https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192050
Bug ID: 192050
Summary: [zfs] The allowed character set for ZFS dataset names
is very limited
Product: Base System
Version: 10.0-RELEASE
Hardware: Any
OS: Any
Status: Needs Triage
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: aberg...@my.hennepintech.edu
While there are very few limitations on directory names, ZFS dataset names seem
to support only alphanumeric characters and the space character. This is
extremely annoying when trying to create the occasional dataset where the
intended directory name has a punctuation mark such as an exclamation point. It
also does not seem to support non-ASCII characters either. With the exception
of @, I cannot see why a ZFS dataset name cannot support any character that is
allowed in a directory name.
With this limitation, there are two workarounds: limit directory names to the
character set allowed in dataset names, or create different dataset names and
explicitly set the mountpoint to have the correct name of the directory. The
former is kind of absurd, but more or less manageable, depending on how badly
you want/need the directory name to be correct. The latter creates the need for
more complicated scripts and workflows, and extra permissions are needed for
creating and mounting datasets with explicitly set mountpoints.
# zfs create storage/文字化け
cannot create 'storage/文字化け': invalid character ' in name
# zfs create storage/touché
cannot create 'storage/touché': invalid character ' in name
# zfs create "storage/Here Today, Gone Tomorrow"
cannot create 'storage/Here Today, Gone Tomorrow': invalid character ',' in
name
# zfs create "storage/Why?"
cannot create 'storage/Why?': invalid character '?' in name
I am quite curious why such a limitation exists. I would also like to know if
this is a limitation of ZFS as a whole or just zfs(8) in particular.
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