ZFSPool
Filesystem Naming Restrictions
ZFS has some built-in naming restrictions for pool names and filesystem names. Regular ZFS files and directories, however, don’t have these restrictions. Each ZFS filesystem and pool name must be named according to the following rules:
- Each component can only contain alphanumeric characters in addition to the following four special characters: Underscore ‘_’, Hyphen ‘-’, Colon ‘:’ and Period ‘.’
- Pool names must begin with a letter, except for the following restrictions:
The beginning sequence c[0-9] is not allowed.
The names “log” and “spare” are reserved.
A name that begins with “mirror” or “raidz” is also not allowed because these names are reserved. You can use a case-variant as a work-around.
Pool names must not contain a percent sign (%).
- Filesystem names must begin with an alphanumeric character and must not contain a percent sign (%).