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Methods of using extended queries

You can use extended queries to match and perform operations on objects that have specified values.

You specify extended queries by enclosing them within curly brackets ({}). An extended query must be specified as the first argument after the command name, before any other parameters. For example, to set offline all volumes whose names include the string tmp, you run the command in the following example:

cluster1::> volume modify {-volume *tmp*} -state offline

Extended queries are generally useful only with modify and delete commands. They have no meaning in create or show commands.

The combination of queries and modify operations is a useful tool. However, it can potentially cause confusion and errors if implemented incorrectly. For example, using the system node image modify command to set a node's default software image automatically sets the other software image not to be the default. The command in the following example is effectively a null operation:

cluster1::> system node image modify {-isdefault true} -isdefault false

This command sets the current default image as the non-default image, then sets the new default image (the previous non-default image) to the non-default image, resulting in the original default settings being retained. To perform the operation correctly, you can use the command in the following example:

cluster1::> system node image modify {-iscurrent false} -isdefault true