openstack 重建虚机报错，rebuild errror

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2021-06-08 04:09:14.744 29 DEBUG nova.api.openstack.wsgi [req-92b44224-2a14-4708-8877-d3f0892e00f5 46aefa5d65b84c3f9196296e4f4fb25c 4e75af83152940359dd0c9a56e1ea614 - default default] Returning 400 to user: Image 1d2cfcd0-b06e-4908-a886-c091a2a6b233 is unacceptable: Unable to rebuild with a different image for a volume-backed server. __call__ /usr/lib/python2.7/site-packages/nova/api/openstack/wsgi.py:1064
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2021-06-08 04:09:14.742 29 DEBUG nova.compute.api [req-92b44224-2a14-4708-8877-d3f0892e00f5 46aefa5d65b84c3f9196296e4f4fb25c 4e75af83152940359dd0c9a56e1ea614 - default default] [instance: f4a70ead-639f-44f2-b0e5-fca4b8198e68] Requested to rebuild instance with a new image 1d2cfcd0-b06e-4908-a886-c091a2a6b233 for a volume-backed server with image 9acb8b4c-5696-4eae-a04d-9d185b8b222d in its root volume which is not supported. rebuild /usr/lib/python2.7/site-packages/nova/compute/api.py:3161
2021-06-08 04:09:14.743 29 INFO nova.api.openstack.wsgi [req-92b44224-2a14-4708-8877-d3f0892e00f5 46aefa5d65b84c3f9196296e4f4fb25c 4e75af83152940359dd0c9a56e1ea614 - default default] HTTP exception thrown: Image 1d2cfcd0-b06e-4908-a886-c091a2a6b233 is unacceptable: Unable to rebuild with a different image for a volume-backed server.
2 _7 W& J5 `* H/ {" G2021-06-08 04:09:14.744 29 DEBUG nova.api.openstack.wsgi [req-92b44224-2a14-4708-8877-d3f0892e00f5 46aefa5d65b84c3f9196296e4f4fb25c 4e75af83152940359dd0c9a56e1ea614 - default default] Returning 400 to user: Image 1d2cfcd0-b06e-4908-a886-c091a2a6b233 is unacceptable: Unable to rebuild with a different image for a volume-backed server. __call__ /usr/lib/python2.7/site-packages/nova/api/openstack/wsgi.py:1064
2021-06-08 04:09:14.746 29 INFO nova.osapi_compute.wsgi.server [req-92b44224-2a14-4708-8877-d3f0892e00f5 46aefa5d65b84c3f9196296e4f4fb25c 4e75af83152940359dd0c9a56e1ea614 - default default] 10.144.106.7,10.144.106.6 "POST /v2.1/4e75af83152940359dd0c9a56e1ea614/servers/f4a70ead-639f-44f2-b0e5-fca4b8198e68/action HTTP/1.1" status: 400 len: 571 time: 0.3544419
. A/ B$ }$ g" k( B6 Q, E- O8 p2021-06-08 04:09:15.102 28 DEBUG nova.osapi_compute.wsgi.server [req-b7f64780-eaab-408d-9a26-005f6c865eb1 - - - - -] (28) accepted ('10.144.106.6', 60118) server /usr/lib/python2.7/site-packages/eventlet/wsgi.py:883
2021-06-08 04:09:15.276 28 DEBUG nova.api.openstack.wsgi [req-a3e0e39e-cfe8-4c0d-9278-85f8f40d1303 46aefa5d65b84c3f9196296e4f4fb25c 4e75af83152940359dd0c9a56e1ea614 - default default] Calling method '<bound method VersionsController.show of <nova.api.openstack.compute.versionsV21.VersionsController object at 0x7fc9a782be90>>' _process_stack /usr/lib/python2.7/site-packages/nova/api/openstack/wsgi.py:607
2021-06-08 04:09:15.277 28 INFO nova.osapi_compute.wsgi.server [req-a3e0e39e-cfe8-4c0d-9278-85f8f40d1303 46aefa5d65b84c3f9196296e4f4fb25c 4e75af83152940359dd0c9a56e1ea614 - default default] 10.144.106.7,10.144.106.6 "GET /v2.1/ HTTP/1.1" status: 200 len: 763 time: 0.1732149
2021-06-08 04:09:17.483 29 DEBUG nova.osapi_compute.wsgi.server [req-ae6a49cf-cc80-4333-8cbd-4d0156e75a54 - - - - -] (29) accepted ('10.144.106.6', 60264) server /usr/lib/python2.7/site-packages/eventlet/wsgi.py:883


应该是ceph存储中images这个pool池没有给cinder的r权限：
给cinder的r权限：
- q' f1 e! |7 ]) [$ c8 E4 u8 Wceph auth caps client.cinder mon 'allow r' osd 'allow class-read object_prefix rbd_children,allow rwx pool=volumes,allow rwx pool=backups,allow rx pool=images'
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