Bug 1371509

Summary: [GSS] Tracker for RHCS2.1 to track the additional leap second on December 31st 2016
Product: Red Hat Ceph Storage Reporter: Vimal Kumar <vikumar>
Component: RADOSAssignee: Vimal Kumar <vikumar>
Status: CLOSED NOTABUG QA Contact: ceph-qe-bugs <ceph-qe-bugs>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 2.0CC: ceph-eng-bugs, dzafman, kchai, kdreyer, nlevine
Target Milestone: rcKeywords: Tracking
Target Release: 2.2   
Hardware: x86_64   
OS: Linux   
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Last Closed: 2016-12-07 18:40:25 UTC Type: Bug
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Description Vimal Kumar 2016-08-30 11:43:46 UTC 
* Description of problem:

Due to the differences in the earth's rotation speeds, the UTC time supported by the various atomic clocks over the world tends to go out of sync with the earth's time. Hence, changes are needed in the UTC time in order to make up for the difference.

An additional second also known as 'leap second' is incorporated in UTC in order to make up for the changes.

This year on December 31st, 2016, an extra second would be introduced to make up for the time drift. 

RHCS/Ceph won't be necessarily affected by the drift since we always suggest NTP to be running on the cluster nodes. NTP should introduce the change of the additional second to the cluster nodes. 

This bug is opened to track any suggestions or tests that need to be done for RHCS in the light of the upcoming introduction of the additional second on December 31st, 2016. 

Ceph nodes not using NTP will have to use the updated tzdata package being released later which takes care of the introduction of the additional second.

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

Red Hat Ceph Storage 2.0