zdb:tldr:02375

The command "zdb -b ${poolname}" is used to display detailed information about a ZFS storage pool in a Unix or Linux operating system.

Here's a breakdown of the command:

• "zdb" is the command-line utility for examining and debugging ZFS data structures.
• "-b" is an option used with the "zdb" command to specify that we want to view the properties and statistics of a specific pool.
• "${poolname}" is a placeholder that should be replaced with the actual name of the ZFS pool you want to examine. The dollar sign and curly braces indicate that this is a variable and its value will be substituted when the command is run.

By running this command with the appropriate pool name, you will get detailed information about the specified ZFS pool, including its configuration, metadata, and statistics. This can be useful for troubleshooting issues and monitoring the health of the pool.