# Obtaining interface display details

The EVMS interfaces let you view more detailed information about an EVMS object than what is readily available from the main views of the EVMS user interfaces. The type and extent of additional information available is dependent on the interface you use. For example, the EVMS GUI provides more in-depth information than does the CLI.

The following sections show how to find detailed information on the region `lvm/Sample Container/Sample Region`, which is part of volume `/dev/evms/Sample Volume` (created in section 10.2).

## Using the EVMS GUI

With the EVMS GUI, it is only possible to display additional details on an object through the Context Sensitive Menus, as shown in the following steps:

1. Looking at the volumes view, click the "+" next to volume `/dev/evms/Sample Volume`. Alternatively, look at the regions view.

2. Right click `lvm/Sample Container/Sample Region`.

3. Point at Display Details... and click. A new window opens with additional information about the selected region.

4. Click More by the Logical Extents box. Another window opens that displays the mappings of logical extents to physical extents.

## Using Ncurses

Follow these steps to display additional details on an object with Ncurses:

1. Press Tab to reach the Storage Regions view.

2. Scroll down using the down arrow until `lvm/Sample Container/Sample Region` is highlighted.

3. Press Enter.

4. In the context menu, scroll down using the down arrow to highlight "Display Details..."

5. Press Enter to activate the menu item.

6. In the Detailed Information dialog, use the down arrow to highlight the "Logical Extents" item and then use spacebar to open another window that displays the mappings of logical extents to physical extents.

## Using the CLI

Use the `query` command (abbreviated `q`) with filters to display details about EVMS objects. There are two filters that are especially helpful for navigating within the command line: `list options` (abbreviated `lo`) and `extended info` (abbreviated `ei`).

The `list options` command tells you what can currently be done and what options you can specify. To use this command, first build a traditional query command starting with the command name `query`, followed by a colon (`:`), and then the type of object you want to query (for example, volumes, objects, plug-ins). Then, you can use filters to narrow the search to only the area you are interested in. For example, to determine the acceptable actions at the current time on `lvm/Sample Container/Sample Region`, enter the following command:

    query: regions, region="lvm/Sample Container/Sample Region", list options

The `extended info` filter is the equivalent of Display Details in the EVMS GUI and Ncurses interfaces. The command takes the following form: `query`, followed by a colon (`:`), the filter (`extended info`), a comma (`,`), and the object you want more information about. The command returns a list containing the field names, titles, descriptions and values for each field defined for the object. For example, to obtain details on `lvm/Sample Container/Sample Region`, enter the following command:

    query: extended info, "lvm/Sample Container/Sample Region"

Many of the field names that are returned by the `extended info` filter can be expanded further by specifying the field name or names at the end of the command, separated by commas. For example, if you wanted additional information about logical extents, the query would look like the following:

    query: extended info, "lvm/Sample Container/Sample Region", Extents