Please turn the agent log level to debug on your kvm host, according the instruction in http://wiki.cloudstack.org/display/COMM/KVM+agent+debug Then attach the whole agent log.
> -----Original Message----- > From: Ahmad Saif [mailto:ahmad.abos...@gmail.com] > Sent: Sunday, July 22, 2012 12:55 AM > To: cloudstack-users@incubator.apache.org > Subject: Re: Failed to add tap interface > > Please find the Host and mgmt server logs attached > > thanks > > On 07/19/2012 08:10 PM, Edison Su wrote: > > Do you have more logs, both mgt server log and agent log? > > I put a wiki page about how to debug KVM issues: > > http://wiki.cloudstack.org/display/COMM/KVM+agent+debug > > > >> -----Original Message----- > >> From: Ahmad Saif [mailto:ahmad.abos...@gmail.com] > >> Sent: Thursday, July 19, 2012 12:59 AM > >> To: cloudstack-users@incubator.apache.org > >> Subject: Failed to add tap interface > >> > >> Hello there, > >> > >> I've problem starting one of my instances, and I got very weird > error > >> "Failed to add tap interface' > >> I've tried to restart the hypervisor, and force reconnect it but > with > >> no luck at all, > >> > >> Here is a error form the log file: > >> > >> WARN [cloud.vm.VirtualMachineManagerImpl] > >> (AgentManager-Handler-48:null) Cleanup failed due to Failed to add > >> tap interface to bridge 'cloudVirBr306': No such device DEBUG > >> [agent.manager.AgentAttache] (AgentManager-Handler-48:null) Seq > >> 11-2002067480: No more commands found DEBUG [agent.transport.Request] > >> (Job-Executor-23:job-233) Seq > >> 11-2002067480: Received: { Ans: , MgmtId: 20792849212874, via: 11, > Ver: > >> v1, Flags: 110, { StartAnswer } } > >> WARN [cloud.vm.VirtualMachineManagerImpl] (Job-Executor-23:job-233) > >> Cleanup failed due to Failed to add tap interface to bridge > >> 'cloudVirBr306': No such device > >> INFO [cloud.vm.VirtualMachineManagerImpl] (Job-Executor-23:job-233) > >> Unable to start VM on Host[-11-Routing] due to Failed to add tap > >> interface to bridge 'cloudVirBr306': No such device > >> > >> > >> Have any one faced issue like this before ? > >> > >> -- > >> Thanks
