Created attachment 1676413 [details]
vdsm.log

Description of problem:

During of running flow of creating VM, CreateSnapshot(*30), DeleteVM
get the error in vdsm.log 

Version-Release number of selected component (if applicable):

rhv-release-4.3.5-1-001
vdsm-4.30.24-2.el7ev.x86_64
ovirt-host-4.3.4-1

How reproducible:


Steps to Reproduce:
1. Running 50 Users concurrency
2. CreateVM, CreateSnapshots(*30), DeleteVM
3. Run ~5 cycles (~20Hours)

Actual results:
ERROR messages

Expected results:
No Errors





ERROR MESsAGE:
020-04-02 13:08:03,068+0000 ERROR (jsonrpc/2) [jsonrpc.JsonRpcServer] Internal server error (__init__:350)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/yajsonrpc/__init__.py", line 345, in _handle_request
    res = method(**params)
  File "/usr/lib/python2.7/site-packages/vdsm/rpc/Bridge.py", line 198, in _dynamicMethod
    result = fn(*methodArgs)
  File "<string>", line 2, in getStats
  File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 50, in method
    ret = func(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/API.py", line 1435, in getStats
    multipath=True)}
  File "/usr/lib/python2.7/site-packages/vdsm/host/api.py", line 50, in get_stats
    decStats = stats.produce(first_sample, last_sample)
  File "/usr/lib/python2.7/site-packages/vdsm/host/stats.py", line 72, in produce
    stats.update(get_interfaces_stats())
  File "/usr/lib/python2.7/site-packages/vdsm/host/stats.py", line 154, in get_interfaces_stats
    return net_api.network_stats()
  File "/usr/lib/python2.7/site-packages/vdsm/network/api.py", line 63, in network_stats
    return netstats.report()
  File "/usr/lib/python2.7/site-packages/vdsm/network/netstats.py", line 32, in report
    stats = link_stats.report()
  File "/usr/lib/python2.7/site-packages/vdsm/network/link/stats.py", line 34, in report
    stats[i.device] = i.statistics()
  File "/usr/lib/python2.7/site-packages/vdsm/network/link/iface.py", line 232, in statistics
    'state': 'up' if self.is_oper_up() else 'down',
  File "/usr/lib/python2.7/site-packages/vdsm/network/link/iface.py", line 193, in is_oper_up
    properties = self.properties()
  File "/usr/lib/python2.7/site-packages/vdsm/network/link/iface.py", line 165, in properties
    info = link.get_link(self._dev)
  File "/usr/lib/python2.7/site-packages/vdsm/network/netlink/link.py", line 38, in get_link
    name)
IOError: [Errno 19] vnet6 is not present in the system




Additional info: