Fix performance glitch while sorting image locations #88
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Some of the available glance stores like file, cinder etc has capability to reuse already initiated driver (DRIVER_REUSABLE = 0b01000000). In Caracal we have added a feature to sort image locations based on store weight. As RBD driver of glance does not have this reuse capability, during image list API call it initializes the RBD driver for each of the available image which is causing noticable delay in list call. To avoid this, using new interface added in glance_store which will directly get the weight of the store from memory and return it back to user. Depends-On: https://review.opendev.org/c/openstack/glance_store/+/940531 Closes-Bug: #2086675 Change-Id: I662ba19697e03917ca999920ea7be93a0b2a8296 (cherry picked from commit ce537e073b2e7efb332d719bb45bf20c403c140a)
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This PR depends on stackhpc/requirements#70 |
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Some of the available glance stores like file, cinder etc has capability to reuse already initiated driver (DRIVER_REUSABLE = 0b01000000). In Caracal we have added a feature to sort image locations based on store weight. As RBD driver of glance does not have this reuse capability, during image list API call it initializes the RBD driver for each of the available image which is causing noticable delay in list call.
To avoid this, using new interface added in glance_store which will directly get the weight of the store from memory and return it back to user.
Depends-On: stackhpc/glance_store#3
Closes-Bug: #2086675
Change-Id: I662ba19697e03917ca999920ea7be93a0b2a8296 (cherry picked from commit ce537e073b2e7efb332d719bb45bf20c403c140a)