kvm创建虚拟机流程（1）

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2.1 创建虚拟机
#0 virDomainDefineXML (conn=0x696e80,
    xml=0x697b90 "<domain type='kvm'>\n <name>kvm_win7</name>\n <memory>2097152</memory>\n <currentMemory>2097152</currentMemory>\n <vcpu>2</vcpu>\n <os>\n    <type arch='x86_64' machine='pc'>hvm</type>\n    <boot dev='c"...)
    at libvirt.c:7897
#1 0x0000000000427590 in cmdDefine (ctl=0x7fffffffe240,
    cmd=<optimized out>) at virsh.c:2696
#2 0x000000000041cd1e in vshCommandRun (ctl=0x7fffffffe240, cmd=0x696890)
    at virsh.c:18449
#3 0x000000000042e2d6 in main (argc=3, argv=0x7fffffffe498)
    at virsh.c:20052

remoteDomainDefineXML

#0 virDomainDefineXML (conn=0x7f7a88047160,
    xml=0x7f7a6c000a30 "<domain type='kvm'>\n <name>kvm_win7</name>\n <memory>2097152</memory>\n <currentMemory>2097152</currentMemory>\n <vcpu>2</vcpu>\n <os>\n    <type arch='x86_64' machine='pc'>hvm</type>\n    <boot dev='c"...) at libvirt.c:7897
#1 0x00000000004486dd in remoteDispatchDomainDefineXML (server=0x7bf4e0,
    client=0x7c59d0, msg=0x7ca880, rerr=0x7f7a914c8bb0,
    args=0x7f7a6c001d70, ret=0x7f7a6c001dd0) at remote_dispatch.h:1010
#2 0x00000000004487f1 in remoteDispatchDomainDefineXMLHelper (
    server=0x7bf4e0, client=0x7c59d0, msg=0x7ca880, rerr=0x7f7a914c8bb0,
    args=0x7f7a6c001d70, ret=0x7f7a6c001dd0) at remote_dispatch.h:990
#3 0x00007f7a97e3076a in virNetServerProgramDispatchCall (prog=0x7ca6d0,
    server=0x7bf4e0, client=0x7c59d0, msg=0x7ca880)
    at rpc/virnetserverprogram.c:416
#4 0x00007f7a97e30ba7 in virNetServerProgramDispatch (prog=0x7ca6d0,
    server=0x7bf4e0, client=0x7c59d0, msg=0x7ca880)
    at rpc/virnetserverprogram.c:289
#5 0x00007f7a97e2bc18 in virNetServerHandleJob (jobOpaque=0x783660,
    opaque=0x7bf4e0) at rpc/virnetserver.c:168
#6 0x00007f7a97d37550 in virThreadPoolWorker (opaque=0x7807f0)
    at util/threadpool.c:144
#7 0x00007f7a97d36a71 in virThreadHelper (data=0x780750)
    at util/threads-pthread.c:161
#8 0x00007f7a9542df05 in start_thread () from /lib64/libpthread.so.0
#9 0x00007f7a94d6953d in clone () from /lib64/libc.so.6