当有许多恢复正在进行时，虚拟机的并行恢复将失败（webvirtcloud）

Question

我正在webvirtcloud之上构建项目（webvirtcloud使用libvirt-python）

我有几根线。它们中的每一个都通过revertToSnapshot方法还原不同的虚拟机（VM）。如果有3个线程，那么一切都很顺利。如果有超过3个线程，那么在每个线程中，大约7秒后revertToSnapshot会失败，出现异常libvirt: XML-RPC error: Cannot recv data: Connection reset by peer。需要注意的是，尽管revertToSnapshot方法失败，但恢复过程将继续，VM将被恢复

我尝试创建10个到10个不同VM的连接，结果 获取虚拟机的状态。我的目的是检查是否可以同时创建10个连接。它工作正常

我试图在每个线程中创建新的连接。实现如下所示：

def main():
    ...
    # This is main thread code snippet
    t = threading.Thread(thread_job_funk, (arg1, agr2,))
    t.start()
    ...


def thread_job():
    ...
    connection = wvmInstance(host, login, passwd, conn, vname)
    connection.snapshot_revert("snapshot_name")  
    ...

我还尝试创建一个连接并在每个线程中使用它（是的，由于libvirt-python绑定描述，它是合法的）。实现如下所示：

vm_host_connection = wvmConnect(ip_addr, login, password, connection_type)

def main():
    ...
    # This is main thread code snippet
    t = threading.Thread(thread_job_funk, (arg1, agr2,))
    t.start()
    ...


def thread_job():
    ...
    global vm_host_connection 
    vir_domain_connection = vm_host_connection .get_instance(instance_name)
    snapshot = vir_domain.snapshotLookupByName(snapshot_name, 0)
    vir_domain.revertToSnapshot(snapshot, 0) 
    ...

