Samba: names displayed as uppercase 8.3 random characters

[peter_b]

[PROBLEM]
I was accessing files over a Samba share (Debian 8 (Jessie) as server), when some filenames were not the way they were when watching them on the server (using "ls"), but random uppercase letters in legacy "MS-DOS 8.3 notation".

For example:
"01 - author : title.txt" becomes "0HPENP~T.TXT"

Very confusing.

[SOLUTION]
The reason was that the filenames contained characters that unixoid filesystems (ext, zfs, etc) can handle, but Windows can't.
Therefore, Samba "cleaned" these filenames - but not in a very sensible way

That's a reason why I am very very picky about clean filenames!

Here's something that you can use to clean your filenames before trouble happens:
http://detox.sourceforge.net/


Links:

• Naming Files, Paths, and Namespaces (MSDN.Microsoft.com)
• What characters are forbidden in Windows and Linux directory names?

[peter_b]

It also seems to affect folders that "end with a dot" in the name.

For example, the folder "x.x" works fine, but "x.x." is translated to "XGI9XM~D"
Didn't expect this to be problem at all.

[gilthanaz]

WTF I've never seen this happen in a decade of using samba O.o