Date: Thu, 19 Feb 2004 19:08:35 +0100 From: Michael Nottebrock <michaelnottebrock@gmx.net> To: freebsd-stable@freebsd.org Cc: freebsd-current@freebsd.org Subject: Filesystem support on DVD-RAMs Message-ID: <200402191908.42575.michaelnottebrock@gmx.net>
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I recently got an LG GSA-4081B multiwriter, which also supports DVD-RAM. I've
been quite enthusiastic about finally having a a really big sort-of-floppy
disk I can use without any packet-writing nonsense & such, so I spent a bit
of time rebooting and formatting and mounting to find out which filesystem
would be best suited for carrying around data on DVD-RAMs with me (see table
below).
Right now it would seem that ext2fs needs to fixed to be able to mount
filesystems from cd-devices, and newfs_msdos needs to be fixed to create
filesystems on cd-devices. Furthermore, we probably need some new disktab
entries for typical DVD-RAM media. I've done all this on a -STABLE machine,
since the burner is in a -STABLE machine. 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 and UDF 2.0,
which I didn't bother to test because UDF support still isn't MFC'd.
Some notes on the table: Read+Write NO in Linux and FreeBSD equals "no
mounting possibe". UFS means UFS1 (newfs from -STABLE was used).
| FreeBSD | Linux | Windows 2000 (with drive- | Win98 SE |
| 4.9-Stable | Knoppix-2.4.20 | vendor-supplied driver) | (plain) |
------------------------------------------------------------------------------
Fat 32 | | | | |
Create | NO | NO | YES | NO |
------------------------------------------------------------------------------
Fat 32 | | | | |
Read | YES | YES | YES | YES |
------------------------------------------------------------------------------
Fat 32 | | | | |
Write | YES | YES | YES | NO |
------------------------------------------------------------------------------
NTFS | | | | |
Create | NO | NO | YES | NO |
------------------------------------------------------------------------------
NTFS | | | | |
Read | NO | YES | YES | NO |
------------------------------------------------------------------------------
NTFS | | | | |
Write | NO | Untested | YES | NO |
------------------------------------------------------------------------------
EXT2 | | | | |
Create | YES | YES | NO | NO |
------------------------------------------------------------------------------
EXT2 | | | | |
Read | NO | YES | NO | NO |
------------------------------------------------------------------------------
EXT2 | | | | |
Write | NO | YES | NO | NO |
------------------------------------------------------------------------------
UFS | | | | |
Create | YES | NO | NO | NO |
------------------------------------------------------------------------------
UFS | | | | |
Read | YES | NO | NO | NO |
------------------------------------------------------------------------------
UFS | | | | |
Write | YES | NO | NO | NO |
------------------------------------------------------------------------------
--
,_, | 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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