使用Libvirt Python createXMLFrom克隆卷会在读取数据时导致文件结束：输入/输出错误

Question

我正在尝试使用以下方法克隆卷：

libvirt_conn = libvirt.openAuth(<qemu_addr>, <auth>, 0)
pool = libvirt_conn.storagePoolLookupByName(<pool_name>)
original_volume = pool.storageVolLookupByName(<original_volume_name>)
new_volume_xml = <xml_string>
new_volume = pool.createXMLFrom(new_volume_xml, original_volume)

当我运行此命令时，会出现以下错误： End of file while reading data: Input/output error

当我尝试时：

libvirt_conn = libvirt.openAuth(<qemu_addr>, <auth>, 0)
pool = libvirt_conn.storagePoolLookupByName(<pool_name>)
original_volume = pool.storageVolLookupByName(<original_volume_name>)
new_volume_xml = <xml_string>
try:
    new_volume = pool.createXMLFrom(new_volume_xml, original_volume)
except:
    <next libvirt command>

我得到一个client socket is closed错误。我尝试过用以下方法编辑/etc/libvirt/libvirtd.conf：

min_workers = 5
max_workers = 20
log_level = 1
log_filters="1:libvirt 1:util 1:qemu"
log_outputs="1:file:/var/log/libvirt/libvirtd.log"
keepalive_interval = -1

当我重新启动libvirtd和tail/var/log/libvirt/libvirtd.log时，我没有看到任何有用的东西。我的感觉是套接字正在关闭，因为克隆卷需要很长时间，但我不确定如何让libvirt/qemu套接字保持更长时间的打开。这可能吗