Bug 1397937

Summary:	[RFE] add specific error message to radosgw if pool creation fails due to 'osd pool default pg num' being smaller than 'osd pool default pgp num'
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Harald Klein <hklein>
Component:	RGW	Assignee:	Matt Benjamin (redhat) <mbenjamin>
Status:	CLOSED ERRATA	QA Contact:	Tejas <tchandra>
Severity:	low	Docs Contact:	Erin Donnelly <edonnell>
Priority:	low
Version:	2.1	CC:	cbodley, ceph-eng-bugs, edonnell, hnallurv, kbader, mbenjamin, owasserm, sweil, tserlin, uboppana, vumrao
Target Milestone:	rc	Keywords:	FutureFeature
Target Release:	2.3
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	RHEL: ceph-10.2.7-8.el7cp Ubuntu: ceph_10.2.7-9redhat1	Doc Type:	Enhancement
Doc Text:	.Improved error messaging in the Ceph Object Gateway Previously, when an invalid placement group configuration prevented the Ceph Object Gateway from creating any of its internal pools, the error message was insufficient, making it difficult to deduce the root cause of failure. The error message now suggests there might be an issue with the configuration such as an insufficient number of placement groups or inconsistent values set for the `pg_num` and `pgp_num` parameters, making it easier for the administrator to solve the problem.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-06-19 13:27:53 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:	1437916

Description Harald Klein 2016-11-23 15:40:10 UTC

Description of problem:

When the default "pg num" and "pgp num" settings in ceph.conf are misconfigured (e.g. due to a typo), rados gw can't create the pools and will print this error:

2016-11-23 11:07:07.383664 7efef6e229c0  0 ERROR:  storing info for 40f94cf3-796e-494f-bcec-655b91a58cc1: (34) Numerical result out of range
2016-11-23 11:07:07.383695 7efef6e229c0  0 create_default: error in create_default  zone params: (34) Numerical result out of range
2016-11-23 11:07:07.383705 7efef6e229c0  0 failure in zonegroup create_default: ret -34 (34) Numerical result out of range
2016-11-23 11:07:07.385338 7efef6e229c0 -1 Couldn't init storage provider (RADOS)
Version-Release number of selected component (if applicable):

A more specific error messages would help our customers to quickly identify the problem.

How reproducible:

Put conflicting settings into ceph.conf:
osd pool default pg num = 33
osd pool default pgp num = 34

Steps to Reproduce:
1. misconfigure
2. try to startup rados gw
3. watch error

Actual results:

ret -34 (34) Numerical result out of range

Expected results:

Some nice error message to point the customer to his misconfiguration

Additional info:

n/a

Comment 23 errata-xmlrpc 2017-06-19 13:27:53 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-2017:1497