ceph:tldr:eb1d9

The command "ceph pg dump --format ${plain}" is used in the context of the Ceph distributed storage system.

Here's a breakdown of the command and its components:

• "ceph" is the command-line utility for managing Ceph clusters.
• "pg" stands for Placement Group, which is a logical unit for distributing data across OSDs (Object Storage Daemons).
• "dump" is a subcommand that retrieves a detailed dump of the placement group's information.
• "--format" is an option that specifies the format in which the output should be presented.
• "${plain}" is a placeholder indicating the desired output format, which in this case is the "plain" format.

The purpose of this command is to display information about Ceph placement groups in plain format, without any additional formatting or styling. By using this command, you can obtain a comprehensive dump of placement group data that can be helpful for troubleshooting, monitoring, or analyzing the state of your Ceph cluster.