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Date:      Mon, 19 Apr 2010 16:58:48 +0300
From:      Andriy Gapon <avg@icyb.net.ua>
To:        Tim Kientzle <kientzle@freebsd.org>
Cc:        current@freebsd.org, fs@freebsd.org
Subject:   Re: ISO9660 4GB directory structures boundary limit and growisofs
Message-ID:  <4BCC6198.4020808@icyb.net.ua>
In-Reply-To: <4BC9E254.9070300__39016.1050054759$1271523997$gmane$org@freebsd.org>
References:  <p2l3a142e751004161607h5ea399e3p182f3c6b10fc9346@mail.gmail.com> <4BC9E254.9070300__39016.1050054759$1271523997$gmane$org@freebsd.org>

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on 17/04/2010 19:31 Tim Kientzle said the following:
> Paul B Mahol wrote:
>>
>> It is apparently not possible to make use of -use-the-force-luke=4gms
>> on FreeBSD when appending new session after 4GB. Mounted disk
>> afterwards  show nothing.
>>
>> Should we allow it like linux does?
> 
> Are you claiming there is a problem when FreeBSD reads such
> images or a problem with creating such images?  What
> programs are you using?
> 
> This sounds like a pretty unsurprising 32-bit truncation
> bug:  the filesystem structures in ISO9660 are all sector
> numbers so 8TB should be the natural limit (4G sectors
> times 2k bytes/sector).

I don't think that the problem is with limit on sector count here.
I think it's a limitation with size/offset in bytes somewhere in cd9660 fs driver.

-- 
Andriy Gapon



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