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Date:      Fri, 8 Sep 2017 10:32:17 -0700
From:      Conrad Meyer <cem@freebsd.org>
To:        David Wolfskill <david@catwhisker.org>, Julian Elischer <julian@freebsd.org>,  freebsd-current <freebsd-current@freebsd.org>, Rick Macklem <rmacklem@uoguelph.ca>
Subject:   Re: extending the maximum filename length
Message-ID:  <CAG6CVpUCVzOvqOHP=3jLOL8GEzHcqQG0O-SATMe4QLZD35FykQ@mail.gmail.com>
In-Reply-To: <20170908172125.GB1152@albert.catwhisker.org>
References:  <0154558d-b2ad-af97-3960-3e392678f709@freebsd.org> <20170908172125.GB1152@albert.catwhisker.org>

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On Fri, Sep 8, 2017 at 10:21 AM, David Wolfskill <david@catwhisker.org> wrote:
> On Sat, Sep 09, 2017 at 01:15:31AM +0800, Julian Elischer wrote:
>> Has anyone using freeBSD ever increased NAME_MAX (filename maximum
>> length) and have any experience with it?
>>
>> We ($JOB) would recompile the entire system so intra-system
>> compatibility would probably be ok, and we have our own filesystem
>> which would support it.
>>
>> But I wonder if anyone has tried it and hit unexpected problems.
>> ....
>
> Not *strictly* a "filename length" issue, but one thing I (think
> I) recall encountering a while back was an (88-character?) upper
> limit on the length of the full pathname of a mount point.
>
> So that could prove ... annoying (if I actually recall correctly,
> and the situation has not changed since).

Hi David,

I think mountpoint name length is largely an orthogonal issue.
Fortunately, the 88 character limit (MNAMELEN) was already addressed
recently (bumped to 1024) with the ino64 project.

Best,
Conrad



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