Bug #16096: librbd: feature updates are not seen by mirror_image_enable() - rbd - Ceph

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Bug #16096

closed

librbd: feature updates are not seen by mirror_image_enable()

Added by Jon Bernard almost 8 years ago. Updated almost 8 years ago.

Status:

Resolved

Priority:

High

Assignee:

Target version:

% Done:

Source:

other

Tags:

Backport:

jewel

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

ceph-qa-suite:

Pull request ID:

Crash signature (v1):

Crash signature (v2):

Description

I'm making two calls to librbd:

1. feature_update(JOURNALING)
   2. mirror_image_enable()

The mirror call [2] fails, reporting that journaling is not enabled. But the rbd client confirms that the feature_update() call did succeed in setting the journaling flag. If before line [2], I add a call to fetch the existing image features, then the mirror_image_enable call succeeds.

It sounds like mirror_image_enable is getting the update but not re-reading the header, while features() does the usual check if there are pending notifications to process before fetching the features.

If this isn't a high-priority issue, would you mind if I work on this?

Related issues 1 (0 open — 1 closed)

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Updated by Josh Durgin almost 8 years ago

Project changed from Ceph to rbd
Subject changed from RBD,MIRROR: feature updates are not seen by mirror_image_enable() to librbd: feature updates are not seen by mirror_image_enable()
Priority changed from Normal to High