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This article mainly shows you "what are the operations of block devices in ceph". The content is simple and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "what are the operations of block devices in ceph?"

one。 Create a block device

Qemu-img create-f rbd rbd: resource pool name / block device name file size

For example:

Qemu-img create-f rbd rbd:rbd/test 1G

Description: create a block device named test with a size of 1G under the resource pool rbd. You can view the information of this device using rbd info test.

two。 Map the block devices in the resource pool

Rbd map resource pool / block device name

For example:

Rbd map rbd/test

Map the test block devices under the resource pool rbd and view them through rbd showmapped, for example:

Id pool image snap device

1 rbd mydisk-/ dev/rbd1

2 rbd test-/ dev/rbd2

It means I have two block devices here, and the drive letter mapped by the test block is / dev/rbd2.

Formatting the mapped disk

Mkfs.ext4 / dev/rbd2

four。 Use this piece of equipment

Create a folder resource under the / mnt directory

Mount the disk to the resource directory

Mount / dev/rbd2 / mnt/resource

five。 Delete block device

Remove and mount

Umount / mnt/resource

Unmap rbd test-/ dev/rbd2 mapping relationship

Rbd unmap / dev/rbd2

Delete block device

Rbd rm test

The above is all the contents of the article "what are the operations of block devices in ceph". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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