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Diffstat (limited to 'Managing Ceph on Devstack & OpenStack.md')
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diff --git a/Managing Ceph on Devstack & OpenStack.md b/Managing Ceph on Devstack & OpenStack.md new file mode 100644 index 0000000..6ccb1c5 --- /dev/null +++ b/Managing Ceph on Devstack & OpenStack.md @@ -0,0 +1,52 @@ +--- +tags: + - ceph + - devstack + - openstack +--- +[[Installing Ceph on devstack]] + +The pool names are: +- volumes for cinder volumes +- images for glance images +- vms for nova "local storage" rbd volumes +- backups for cinder volume backups + +https://docs.ceph.com/en/reef/rbd/rados-rbd-cmds/ + +``` +ubuntu@gobs-devstack:~$ sudo rbd ls volumes +volume-5b6cc251-8f3e-4572-a8b9-52efa390ebc3 +volume-6f5e81dd-40f3-42f9-aad3-afcf5696387c +volume-ac39d5be-9606-4711-948e-e76c035e2a25 +``` + +Specify the pool in the `info` command: +``` +ubuntu@gobs-devstack:~$ sudo rbd info volumes/volume-6f5e81dd-40f3-42f9-aad3-afcf5696387c +rbd image 'volume-6f5e81dd-40f3-42f9-aad3-afcf5696387c': + size 10 GiB in 2560 objects + order 22 (4 MiB objects) + snapshot_count: 0 + id: 17d385edc7a94 + block_name_prefix: rbd_data.17d385edc7a94 + format: 2 + features: layering, exclusive-lock, object-map, fast-diff + op_features: + flags: + create_timestamp: Mon Mar 31 12:56:46 2025 + access_timestamp: Mon Mar 31 12:56:46 2025 + modify_timestamp: Mon Mar 31 12:56:46 2025 + parent: volumes/volume-5b6cc251-8f3e-4572-a8b9-52efa390ebc3@snapshot-3d1f148a-5fe4-4df2-87c3-4272565b82c2 + overlap: 10 GiB +``` + +using `rbd du` we can get some actual usage stats: +``` +ubuntu@gobs-devstack:~$ sudo rbd du volumes/volume-d66216fc-0b4a-4480-be0e-5530fb8e6004 +NAME PROVISIONED USED +volume-d66216fc-0b4a-4480-be0e-5530fb8e6004@volume-e65e7bcf-88a8-4afb-ba5c-0dbb27f402d9.clone_snap 1 GiB 44 MiB +volume-d66216fc-0b4a-4480-be0e-5530fb8e6004@snapshot-05b07e40-8cbc-4f2d-896c-bbfc0cd2c801 10 GiB 52 MiB +volume-d66216fc-0b4a-4480-be0e-5530fb8e6004 10 GiB 10 GiB +<TOTAL> 10 GiB 10 GiB +```
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