Bug 847518
| Summary: | 3.1 [Port mirroring] Failed to start second VM with port mirroring enabled while another VM with port mirroring enabled is already running | ||||||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | GenadiC <gcheresh> | ||||
| Component: | vdsm | Assignee: | Dan Kenigsberg <danken> | ||||
| Status: | CLOSED ERRATA | QA Contact: | GenadiC <gcheresh> | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | high | ||||||
| Version: | 6.3 | CC: | abaron, bazulay, iheim, ilvovsky, lpeer, ykaul | ||||
| Target Milestone: | rc | Keywords: | ZStream | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | network | ||||||
| Fixed In Version: | vdsm-4.9.6-32.0 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-12-04 19:05:26 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: | |||||||
| Attachments: |
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We need to add refernce counting to the bridge's promisc mode, and to its ingress rule. Furthermore, only the per-target filter should be removed when a monitorring VM is taken down, not the complete rule. There's a bunch of patches dealing with port-mirroring issue: http://gerrit.ovirt.org/7425 http://gerrit.ovirt.org/7299 and their friends. Verified in SI17 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-2012-1508.html |
Created attachment 603788 [details] vdsm log Description of problem: Enable port mirroring on one VM and run it. Then enable port mirroring on another VM and try to run it. It will fail with "The vm start process failed" error message Steps to Reproduce: 1. Enable port mirroring on several NICs of one VM and run it 2. After some time enable port mirroring on several NICs of another VM and run it Actual results: The second VM will fail to run Expected results: The second VM is supposed to run with port mirroring enabled Additional info: MainProcess|Thread-277295::DEBUG::2012-08-12 17:23:45,675::__init__::1164::Storage.Misc.excCmd::(_log) '/sbin/tc qdisc add dev rhevm ingress' (cwd None) MainProcess|Thread-277295::DEBUG::2012-08-12 17:23:45,703::__init__::1164::Storage.Misc.excCmd::(_log) FAILED: <err> = 'RTNETLINK answers: File exists\n'; <rc> = 2 MainProcess|Thread-277295::ERROR::2012-08-12 17:23:45,704::supervdsmServer::61::SuperVdsm.ServerCallback::(wrapper) Error in setPortMirroring Traceback (most recent call last): File "/usr/share/vdsm/supervdsmServer.py", line 59, in wrapper return func(*args, **kwargs) File "/usr/share/vdsm/supervdsmServer.py", line 202, in setPortMirroring tc.setPortMirroring(networkName, ifaceName) File "/usr/share/vdsm/tc.py", line 36, in setPortMirroring qdisc_add_ingress(network) File "/usr/share/vdsm/tc.py", line 57, in qdisc_add_ingress _process_request(command) File "/usr/share/vdsm/tc.py", line 52, in _process_request raise TrafficControlException(retcode, msg) TrafficControlException: (2, 'error executing command "/sbin/tc qdisc add dev rhevm ingress" error: RTNETLINK answers: File exists\n') Thread-277295::DEBUG::2012-08-12 17:23:45,704::vm::581::vm.Vm::(_startUnderlyingVm) vmId=`1108cc0e-dd17-4944-9a58-9e59a29f1a2a`::_ongoingCreations released Thread-277295::ERROR::2012-08-12 17:23:45,705::vm::605::vm.Vm::(_startUnderlyingVm) vmId=`1108cc0e-dd17-4944-9a58-9e59a29f1a2a`::The vm start process failed Traceback (most recent call last): File "/usr/share/vdsm/vm.py", line 571, in _startUnderlyingVm self._run() File "/usr/share/vdsm/libvirtvm.py", line 1379, in _run self._domDependentInit() File "/usr/share/vdsm/libvirtvm.py", line 1265, in _domDependentInit supervdsm.getProxy().setPortMirroring(network, nic.name) File "/usr/share/vdsm/supervdsm.py", line 59, in __call__ return callMethod() File "/usr/share/vdsm/supervdsm.py", line 57, in <lambda> callMethod = lambda : getattr(self._supervdsmProxy._svdsm, self._funcName)(*args, **kwargs) File "<string>", line 2, in setPortMirroring File "/usr/lib64/python2.6/multiprocessing/managers.py", line 740, in _callmethod raise convert_to_error(kind, result) TrafficControlException: (2, 'error executing command "/sbin/tc qdisc add dev rhevm ingress" error: RTNETLINK answers: File exists\n') Thread-277295::DEBUG::2012-08-12 17:23:45,783::vm::921::vm.Vm::(setDownStatus) vmId=`1108cc0e-dd17-4944-9a58-9e59a29f1a2a`::Changed state to Down: (2, 'error executing command " /sbin/tc qdisc add dev rhevm ingress" error: RTNETLINK answers: File exists\n')