Bug #11079: crushtool -d zeroes the osd weights in straw2 buckets - Ceph - Ceph

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Bug #11079

closed

crushtool -d zeroes the osd weights in straw2 buckets

Added by Dan van der Ster about 9 years ago. Updated about 9 years ago.

Status:

Resolved

Priority:

Urgent

Assignee:

Category:

Target version:

% Done:

Source:

other

Tags:

Backport:

Regression:

Severity:

2 - major

Reviewed:

Affected Versions:

v0.93 - Last Hammer Sprint

ceph-qa-suite:

Pull request ID:

Crash signature (v1):

Crash signature (v2):

Description

Using: ceph-0.93-59.g3878878.el6.x86_64.rpm

Starting with crush.txt, having only straw buckets, we change the first host to be straw2 (see crush.txt2). Then we do:

crushtool -c crush.txt2 -o crush.map2
crushtool -d crush.map2 -o crush.txt3

In crush.txt3 you see that all the OSDs in the straw2 host become 0.000.

Files

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crush.txt.gz (62 KB) crush.txt.gz	before straw2	Dan van der Ster, 03/10/2015 10:43 AM
crush.txt2.gz (62 KB) crush.txt2.gz	changed first host to be straw2	Dan van der Ster, 03/10/2015 10:43 AM
crush.txt3.gz (62 KB) crush.txt3.gz	after compile then decompile all straw2 osds have 0.00 weight	Dan van der Ster, 03/10/2015 10:43 AM

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Updated by Dan van der Ster about 9 years ago

Actually, we also observe the zero weighted OSDs just by setcrushmap'ing the crush.map2. So it's not only crushtool that is affected here. After ceph osd setcrushmap -i crush.map2 we observe (with ceph osd tree) the items in the straw2 buckets get a 0 weight.

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