Description of problem:

it seems jsonrpc is little bit spammy and i'm not sure the content of this INFO-level messages are interesting for "end-user" (eg. sysadmin).

so in cca 5 hours i got 1331 such messages in log.

[root@dell-r210ii-13 ~]# awk 'NR == 1 { print $1,$2 }' /var/log/vdsm/vdsm.log
Thread-12::DEBUG::2017-02-02 09:01:08,065::check::296::storage.check::(_start_process)
[root@dell-r210ii-13 ~]# awk 'END { print $1,$2 }' /var/log/vdsm/vdsm.log
2017-02-02 14:19:11,286
[root@dell-r210ii-13 ~]# egrep -c 'INFO  \(jsonrpc/[0-9]\) \[jsonrpc\.JsonRpcServer\] RPC call' /var/log/vdsm/vdsm.log
1331
[root@dell-r210ii-13 ~]# egrep 'INFO  \(jsonrpc/[0-9]\) \[jsonrpc\.JsonRpcServer\] RPC call' /var/log/vdsm/vdsm.log | tail
2017-02-02 14:18:42,916 INFO  (jsonrpc/5) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.00 seconds (__init__:515)
2017-02-02 14:18:55,152 INFO  (jsonrpc/6) [jsonrpc.JsonRpcServer] RPC call Host.getStats succeeded in 0.01 seconds (__init__:515)
2017-02-02 14:18:57,122 INFO  (jsonrpc/7) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.00 seconds (__init__:515)
2017-02-02 14:18:58,923 INFO  (jsonrpc/0) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.00 seconds (__init__:515)
2017-02-02 14:19:11,286 INFO  (jsonrpc/2) [jsonrpc.JsonRpcServer] RPC call Host.getStats succeeded in 0.00 seconds (__init__:515)
2017-02-02 14:19:12,139 INFO  (jsonrpc/1) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.00 seconds (__init__:515)
2017-02-02 14:19:14,929 INFO  (jsonrpc/3) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.00 seconds (__init__:515)
2017-02-02 14:19:26,693 INFO  (jsonrpc/4) [jsonrpc.JsonRpcServer] RPC call Host.getStats succeeded in 0.01 seconds (__init__:515)
2017-02-02 14:19:27,158 INFO  (jsonrpc/5) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.00 seconds (__init__:515)
2017-02-02 14:19:30,936 INFO  (jsonrpc/6) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.00 seconds (__init__:515)
[root@dell-r210ii-13 ~]# rpm -q vdsm
vdsm-4.19.4-1.el7ev.x86_64


Version-Release number of selected component (if applicable):
vdsm-4.19.4-1.el7ev.x86_64

How reproducible:
1 in 1

Steps to Reproduce:
1. just happens with this vdsm version
2.
3.

Actual results:
vdsm.log is spammed with jsonrpc messages

Expected results:
imo INFO level messages should be somehow end-user readable and of his interest

Additional info:
this host is connected to 4.0 engine right now, 4.0.6.3-0.1.el7ev