Describe the issue: Changes to the Discarding persistent write log cache command in PWL section under 2.20 in RBD guide.

There is a change to the command line syntax. We need to update the doc acordingly


https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/5/html-single/block_device_guide/index#discarding-persistent-write-log-cache_block

Describe the task you were trying to accomplish: Changed to the discarding command

Suggestions for improvement:

Please replace the below with
Documented -
Syntax

rbd image-cache invalidate POOL_NAME/IMAGE_NAME
Example

[ceph: root@host01 /]# rbd image-cache invalidate pool1/image1


Need to replace with new cmd syntax:
Syntax

rbd persistent-cache invalidate POOL_NAME/IMAGE_NAME

ex: rbd persistent-cache invalidate test/image1

Document URL:

https://access.redhat.com/documentation/en-us/red_hat_ceph_storage/5/html-single/block_device_guide/index#discarding-persistent-write-log-cache_block


Chapter/Section Number and Title: 2.20 section

Product Version:[root@plena007 ubuntu]# ceph version
ceph version 16.2.8-63.el8cp (233bc2dd7f0b8aa7ec907d66184579e328bb2d6c) pacific (stable)
[root@plena007 ubuntu]# 

Environment Details:

Any other versions of this document that also needs this update:

Additional information: