ZFS Naming restrictions.

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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 (%).

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