Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

Bug 1366140

Summary:	TestOnly: Extra leap second on 31st of December 2016
Product:	[oVirt] ovirt-engine	Reporter:	Martin Perina <mperina>
Component:	General	Assignee:	Martin Perina <mperina>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Petr Kubica <pkubica>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	4.0.0	CC:	bugs, gklein, lsurette, lsvaty, mgoldboi, oourfali, pstehlik, rbalakri, Rhev-m-bugs, srevivo, yaniwang, ycui, ykaul
Target Milestone:	ovirt-4.0.5	Keywords:	TestOnly, ZStream
Target Release:	4.0.5	Flags:	mperina: ovirt-4.0.z? rule-engine: planning_ack? mperina: devel_ack+ lsvaty: testing_ack+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1369749 (view as bug list)		Environment:
Last Closed:	2017-01-18 07:35:22 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	Infra	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1356098
Bug Blocks:	1369749

Description Martin Perina 2016-08-11 07:48:50 UTC

On December 31st 2016 at precisely 23:59:59, the world’s atomic clocks will pause for a single second.

Or, to be more precise, they’ll change to the uncharted time of 23:59:60 before ticking over to the more worldly hour of 00:00:00 on the morning of January 1st, 2017.

This addition of a leap second, announced by the Paris Observatory this week, is being added to keep terrestrial clocks in step with the vagaries of astronomical time in this case, the slowing of the Earth’s rotation. 


Official reference from INTERNATIONAL EARTH ROTATION AND REFERENCE SYSTEMS SERVICE (IERS) 
https://hpiers.obspm.fr/iers/bul/bulc/bulletinc.52

Comment 2 Martin Perina 2016-09-29 13:21:47 UTC

Moving bug to oVirt as requrested

Comment 3 Red Hat Bugzilla Rules Engine 2016-09-29 13:21:57 UTC

Bug tickets must have version flags set prior to targeting them to a release. Please ask maintainer to set the correct version flags and only then set the target milestone.

Comment 4 Petr Kubica 2016-10-27 12:08:01 UTC

Packaged tested, but leap second not found. Waiting for response from developers on tzdata.

#rpm -qa | grep tzdata
tzdata-java-2016h-1.el7.noarch
joda-time-2.2-3.tzdata2013c.el7.noarch
tzdata-2016h-1.el7.noarc
# ls -l /etc/localtime
lrwxrwxrwx. 1 root root 23 31. pro 23.59 /etc/localtime -> /usr/share/zoneinfo/UTC
# zdump -v right/UTC | grep Sat.Dec.31.*2016
right/UTC  Sat Dec 31 23:59:60 2016 UTC = Sat Dec 31 23:59:60 2016 UTC isdst=0 gmtoff=0
# timedatectl set-time '2016-12-31 23:59:58'
# while sleep 0.1 ; do date -Ins ; done

2016-12-31T23:59:58,871628773+0000
2016-12-31T23:59:58,976635104+0000
2016-12-31T23:59:59,081282339+0000
2016-12-31T23:59:59,185782403+0000
2016-12-31T23:59:59,290251390+0000
2016-12-31T23:59:59,394727934+0000
2016-12-31T23:59:59,499110085+0000
2016-12-31T23:59:59,603719479+0000
2016-12-31T23:59:59,708188036+0000
2016-12-31T23:59:59,812603441+0000
2016-12-31T23:59:59,917200989+0000
2017-01-01T00:00:00,021682486+0000
2017-01-01T00:00:00,126340360+0000
2017-01-01T00:00:00,231273968+0000
2017-01-01T00:00:00,335712105+0000
2017-01-01T00:00:00,440249463+0000
2017-01-01T00:00:00,544633160+0000
2017-01-01T00:00:00,649209988+0000
2017-01-01T00:00:00,754083045+0000
2017-01-01T00:00:00,858562959+0000
2017-01-01T00:00:00,963070327+0000
2017-01-01T00:00:01,073035637+0000

Comment 5 Petr Kubica 2016-11-03 13:13:30 UTC

Verified in 4.0.5-5
vdsm-4.18.15.2-1.el7ev.x86_64
rhevm-4.0.5.4-0.1.el7ev.noarch

Tested flows:
- normal running with many VMs
- async operations during leap second (migrating, created snapshot, template...)
- VM under load

Tested env:
- time was set 5 minut before and watching behavior for 20 minutes (I/O, cpu, memory - checking unexpected behavior)
- used timezone UTC
- checking log after every tested flow