linux-kernel - Re: How to fix CDROM/DVD eject mess?

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Message-ID: <54D0CFC8.40305@gmail.com>
Date:	Tue, 03 Feb 2015 08:40:24 -0500
From:	Austin S Hemmelgarn <ahferroin7@...il.com>
To:	Takashi Iwai <tiwai@...e.de>, Kay Sievers <kay@...y.org>
CC:	Jens Axboe <axboe@...nel.dk>, Oliver Neukum <oneukum@...e.de>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: How to fix CDROM/DVD eject mess?

On 2015-02-03 07:31, Takashi Iwai wrote:

>>> Then,
>>> udev unlocks the media and issues the SCSI eject ioctl unconditionally
>>> when DISK_EVENT_EJECT_REQUEST event is received.  Since SCSI ioctl
>>> doesn't take the open refcount into account, it results in the
>>> forcible eject.
>>
>> Which again is the expected behavior in the user's view.
>
> What if user doesn't want?  e.g. DVD/CD media is being burned?
>
FWIW, I have seen some drives where either the hardware or the drive 
firmware ignores the eject button while a write operation is in progress 
(ie, doesn't appear to even send the event, let alone eject the disk).



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