Bug 1530665

Summary:	sync.error-log objects fill up with temporary EBUSY errors
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Ken Dreyer (Red Hat) <kdreyer>
Component:	RGW-Multisite	Assignee:	Matt Benjamin (redhat) <mbenjamin>
Status:	CLOSED ERRATA	QA Contact:	Vidushi Mishra <vimishra>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	3.0	CC:	cbodley, ceph-eng-bugs, ceph-qe-bugs, hnallurv, kdreyer, mbenjamin, tchandra, vimishra
Target Milestone:	z1
Target Release:	3.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	RHEL: ceph-12.2.1-42.el7cp Ubuntu: ceph_12.2.1-44redhat1xenial	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1527132	Environment:
Last Closed:	2018-03-08 15:51:04 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1527132

Description Ken Dreyer (Red Hat) 2018-01-03 15:34:37 UTC

+++ This bug was initially created as a clone of Bug #1527132 +++

Description of problem:

Multisite sync encounters temporary EBUSY errors in normal operation, and will gracefully retry the operations until success. These temporary errors get written to the sync.error-log objects (visible via 'radosgw-admin sync error list').

The 'radosgw-admin sync error list' command should only contain actual sync errors that could require admin intervention. Including temporary EBUSY errors only serves to waste space in rados and obscure the more serious sync errors.

Version-Release number of selected component (if applicable): RHCS 2.0 and later


How reproducible:

Easily reproducible, especially with multiple gateways per zone.

Steps to Reproduce:
1. Create a multisite configuration with two zones and two gateways each.
2. On master zone, create a bucket and upload some objects.
3. On secondary zone, wait a few minutes, then run 'radosgw-admin sync error list'.

Actual results:

The output of 'radosgw-admin sync error list' contains errors of the form:

"message": "failed to sync bucket instance: (16) Device or resource busy"

Expected results:

The output of 'radosgw-admin sync error list' should only contain real sync failures that would require admin intervention.

Additional info:

Comment 9 errata-xmlrpc 2018-03-08 15:51:04 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://access.redhat.com/errata/RHBA-2018:0474