Bug 1489064 – prevent creation (of pools with) too many PGs

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Bug 1489064 - prevent creation (of pools with) too many PGs

Summary:	prevent creation (of pools with) too many PGs

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Ceph Storage
Classification:	Red Hat
Component:	RADOS (Show other bugs)
Sub Component:
Version:	3.0
Hardware:	All All

Priority	high Severity high
Target Milestone:	rc
Target Release:	3.0
Assigned To:	Josh Durgin
QA Contact:	shylesh
Docs Contact:	Bara Ancincova

URL:
Whiteboard:
Keywords:	Reopened

Duplicates:	1491007 (view as bug list)
Depends On:
Blocks:	1494421
	Show dependency tree / graph

Reported:	2017-09-06 11:59 EDT by Sage Weil
Modified:	2017-12-05 18:42 EST (History)
CC List:	13 users (show)

See Also:
Fixed In Version:	RHEL: ceph-12.2.1-16.el7cp Ubuntu: ceph_12.2.1-18redhat1
Doc Type:	Bug Fix
Doc Text:	.The number of PGs per OSD is now limited Previously, it was possible to create pools that included a large number of placement groups (PGs) which could overload the cluster. This update introduces a new configuration option, `mon_max_pg_per_osd`, that limits the number of PGs per OSD to 200. Creating pools or adjusting the `pg_num` parameter now fails if the change would make the number of PGs per OSD exceed the configured limit. You can adjust this option in the Ceph configuration file. In addition, the `mon_pg_warn_max_per_osd` option has been removed.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-12-05 18:42:05 EST
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Github	ceph/ceph/pull/17814	None	None	None	2017-10-05 12:02 EDT
Red Hat Product Errata	RHBA-2017:3387	normal	SHIPPED_LIVE	Red Hat Ceph Storage 3.0 bug fix and enhancement update	2017-12-05 22:03:45 EST

Groups: None (edit)

Description Sage Weil 2017-09-06 11:59:30 EDT

Description of problem:

Users can create pools with lots of pgs and overload the cluster.  Prevent that via a config option that limits the pgs per osd.

See upstream PR https://github.com/ceph/ceph/pull/17427.  This will need to be backported to luminous and (maybe) 2.y.

Comment 2 Ian Colle 2017-10-04 11:31:08 EDT

https://github.com/ceph/ceph/pull/17814 is backport PR

Comment 6 Josh Durgin 2017-10-16 11:20:31 EDT


*** This bug has been marked as a duplicate of bug 1491007 ***

Comment 8 Josh Durgin 2017-10-16 11:30:00 EDT

*** Bug 1491007 has been marked as a duplicate of this bug. ***

Comment 18 shylesh 2017-10-25 05:28:03 EDT

Verified on 12.2.1-29

Comment 22 errata-xmlrpc 2017-12-05 18:42:05 EST

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-2017:3387

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