Date: Sat, 10 Jul 2004 21:17:46 GMT From: dino <boredhacker@yahoo.com> To: freebsd-gnats-submit@FreeBSD.org Subject: i386/68899: Problems reading and writing DVD-RAM discs Message-ID: <200407102117.i6ALHker019714@www.freebsd.org> Resent-Message-ID: <200407102120.i6ALKU5H002452@freefall.freebsd.org>
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>Number: 68899
>Category: i386
>Synopsis: Problems reading and writing DVD-RAM discs
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: freebsd-i386
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sat Jul 10 21:20:30 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator: dino
>Release: 5.2.1
>Organization:
Balston Research LLC
>Environment:
FreeBSD medea.digitalescorts.net 5.2.1-RELEASE FreeBSD 5.2.1-RELEASE #7: Sat Jul 10 12:41:34 EDT 2004 root@medea.digitalescorts.net:/usr/obj/usr/src/sys/MEDEA i386
>Description:
Let me start by stating that i have ATAPICAM compiled into the kernel. Now, I am able to 'mount_udf /dev/acd0 /mnt'. However, if the dvd-ram media is formated w/ UDF2 and I attempt to 'cat' or 'cp' a file ('ls' seems to work okay) the error message 'cannot allocate memory' is returned.
If the dvd-ram is formatted w/ UDF1.5 I am able to cat/cp MOST files. Unfortunately, trying to cp/cat certain files (maybe 'cause they are large?) results in the entire system crashing/rebooting automagically (ugh!). In addition, the disc gets corrupted (I tried copying a file from a directory on the DVD-RAM and after the crash/reboot I was no longer able to even ls the directory that the file was contained in, some kind of 'input/output error').
>How-To-Repeat:
Well, you may or may not need specific hardware (MATSHITA DVD-RAM SW-9571 A111). Insert a dvd-ram disc that is formated UDF2, mount_udf it, then try 'cat file_on_dvd_ram'; the message displayed is 'cannot allocate memory'.
Also, insert a dvd-ram disc that is formatted UDF1.5, mount_udf it, then try 'cp large_file_on_dvd_ram some_dir_on_hd' with various large files; eventually the system should crash and reboot, your dvd-ram will be corrupted.
>Fix:
dunno
>Release-Note:
>Audit-Trail:
>Unformatted:
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