然后我试图查看libvirtd（主机上的libvirt守护进程）日志，查看连接到keepalive机制的消息，但我没有发现任何东西。保留我复制问题期间的日志：

debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx3
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx4
info : virKeepAliveTimerInternal:136 : RPC_KEEPALIVE_TIMEOUT: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 countToDeath=5 idle=5
debug : virKeepAliveMessage:104 : Sending keepalive request to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx13
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:395 : Got keepalive request from client 0xxxxxxxxxxxx5
debug : virKeepAliveMessage:104 : Sending keepalive response to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxxx9
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:400 : Got keepalive response from client 0xxxxxxxxxxxx5
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx7
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx8
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx9
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx10
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx9
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx8
info : virKeepAliveTimerInternal:136 : RPC_KEEPALIVE_TIMEOUT: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 countToDeath=5 idle=5
debug : virKeepAliveMessage:104 : Sending keepalive request to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx11
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:395 : Got keepalive request from client 0xxxxxxxxxxxx5
debug : virKeepAliveMessage:104 : Sending keepalive response to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx12
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:400 : Got keepalive response from client 0xxxxxxxxxxxx5
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx3
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx7
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx12
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx4
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx12
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx7
info : virKeepAliveTimerInternal:136 : RPC_KEEPALIVE_TIMEOUT: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 countToDeath=5 idle=5
debug : virKeepAliveMessage:104 : Sending keepalive request to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx13
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:395 : Got keepalive request from client 0xxxxxxxxxxxx5
debug : virKeepAliveMessage:104 : Sending keepalive response to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx12
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:400 : Got keepalive response from client 0xxxxxxxxxxxx5
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx9
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx12
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx9
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx12
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx13
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx3
info : virKeepAliveTimerInternal:136 : RPC_KEEPALIVE_TIMEOUT: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 countToDeath=5 idle=5
debug : virKeepAliveMessage:104 : Sending keepalive request to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxxx8
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:395 : Got keepalive request from client 0xxxxxxxxxxxx5
debug : virKeepAliveMessage:104 : Sending keepalive response to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx11
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:400 : Got keepalive response from client 0xxxxxxxxxxxx5
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx4
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx12
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx3
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx7
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx3
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx4
info : virKeepAliveTimerInternal:136 : RPC_KEEPALIVE_TIMEOUT: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 countToDeath=5 idle=5
debug : virKeepAliveMessage:104 : Sending keepalive request to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0x5585245c7680
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:395 : Got keepalive request from client 0xxxxxxxxxxxx5
debug : virKeepAliveMessage:104 : Sending keepalive response to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx10
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:400 : Got keepalive response from client 0xxxxxxxxxxxx5
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx8
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx9
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx10
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx12
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx10
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx9
info : virKeepAliveTimerInternal:136 : RPC_KEEPALIVE_TIMEOUT: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 countToDeath=5 idle=5
debug : virKeepAliveMessage:104 : Sending keepalive request to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx13
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:395 : Got keepalive request from client 0xxxxxxxxxxxx5
debug : virKeepAliveMessage:104 : Sending keepalive response to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxxx7
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:400 : Got keepalive response from client 0xxxxxxxxxxxx5
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx3
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx8
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx7
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx4
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx7
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx8
info : virKeepAliveTimerInternal:136 : RPC_KEEPALIVE_TIMEOUT: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 countToDeath=5 idle=5
debug : virKeepAliveMessage:104 : Sending keepalive request to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0x55852460af60
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:395 : Got keepalive request from client 0xxxxxxxxxxxx5
debug : virKeepAliveMessage:104 : Sending keepalive response to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx12
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:400 : Got keepalive response from client 0xxxxxxxxxxxx5
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx10
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx3
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx12
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx9
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxx12
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx1, client=0xxxxxxxxxxxx2, msg=0xxxxxxxxxxxx3
info : virKeepAliveTimerInternal:136 : RPC_KEEPALIVE_TIMEOUT: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 countToDeath=5 idle=5
debug : virKeepAliveMessage:104 : Sending keepalive request to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxx13
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=1
debug : virKeepAliveCheckMessage:395 : Got keepalive request from client 0xxxxxxxxxxxx5
debug : virKeepAliveMessage:104 : Sending keepalive response to client 0xxxxxxxxxxxx5
info : virKeepAliveMessage:107 : RPC_KEEPALIVE_SEND: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:374 : ka=0xxxxxxxxxxxx5, client=0xxxxxxxxxxxx5, msg=0xxxxxxxxxxxx4
info : virKeepAliveCheckMessage:391 : RPC_KEEPALIVE_RECEIVED: ka=0xxxxxxxxxxxx5 client=0xxxxxxxxxxxx5 prog=xxxxxxxxx5 vers=1 proc=2
debug : virKeepAliveCheckMessage:400 : Got keepalive response from client 0xxxxxxxxxxxx5

然后我尝试查找libvirtd的错误和警告，但在复制问题时没有任何错误或警告

当线程数超过3个时，为什么方法失败

注:

• 快照的内部使用libvirt-python的revertToSnapshot方法
• 据我所知，webvirtcloud是使用libvirt python构建的

附言：请随时询问更多信息

Answer 1

虽然底层libvirt库is touted to be thread-safe，但webvirtcloud{a2}的部分似乎：

# to-do: may also need some locking to ensure to not connect simultaniously in 2 threads

可能会在那边提出问题https://github.com/retspen/webvirtcloud/issues

Answer 2

libvirt.so库和相关的python绑定是完全线程安全的。您只需要打开一个连接，就可以从多个线程同时使用它，并且它将根据需要进行同步

此错误消息和行为使我认为libvirtd守护程序keepalive看门狗正在（错误地）启动，从而关闭与libvirt的连接

试着跑步

  virt-admin daemon-log-filters 1:keepalive
  virt-admin daemon-log-outputs 1:file:/var/log/libvirt/libvirtd.log

然后重现问题并查看日志消息是否显示keepalive触发

如果是这样，那么问题可能实际上在libvirtd守护进程中