Change in vdsm[ovirt-3.3]: domainMonitor: Improve logging

[Nir Soffer]

Hello Ayal Baron, Sergey Gotliv, Ohad Basan, Allon Mureinik,

I'd like you to do a code review.  Please visit

    http://gerrit.ovirt.org/21936

to review the following change.

Change subject: domainMonitor: Improve logging
......................................................................

domainMonitor: Improve logging

We have logs in domain monitor thread, and we can see when a monitor
starts or stops, but we don't have any info which thread triggered the
operation.  This patch adds info level log messages when starting and
stopping domain monitoring, revealing the caller thread.

Change-Id: I20feb40b097fa65ebebf851e33c051fc184ff029
Relates-To: https://bugzilla.redhat.com/1032925
Signed-off-by: Nir Soffer <nsoffer(a)redhat.com&gt;
Reviewed-on: http://gerrit.ovirt.org/21904
Reviewed-by: Sergey Gotliv <sgotliv(a)redhat.com&gt;
Reviewed-by: Allon Mureinik <amureini(a)redhat.com&gt;
Reviewed-by: Ohad Basan <obasan(a)redhat.com&gt;
Reviewed-by: Ayal Baron <abaron(a)redhat.com&gt;
---
M vdsm/storage/domainMonitor.py
1 file changed, 3 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.ovirt.org:29418/vdsm refs/changes/36/21936/1

diff --git a/vdsm/storage/domainMonitor.py b/vdsm/storage/domainMonitor.py
index ffa5e00..ac01e8b 100644
--- a/vdsm/storage/domainMonitor.py
+++ b/vdsm/storage/domainMonitor.py
@@ -90,6 +90,7 @@
         if sdUUID in self._domains:
             return
 
+        self.log.info("Start monitoring %s", sdUUID)
         domainThread = DomainMonitorThread(weakref.proxy(self),
                                            sdUUID, hostId, self._interval)
         domainThread.start()
@@ -102,6 +103,7 @@
         # Eg: when a domain is detached the domain monitor is stopped and
         # the host id is released. If the monitor didn't actually exit it
         # might respawn a new acquire host id.
+        self.log.info("Stop monitoring %s", sdUUID)
         try:
             self._domains[sdUUID].stop()
         except KeyError:
@@ -113,6 +115,7 @@
         return self._domains[sdUUID].getStatus()
 
     def close(self):
+        self.log.info("Stopping domain monitors")
         for sdUUID in self._domains.keys():
             self.stopMonitoring(sdUUID)
 


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Gerrit-MessageType: newchange
Gerrit-Change-Id: I20feb40b097fa65ebebf851e33c051fc184ff029
Gerrit-PatchSet: 1
Gerrit-Project: vdsm
Gerrit-Branch: ovirt-3.3
Gerrit-Owner: Nir Soffer <nsoffer(a)redhat.com&gt;
Gerrit-Reviewer: Allon Mureinik <amureini(a)redhat.com&gt;
Gerrit-Reviewer: Ayal Baron <abaron(a)redhat.com&gt;
Gerrit-Reviewer: Ohad Basan <obasan(a)redhat.com&gt;
Gerrit-Reviewer: Sergey Gotliv <sgotliv(a)redhat.com&gt;