Bug 1612623 - Crush can produce invalid mappings
Summary: Crush can produce invalid mappings
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat Storage
Component: RADOS
Version: 3.0
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: z2
: 3.2
Assignee: Brad Hubbard
QA Contact: ceph-qe-bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-08-06 01:47 UTC by Brad Hubbard
Modified: 2021-12-10 16:59 UTC (History)
8 users (show)

Fixed In Version: ceph-12.2.8-52.el7cp
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2019-04-05 05:02:55 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1593110 0 low CLOSED Ceph mgr daemon crashing after starting balancer module in automatic mode 2024-03-25 15:05:55 UTC
Red Hat Issue Tracker RHCEPH-2674 0 None None None 2021-12-10 16:59:18 UTC

Internal Links: 1593110

Description Brad Hubbard 2018-08-06 01:47:54 UTC 
Description of problem:

Under certain circumstances crush can produce invalid mappings as shown by these manager logs.

2018-06-20 12:21:57.552093 7fef326e3700 10  total_deviation 120.548 overfull 0,1,2,4,7,9,11,12,13,16,17,18,20,21,23,24,26,29 underfull [6,8,30,31,27,5,10,19,3,15,28]                                                                        
2018-06-20 12:21:57.552102 7fef326e3700 10  osd.24 move 6                                                                                                                                                                                    
2018-06-20 12:21:57.552112 7fef326e3700 10   trying 11.11                                                                                                                                                                                    
2018-06-20 12:21:57.552157 7fef326e3700 10   11.11 [24,25,0] -> [31,847218496,21924]                                                                                                                                                         
2018-06-20 12:21:57.552164 7fef326e3700 10   11.11 pg_upmap_items [24,31,25,847218496,0,21924]


Version-Release number of selected component (if applicable):
12.2.4-10.el7cp

Additional info:

Should be fixed by https://github.com/ceph/ceph/pull/21359 which did not make it into RHCS yet.
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