linux-ext4 - [Bug 217145] Feature request: I need very long directory and file names

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Date:   Mon, 06 Mar 2023 18:38:47 +0000
From:   bugzilla-daemon@...nel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 217145] Feature request: I need very long directory and file
 names

https://bugzilla.kernel.org/show_bug.cgi?id=217145

Andreas Dilger (adilger.kernelbugzilla@...ger.ca) changed:

           What    |Removed                     |Added
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                 CC|                            |adilger.kernelbugzilla@...g
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--- Comment #4 from Andreas Dilger (adilger.kernelbugzilla@...ger.ca) ---
The problem with "long filename is a description of the video" is that 1-3KiB
today may grow to 4KiB or 16KiB in the future, so fixing the filename length to
allow 1KiB or 3KiB names (out of a full 4KiB PATH_MAX) is only a short term
solution.  Changing ext4 or XFS to support 3KiB or 4KiB *filenames* would be a
lot of effort for very marginal benefit. 

I think the right solution is to put the "full description" into a separate
xattr on the file (which can be up to 64KiB in modern ext4) and then restrict
filenames to 255 bytes. That allows very long descriptions without impacting
interoperability.

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