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Date: Mon, 18 Mar 2002 14:13:07 +0100
From: Martin Dalecki <dalecki@evision-ventures.com>
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To: Alan Cox <alan@lxorguk.ukuu.org.uk>
CC: =?ISO-8859-1?Q?ChristianBorntr=E4ger?= <christian@borntraeger.net>,
        linux-kernel@vger.kernel.org, andre@linux-ide.org
Subject: Re: some ide-scsi commands starve drives on the same cable
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Alan Cox wrote:
>>during some activities (e.g. erasing a CDRW or fixating a CDR on my 
>>CD-Burner) the hard disc on the same cable cannot be accessed.All data and 
>>swap partitions are inaccessable. There is no dmesg output, just entering the
>>mount point fails.
>>I am not sure if it is a kernel problem or if it is a firmware-bug.
> 
> 
> Neither. Its an IDE design limitation. IDE can't handle disconnects like
> real scsi does. The fixate command effectively locks the bus until it
> completes. 
> 
> There has been some movement forward in the standards on this. You might
> want to ask our new 2.5 IDE maintainer if/when it will be implemented - I
> suspect you have to wait a while though. There is much IDE to clean up first

Just for the record: I'm aware of it.

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