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Bug #37640
closedCan not rollback from 12.2.1 to 12.2.0 for CEPH_MON_FEATURE_INCOMPAT_LUMINOUS
Status:
Resolved
Priority:
Normal
Assignee:
-
Category:
-
Target version:
-
% Done:
0%
Source:
Tags:
Backport:
Regression:
No
Severity:
3 - minor
Reviewed:
Affected Versions:
ceph-qa-suite:
Component(RADOS):
Pull request ID:
Crash signature (v1):
Crash signature (v2):
Description
As 12.2.1 and higher version has mon feature CEPH_MON_FEATURE_INCOMPAT_LUMINOUS,we can not rollback from 12.2.1 to 12.2.0.We will find the err below in ceph-mon log:
-1 ERROR: on disk data includes unsupported features: compat={},rocompat={},rocompat={},incompat={9=luminous ondisk layout}
- error checking features: (1) Uperation not permitted
This feature is add in this patch:https://github.com/ceph/ceph/pull/17333/
What's more,there is CEPH_MON_FEATURE_INCOMPAT_MIMIC in MIMIC and CEPH_MON_FEATURE_INCOMPAT_NAUTILUS in NAUTILUS,it means we can not rollback from NAUTILUS to MIMIC.
Is this the original design intention?Or I understand wrong？
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