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[root@controller ~(keystone_admin)]# glance image-create --name "Test5" --disk-format qcow2 --container-format bare --visibility public --file cirros-0.3.4-x86_64-disk.qcow2
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+------------------+--------------------------------------+
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| Property | Value |
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+------------------+--------------------------------------+
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| checksum | 56730d3091a764d5f8b38feeef0bfcef |
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| container_format | bare |
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| created_at | 2017-09-19T13:48:01Z |
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| disk_format | qcow2 |
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| id | ab96b1ad-1c87-4900-a5aa-9b63ac3e7284 |
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| min_disk | 0 |
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| min_ram | 0 |
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| name | Test5 |
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| owner | df503b76d47b4bc1bbbcf14e8a68c5a8 |
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| protected | False |
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| size | 41126400 |
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| status | active |
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| tags | [] |
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| updated_at | 2017-09-19T13:48:07Z |
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| virtual_size | None |
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| visibility | public |
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+------------------+--------------------------------------+
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===================================================================================================
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[root@ceph-server ~]# rbd ls images -l
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NAME SIZE PARENT FMT PROT LOCK
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ab96b1ad-1c87-4900-a5aa-9b63ac3e7284 40162k 2
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ab96b1ad-1c87-4900-a5aa-9b63ac3e7284@snap 40162k 2 yes
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[root@ceph-server ~]# rbd resize --size 20 --allow-shrink images/ab96b1ad-1c87-4900-a5aa-9b63ac3e7284
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Resizing image: 100% complete...done.
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[root@ceph-server ~]# rbd ls images -l
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NAME SIZE PARENT FMT PROT LOCK
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ab96b1ad-1c87-4900-a5aa-9b63ac3e7284 20480k 2
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ab96b1ad-1c87-4900-a5aa-9b63ac3e7284@snap 40162k 2 yes
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[root@ceph-server ~]# rbd snap create images/ab96b1ad-1c87-4900-a5aa-9b63ac3e7284@snap1
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[root@ceph-server ~]# rbd snap remove images/ab96b1ad-1c87-4900-a5aa-9b63ac3e7284@snap1
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[root@ceph-server ~]# rbd snap remove images/ab96b1ad-1c87-4900-a5aa-9b63ac3e7284@snap
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rbd: snapshot 'snap' is protected from removal.
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2017-09-19 19:21:03.011080 7fcb6d154d80 -1 librbd::Operations: snapshot is protected
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[root@ceph-server ~]# rbd snap unprotect images/ab96b1ad-1c87-4900-a5aa-9b63ac3e7284@snap
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[root@ceph-server ~]# rbd snap remove images/ab96b1ad-1c87-4900-a5aa-9b63ac3e7284@snap
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[root@ceph-server ~]# rbd snap create images/ab96b1ad-1c87-4900-a5aa-9b63ac3e7284@snap
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[root@ceph-server ~]# rbd ls images -l
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NAME SIZE PARENT FMT PROT LOCK
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ab96b1ad-1c87-4900-a5aa-9b63ac3e7284 20480k 2
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ab96b1ad-1c87-4900-a5aa-9b63ac3e7284@snap 20480k 2
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[root@ceph-server ~]#
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=================================================================================
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[root@controller ~(keystone_admin)]# glance image-download ab96b1ad-1c87-4900-a5aa-9b63ac3e7284 --file /root/debashis7 <================ CLI is hanged during download
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^C... terminating glance client
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