Bug 1471939 – pre-jewel "osd rm" incrementals are misinterpreted

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Bug 1471939 - pre-jewel "osd rm" incrementals are misinterpreted

Summary:	pre-jewel "osd rm" incrementals are misinterpreted

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Ceph Storage
Classification:	Red Hat
Component:	RADOS (Show other bugs)
Sub Component:
Version:	1.3.3
Hardware:	x86_64 Linux

Priority	medium Severity high
Target Milestone:	rc
Target Release:	2.4
Assigned To:	Josh Durgin
QA Contact:	ceph-qe-bugs
Docs Contact:	Bara Ancincova

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:	1473436 1479701
	Show dependency tree / graph

Reported:	2017-07-17 13:47 EDT by Vikhyat Umrao
Modified:	2017-10-18 14:13 EDT (History)
CC List:	8 users (show)

See Also:
Fixed In Version:	RHEL: ceph-2:10.2.7-39.el7cp Ubuntu: ceph_10.2.7-38redhat1
Doc Type:	Bug Fix
Doc Text:	.CRUSH calculations for removed OSDs match on kernel clients and the cluster When an OSD was removed with the `ceph osd rm` command, but was still present in the CRUSH map, the CRUSH calculations for that OSD on kernel clients and the cluster did not match. Consequently, kernel clients returned I/O errors. The mismatch between client and server behavior has been fixed and kernel clients do not return the I/O errors anymore in this situation.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2017-10-17 14:12:51 EDT
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
Ceph Project Bug Tracker	19119	None	None	None	2017-07-17 14:23 EDT
Ceph Project Bug Tracker	19210	None	None	None	2017-07-17 14:22 EDT
Red Hat Product Errata	RHBA-2017:2903	normal	SHIPPED_LIVE	Red Hat Ceph Storage 2.4 enhancement and bug fix update	2017-10-17 18:12:30 EDT

Groups: None (edit)

Description Vikhyat Umrao 2017-07-17 13:47:46 EDT

Description of problem:
pre-jewel "osd rm" incrementals are misinterpreted
http://tracker.ceph.com/issues/19119

Upstream PR: https://github.com/ceph/ceph/pull/13730
Release notes:https://github.com/ceph/ceph/pull/13731/files


* There was a bug introduced in Jewel (#19119) that broke the mapping behavior
  when an "out" OSD that still existed in the CRUSH map was removed with 'osd rm'. This could result in 'misdirected op' and other errors.  The bug is now fixed, but the fix itself introduces the same risk because the behavior may vary between clients and OSDs.  

To avoid problems, please ensure that all OSDs are removed from the CRUSH map before deleting them.  That is, be sure to do::

   ceph osd crush rm osd.123

before::

   ceph osd rm osd.123


We have a Kernel RBD RHEL 7.4 bug https://bugzilla.redhat.com/show_bug.cgi?id=1427556 which depends on this bug.


Version-Release number of selected component (if applicable):
Red Hat Ceph Storage 1.3.3

Comment 4 Ian Colle 2017-08-16 17:49:36 EDT

Moving to 2.5 until 2.4 proper is released.

Comment 14 Josh Durgin 2017-10-12 13:46:04 EDT

Looks good, thanks Bara!

Comment 16 errata-xmlrpc 2017-10-17 14:12:51 EDT

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-2017:2903

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