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Editor to share with you what ceph-rbd commands are commonly used, I hope you will gain something after reading this article, let's discuss it together!

1. List the images under the pool

# rbd ls [- l]

The-l parameter, like ls-l, lists more detailed information, including the size of the mirror, snapshots, etc.

two。 Create a mirror image

# rbd create-image-format 2

-s # the size of the image is usually 2 in MB,-image-format, otherwise the image cannot be cloned

3. Delete a mirror image

# rbd rm

If a mirror has a snapshot, there will be an error when deleting it. You need to delete the snapshot first.

4. Modify the image size

# rbd resize-s

5. Copy a mirror image

# rbd cp

6. Import a mirror

# rbd import-image-format 2

This command can be used to import a file saved on the local hard disk into ceph, such as the virtual hard disk that causes the virtual machine.

7. Export a mirror image

# rbd export

This command can be used to export images saved in ceph to a local file

8. Clone hard disk

# rbd clone

9. Take a snapshot

# rbd snap create

For example, rbd snap create testpool/testimg@snap1 means to create a snapshot called snap1 for the testpool/testimg image.

10. Snapshot protection / de-protection

# rbd snap protect

Protect snapshots. Only snapshots under protection can be used to clone new mirrors.

# rbd snap unprotect

Only snapshots that are not protected can be deleted

11. Delete a snapshot

# rbd snap rm

twelve。 The state when a mirror is rolled back to a snapshot

# rbd snap rollback ``13. Delete all snapshots of a mirror ```# rbd snap purge ```14. List the snapshots of a mirror ```# rbd snap ls ```15. Format conversion ```# qemu-img convert-f vpc tedt.vhd-O raw rbd:/ disk1``16. Flatten the clone hard disk and re-copy ```# rbd flatten ``17. View rbd information ```# rbd info poolname/ rbdimg```18. Check the actual rbd occupancy size ```# rbd diff poolname/rbdimg | awk'{SUM + = $2} END {print SUM/1024/1024 "MB"} '````after reading this article, I believe you have a certain understanding of "what are the common ceph-rbd commands?" if you want to know more about it, welcome to follow the industry information channel, thank you for reading!

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