ZFS Naming restrictions.

Each ZFS component must be named according to the following rules:

• Empty components are not allowed.

• Each component can only contain alphanumeric characters in addition to the following four special characters:

  • Underscore (_)

  • Hyphen (-)

  • Colon (:)

  • Period (.)

• Pool names must begin with a letter, except for the following restrictions:

  • The beginning sequence c[0-9] is not allowed

  • The name log is reserved

  • A name that begins with mirror, raidz, or spare is not allowed because these name are reserved.

  In addition, pool names must not contain a percent sign (%)

• Dataset names must begin with an alphanumeric character. Dataset names must not contain a percent sign (%).