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Re: [libvirt] 答复: 答复: 答复: Help:C an libvirt restore several xen snapshots more faster at same ti me?



On 11/27/2017 09:26 PM, Chenjia (C) wrote:
Dear libvirt expert:
	Thanks for your replay, we are not restore from the same state file twice, only one time. we have 40 process, each process handle it's own VM and VM state file, and each process will do following things cycle:
		While(1)
		{
			Virsh restore state file
			do something in VM in 20s
			virsh destroy vm
		}
	so we have sure now: There is currently no way to reduce these 40 xen status files space.
	
	
	When we do the above things, we got a xen crash on xen-4.7.0, so we try to use the xen-4.8.2 and libvirt 2.5.0, and the crash problem is no longer exist, but we got a new problem:
	we add the <interface> in config fie of VM:
     		<interface type='bridge'>
       			<mac address='18:c5:8a:15:c1:39'/>
       			<source bridge='virbr0'/>
    		 </interface>
	When we use 'virsh create virsh_0.xml', we can't create the vm, and got follow error:
		2017-11-28 12:36:56.329+0000: 17489: error : libxlDomainStart:1280 : internal error: libxenlight failed to create new domain 'aap_0'
			error: Failed to create domain from virsh_0.xml
			error: internal error: libxenlight failed to create new domain 'aap_0'
	and in the /var/log/libvirt/libxl/libxl-driver.log there have a log:
		2017-11-28 20:36:53 CST libxl: error: libxl_exec.c:118:libxl_report_child_exitstatus: /etc/xen/scripts/vif-bridge online [17580] exited with error status 127

You need to determine why Xen's vif-bridge script failed. syslog should contain info about that.

Regards,
Jim


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