyu, zhpeng |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-07-12 11:29:24 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: | |||
From the documentation for the <partition> element: "Hypervisors may allow for virtual machines to be placed into resource partitions, potentially with nesting of said partitions. The resource element groups together configuration related to resource partitioning. It currently supports a child element partition whose content defines the path of the resource partition in which to place the domain. If no partition is listed, then the domain will be placed in a default partition. It is the responsibility of the app/admin to ensure that the partition exists prior to starting the guest. Only the (hypervisor specific) default partition can be assumed to exist by default." The described behavior is expected. Closing as NOTABUG. |
Description of problem: when changes the default <partition> from machine to others , like test , the guest will fail to start because the error "Failed to create controller cpu for group " Version-Release number of selected component (if applicable): libvirt-1.1.0-1.el7.x86_64 qemu-kvm-1.5.1-2.el7.x86_64 libcgroup-0.38-3.el7.x86_64 kernel-3.10.0-0.rc7.64.el7.x86_64 How reproducible: 100% Steps to Reproduce: 1. Prepare a shutoff guest , add this to the guest <resource> <partition>/machinc</partition> </resource> 2.start the guest #virsh start test error: Failed to start domain test error: Unable to initialize /machinc cgroup: No such file or directory 3.If create the dir in /sys/fs/cgroup/cpu/ by myself , those related files can be created except the guest's contents # ll machina/ total 0 -rw-r--r--. 1 root root 0 Jul 8 11:23 cgroup.clone_children --w--w--w-. 1 root root 0 Jul 8 11:23 cgroup.event_control -rw-r--r--. 1 root root 0 Jul 8 11:23 cgroup.procs -r--r--r--. 1 root root 0 Jul 8 11:23 cpuacct.stat -rw-r--r--. 1 root root 0 Jul 8 11:23 cpuacct.usage -r--r--r--. 1 root root 0 Jul 8 11:23 cpuacct.usage_percpu -rw-r--r--. 1 root root 0 Jul 8 11:23 cpu.cfs_period_us -rw-r--r--. 1 root root 0 Jul 8 11:23 cpu.cfs_quota_us -rw-r--r--. 1 root root 0 Jul 8 11:23 cpu.rt_period_us -rw-r--r--. 1 root root 0 Jul 8 11:23 cpu.rt_runtime_us -rw-r--r--. 1 root root 0 Jul 8 11:23 cpu.shares -r--r--r--. 1 root root 0 Jul 8 11:23 cpu.stat -rw-r--r--. 1 root root 0 Jul 8 11:23 notify_on_release -rw-r--r--. 1 root root 0 Jul 8 11:23 tasks 4.In /var/log/message , libvirt debug level log libvirtd[10139]: path=/machinc create=0 controllers=ffffffff libvirtd[10139]: parent=(nil) path=/machinc.partition controllers=-1 libvirtd[10139]: group=0x7fe8d4000e80 controllers=-1 path=/machinc.partition parent=(nil) libvirtd[10139]: Auto-detecting controllers libvirtd[10139]: Controller 'cpu' present=yes libvirtd[10139]: Controller 'cpuacct' present=yes libvirtd[10139]: Controller 'cpuset' present=yes libvirtd[10139]: Controller 'memory' present=yes libvirtd[10139]: Controller 'devices' present=yes libvirtd[10139]: Controller 'freezer' present=yes libvirtd[10139]: Controller 'blkio' present=yes libvirtd[10139]: Controller 'net_cls' present=yes libvirtd[10139]: Controller 'perf_event' present=yes libvirtd[10139]: Detected mount/mapping 0:cpu at /sys/fs/cgroup/cpu,cpuacct in /machinc.partition libvirtd[10139]: Detected mount/mapping 1:cpuacct at /sys/fs/cgroup/cpu,cpuacct in /machinc.partition libvirtd[10139]: Detected mount/mapping 2:cpuset at /sys/fs/cgroup/cpuset in /machinc.partition libvirtd[10139]: Detected mount/mapping 3:memory at /sys/fs/cgroup/memory in /machinc.partition libvirtd[10139]: Detected mount/mapping 4evices at /sys/fs/cgroup/devices in /machinc.partition libvirtd[10139]: Detected mount/mapping 5:freezer at /sys/fs/cgroup/freezer in /machinc.partition libvirtd[10139]: Detected mount/mapping 6:blkio at /sys/fs/cgroup/blkio in /machinc.partition libvirtd[10139]: Detected mount/mapping 7:net_cls at /sys/fs/cgroup/net_cls in /machinc.partition libvirtd[10139]: Detected mount/mapping 8erf_event at /sys/fs/cgroup/perf_event in /machinc.partition libvirtd[10139]: parent=(nil) path=/ controllers=-1 libvirtd[10139]: group=0x7fe8d4007570 controllers=-1 path=/ parent=(nil) libvirtd[10139]: Auto-detecting controllers libvirtd[10139]: Controller 'cpu' present=yes libvirtd[10139]: Controller 'cpuacct' present=yes libvirtd[10139]: Controller 'cpuset' present=yes libvirtd[10139]: Controller 'memory' present=yes libvirtd[10139]: Controller 'devices' present=yes libvirtd[10139]: Controller 'freezer' present=yes libvirtd[10139]: Controller 'blkio' present=yes libvirtd[10139]: Controller 'net_cls' present=yes libvirtd[10139]: Controller 'perf_event' present=yes libvirtd[10139]: Detected mount/mapping 0:cpu at /sys/fs/cgroup/cpu,cpuacct in / libvirtd[10139]: Detected mount/mapping 1:cpuacct at /sys/fs/cgroup/cpu,cpuacct in / libvirtd[10139]: Detected mount/mapping 2:cpuset at /sys/fs/cgroup/cpuset in / libvirtd[10139]: Detected mount/mapping 3:memory at /sys/fs/cgroup/memory in / libvirtd[10139]: Detected mount/mapping 4evices at /sys/fs/cgroup/devices in / libvirtd[10139]: Detected mount/mapping 5:freezer at /sys/fs/cgroup/freezer in / libvirtd[10139]: Detected mount/mapping 6:blkio at /sys/fs/cgroup/blkio in / libvirtd[10139]: Detected mount/mapping 7:net_cls at /sys/fs/cgroup/net_cls in / libvirtd[10139]: Detected mount/mapping 8erf_event at /sys/fs/cgroup/perf_event in / libvirtd[10139]: Make group /machinc.partition libvirtd[10139]: Make controller /sys/fs/cgroup/cpu,cpuacct/machinc.partition/ libvirtd[10139]: Failed to create controller cpu for group libvirtd[10139]: Done making controllers for group libvirtd[10139]: Removing cgroup /machinc.partition Actual results: Fail to start guest with customized <partition> Expected results: The guest can start Additional info: