Bug 1360990 - [z-stream clone - 4.0.4] VMs are not reported as non-responding even though qemu process does not responds.
Summary: [z-stream clone - 4.0.4] VMs are not reported as non-responding even though ...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Virtualization Manager
Classification: Red Hat
Component: vdsm
Version: 3.6.7
Hardware: Unspecified
OS: Unspecified
medium
high
Target Milestone: ovirt-4.0.4
: 4.0.4
Assignee: Francesco Romani
QA Contact: sefi litmanovich
URL:
Whiteboard:
Depends On: 1357798
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-07-28 06:21 UTC by rhev-integ
Modified: 2020-07-16 08:53 UTC (History)
13 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
This update fixes a error in the monitoring code that caused the VDSM to incorrectly report that a QEMU process has recovered and is responsive after being unavailable for a short amount of time, while it was actually unresponsive.
Clone Of: 1357798
Environment:
Last Closed: 2016-09-28 22:17:25 UTC
oVirt Team: Virt
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:1950 0 normal SHIPPED_LIVE vdsm 4.0.4 bug fix and enhancement update 2016-09-29 01:18:46 UTC
oVirt gerrit 61309 0 master MERGED tests: sampling: add FakeClock helper 2016-07-28 06:21:17 UTC
oVirt gerrit 61310 0 master MERGED vm: periodic: fix stats age reporting 2016-08-02 10:11:05 UTC
oVirt gerrit 61420 0 master MERGED virt: sampling: add is_empty() method to StatsSample 2016-08-02 10:06:49 UTC
oVirt gerrit 61820 0 ovirt-4.0 MERGED tests: sampling: add FakeClock helper 2016-08-17 10:21:55 UTC
oVirt gerrit 61821 0 ovirt-4.0 MERGED virt: sampling: add is_empty() method to StatsSample 2016-08-17 10:22:02 UTC
oVirt gerrit 61822 0 ovirt-4.0 MERGED vm: periodic: fix stats age reporting 2016-08-17 10:22:15 UTC

Comment 1 sefi litmanovich 2016-09-05 08:53:20 UTC 
Verified with rhevm-4.0.4-0.1.el7ev.noarch, host: vdsm-4.18.12-1.el7ev.x86_64.


Verified according to steps in description.
Result after kill -19 <qemu-pid> :
vdsClient is reporting the vm in state 'UP' with monitorResponse = -1. In engine the vm is reported as not responding which is the expected result.
Status isn't changed after several minutes, so no monitoring issues.
When resuming the process with kill -CONT <qemu-pid> monitorResponse = 0 and vm is back up in engine.
Comment 3 errata-xmlrpc 2016-09-28 22:17:25 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-1950.html
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