Bug 1575720
Summary: | Cinder's image volume cache sync lock prevents parallel image downloading | |||
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Product: | Red Hat OpenStack | Reporter: | Alan Bishop <abishop> | |
Component: | openstack-cinder | Assignee: | Alan Bishop <abishop> | |
Status: | CLOSED ERRATA | QA Contact: | Avi Avraham <aavraham> | |
Severity: | medium | Docs Contact: | Kim Nylander <knylande> | |
Priority: | medium | |||
Version: | 10.0 (Newton) | CC: | aavraham, abishop, cschwede, eharney, joflynn, knylande, nchandek, srevivo | |
Target Milestone: | --- | Keywords: | Triaged, ZStream | |
Target Release: | 9.0 (Mitaka) | |||
Hardware: | All | |||
OS: | All | |||
Whiteboard: | ||||
Fixed In Version: | openstack-cinder-8.1.1-20.el7ost | Doc Type: | Bug Fix | |
Doc Text: |
Cinder uses a synchronization lock to prevent duplicate entries in the volume image cache. The scope of the lock was too broad, and caused simultaneous requests to create a volume from an image to compete for the lock, even when the image cache was not enabled.
Simultaneous requests to create a volume from an image would be serialized, and not run in parallel.
The synchronization lock has been updated to minimize the scope of the lock, and to take effect only when the volume image cache is enabled.
Simultaneous requests to create a volume from an image run in parallel when the volume image cache is disabled. When the volume image cache is enabled, locking is minimized to ensure only a single entry is created in the cache.
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Story Points: | --- | |
Clone Of: | 1575130 | |||
: | 1575758 (view as bug list) | Environment: | ||
Last Closed: | 2018-07-05 12:31:02 UTC | Type: | Bug | |
Regression: | --- | Mount Type: | --- | |
Documentation: | --- | CRM: | ||
Verified Versions: | Category: | --- | ||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | ||
Cloudforms Team: | --- | Target Upstream Version: | ||
Embargoed: | ||||
Bug Depends On: | 1555188, 1572220, 1575130 | |||
Bug Blocks: | 1575758 |
Description
Alan Bishop
2018-05-07 18:14:28 UTC
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-2018:2136 |