Date: Fri, 20 Feb 2004 23:14:04 +0100 From: Michael Nottebrock <michaelnottebrock@gmx.net> To: freebsd-current@freebsd.org Cc: freebsd-stable@freebsd.org Subject: Re: Filesystem support on DVD-RAMs Message-ID: <200402202314.08563.michaelnottebrock@gmx.net> In-Reply-To: <200402191908.42575.michaelnottebrock@gmx.net> References: <200402191908.42575.michaelnottebrock@gmx.net>
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On Thursday 19 February 2004 19:08, Michael Nottebrock wrote:
> I've cc'd -current because I'd
> like to know if the situation is any different in -CURRENT / 5.2 and
> because someone might want to append the table with results for UDF 1.5 a=
nd
> UDF 2.0, which I didn't bother to test because UDF support still isn't
> MFC'd.
Okay, so I've done it myself already, with the help of a 5.2-Release-p1=20
=46reeSBIE from GUFI. The Linux used is still the Knoppix 3.2 from the prev=
ious=20
tests, with udftools 1.0.0b2 compiled from source.
The numbers in the table indicate the UDF version.
| Linux | FreeBSD | Windows | Windows |
| (2.4.20) | 5.2R-p1 | 2000 SP4 (*) | 98 SE (*) |
=2D-----|---------------------------------------------------
UDF | 1.02,1.50 | NO | NO | NO |
Create| 2.01 | | | |
=2D-----|---------------------------------------------------
UDF | 1.02,1.50 | 1.01,1.50 | 1.01,1.50 | 1.01,1.50 |
Read | 2.01 | | | |
=2D-----|---------------------------------------------------
UDF | 1.02,1.50 | NO | NO | NO |
Write | 2.01 | | | |
=2D-----|---------------------------------------------------
(*) Windows support for UDF filesystems can be extended
by driver support from the drive manufacturer, but
the set of supported features will differ from manu-
facturer, i.e. LG's drivers might support different
things than Pioneer's or Plextor's. Below is a table
what Windows can do with the drivers supplied by LG
for the GSA-4081B drive:
| Windows | Windows |
| 2000 SP4 (*) | 98 SE (*) |
=2D-----|---------------------------
UDF | 1.50,2.01 | 1.50,2.01 |
Create| | |
=2D-----|---------------------------
UDF | 1.01,1.50, | 1.01,1.50,|
Read | 2.01 | 2.01 |
=2D-----|---------------------------
UDF | 1.01,1.50, | 1.01,1,50 |
Write | 2.01 | 2.01 |
=2D-----|---------------------------
Together with the first table I posted, it becomes pretty clear that FreeBS=
D=20
systems are de facto isolated with regard to data-exchange over DVD-media -=
=20
it's not possible to create filesystems on fresh media which can be read on=
=20
any non-BSD systems and the only filesystem besides UFS that's supported wi=
th=20
read and write access is FAT32, which does not meet the requirements to=20
properly represent filesystems with common unix-semantics.
=2D-=20
,_, | Michael Nottebrock | lofi@freebsd.org
(/^ ^\) | FreeBSD - The Power to Serve | http://www.freebsd.org
\u/ | K Desktop Environment on FreeBSD | http://freebsd.kde.org
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