500 error when deleting an in-use image from Ceph

[Feilong Wang]

If user create an image with Ceph backend driver, and then create an instance based on the image. As a result, user will run into a 500 error.

After investigation, seems we're raising exception.InUseByStore() at the https://github.com/openstack/glance/blob/master/glance/store/rbd.py#L290 if there image is still in use. But no code to catch the error at REST API layer.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/108289

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/108289
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=4d75cce7226db44533d891d7524ef28793734a7c
Submitter: Jenkins
Branch: master

commit 4d75cce7226db44533d891d7524ef28793734a7c
Author: Fei Long Wang <email address hidden>
Date: Mon Jul 21 18:47:37 2014 +1200

    Catch exception.InUseByStore at API layer

    If user create an image with Ceph backend driver, and then create
    an instance based on the image. As a result, user will run into
    500 error when deleting the image. Because rbd driver is raising
    exception.InUseByStore()at [1] when the image is in use, but no
    code to catch the exception at REST API layer.

    [1] https://github.com/openstack/glance/blob/master/glance/store/rbd.py#L290

    Closes-Bug: 1345942

    Change-Id: I350c235944aab226dc96de169be2087e2b599ab4