Re: [patch]: dvd-2.2.15-7

From: Adam Heath (adam@doogie.org)
Date: Sun Feb 13 2000 - 16:26:56 EST


On Sun, 13 Feb 2000, Jens Axboe wrote:

> Hi,
>
> I've updated the 2.2 series patch to pre-2.2.15-7.
>
> Changes:
>
> - Fix sense reporting + handling.
> - A few extra sense code, one redundant.
> - Fix IDE expiry clearing handler too soon.
> - Fix possible bug in sense analyzing
> - Remove ide-cd write status flag
> - Return sense to user space for cgc command regardless of command
> result (user app can extract progress information by issuing
> test unit commands and examining sense data).
> - Remove redundant locking (and make sure to relock after a reset).
> - Some drives failed READ_DISC_INFO, get length and issue command
> twice. Similar to READ_TRACK_INFO work-around.
> - Pack fixed_packet_size, it is not properly aligned in struct.
> - Support CDROM_SEND_PACKET on sparc64.
>
> Some of this should go into 2.2.X, as some of the bugs exists in
> the stock kernel as well, but let's wait for 2.2.16-pre first.
>
> Patch available at

I haven't yet compiled this patch, but will soon.

I have the following DVD-RAM device:

Host: scsi0 Channel: 00 Id: 04 Lun: 00
  Vendor: CREATIVE Model: DVD-RAM RAM1216S Rev: 1311
  Type: Optical Device ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 04 Lun: 00
  Vendor: CREATIVE Model: DVD-RAM RAM1216S Rev: 1311
  Type: CD-ROM ANSI SCSI revision: 02

As you can see, it is detected twice, as it should be. However, whenever I
try to write to the device(even using mkfs.ext2 -b 2048), it puts the scsi bus
into some unknown state(read, unusable), my other drives become
inaccesible. Fortunately, I have reiser on them, so it doesn't take long to
reboot(I have to hit the reset button, as it can't unmount a non-responding
drive).

Have you seen or heard of any problems like this? Note, the dvd-ram drive can
read cds and dvds fine. Just can't write to them.

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