| Summary: | Guest name icon disappear for lxc running guest when remount cgroup filesystem. | ||
|---|---|---|---|
| Product: | [Community] Virtualization Tools | Reporter: | Daisy Wu <jwu> |
| Component: | virt-manager | Assignee: | Cole Robinson <crobinso> |
| Status: | CLOSED WONTFIX | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | berrange, crobinso, dallan, hyao, jwu, mzhan, rwu, xen-maint, zpeng |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2012-02-07 22:03:16 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
I think this is basically a won't fix. cgroups are pretty much required for lxc guests: stopping cgroups behind libvirt's back are going to cause problems. And all things considered the error message is fairly descriptive. |
Description of problem: Guest name icon disappear for lxc running guest when remount cgroup filesystem. Version-Release number of selected component (if applicable): libvirt-0.9.4-23.el6.x86_64 qemu-kvm-0.12.1.2-2.211.el6.x86_64 # uname -a Linux wjw.redhat.com 2.6.32-220.el6.x86_64 #1 SMP Wed Nov 9 08:03:13 EST 2011 x86_64 x86_64 x86_64 GNU/Linux How reproducible: 100% Steps to Reproduce: 1. Prepare a application container guest. # virsh -c lxc:/// virsh # dumpxml demo <domain type='lxc'> <name>demo</name> <uuid>66c3867f-9603-daac-0d1e-48707d549823</uuid> <memory>1048576</memory> <currentMemory>819200</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64'>exe</type> <init>/bin/sh</init> </os> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/libexec/libvirt_lxc</emulator> <interface type='bridge'> <mac address='00:16:3e:ec:b3:7f'/> <source bridge='br0'/> <target dev='veth0'/> </interface> <console type='pty'> <target type='serial' port='0'/> </console> </devices> </domain> 2. Launch virt-manager and run the guest by virt-manager. #virt-manager --debug 3. Check the guest status: #virsh -c lxc:/// virsh # dominfo demo Id: 17425 Name: demo UUID: 66c3867f-9603-daac-0d1e-48707d549823 OS Type: exe State: running CPU(s): 1 CPU time: 0.0s Max memory: 1048576 kB Used memory: 432 kB Persistent: yes Autostart: disable Managed save: unknown 4. Umount the cgroup filesystem: # /etc/init.d/cgconfig stop Stopping cgconfig service: [ OK ] # /etc/init.d/libvirtd restart Stopping libvirtd daemon: [ OK ] Starting libvirtd daemon: [ OK ] # lscgroup cgroups can't be listed: Cgroup is not mounted 5. Check the guest again: # virsh -c lxc:/// virsh # dominfo demo Id: 17425 Name: demo UUID: 66c3867f-9603-daac-0d1e-48707d549823 OS Type: exe State: running CPU(s): 1 Max memory: 1048576 kB Used memory: 819200 kB Persistent: yes Autostart: disable Managed save: unknown 6. Remount the cgroup filesystem: # /etc/init.d/cgconfig start Starting cgconfig service: [ OK ] # /etc/init.d/libvirtd restart Stopping libvirtd daemon: [ OK ] Starting libvirtd daemon: [ OK ] # lscgroup cpuset:/ cpuset:/libvirt cpuset:/libvirt/lxc cpuset:/libvirt/qemu cpu:/ cpu:/libvirt cpu:/libvirt/lxc cpu:/libvirt/qemu cpuacct:/ cpuacct:/libvirt cpuacct:/libvirt/lxc cpuacct:/libvirt/qemu memory:/ memory:/libvirt memory:/libvirt/lxc memory:/libvirt/qemu devices:/ devices:/libvirt devices:/libvirt/lxc devices:/libvirt/qemu freezer:/ freezer:/libvirt freezer:/libvirt/lxc freezer:/libvirt/qemu net_cls:/ blkio:/ blkio:/libvirt blkio:/libvirt/lxc blkio:/libvirt/qemu virsh # dominfo demo Id: 17425 Name: demo UUID: 66c3867f-9603-daac-0d1e-48707d549823 OS Type: exe Persistent: yes Autostart: disable Managed save: unknown 7. Check the guest status by virt-manager, the guest "demo" icon disappear in virt-manager and got the error log: 2011-12-23 18:13:22,776 (connection:1385): Couldn't fetch domain id '17425' Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/connection.py", line 1383, in _update_vms check_new(vm, uuid) File "/usr/share/virt-manager/virtManager/connection.py", line 1367, in check_new vm = vmmDomain(self, rawvm, uuid) File "/usr/share/virt-manager/virtManager/domain.py", line 175, in __init__ self._libvirt_init() File "/usr/share/virt-manager/virtManager/domain.py", line 216, in _libvirt_init self.force_update_status() File "/usr/share/virt-manager/virtManager/domain.py", line 1393, in force_update_status info = self._backend.info() File "/usr/lib64/python2.6/site-packages/libvirt.py", line 1407, in info if ret is None: raise libvirtError ('virDomainGetInfo() failed', dom=self) libvirtError: internal error Unable to get cgroup for demo Actual results: As step7 results. Expected results: Guest name icon should not disappear in virt-manager. Additional info: If change the guest to under qemu, it works well.