Re: some ide-scsi commands starve drives on the same cable

Martin Dalecki (dalecki@evision-ventures.com)
Mon, 18 Mar 2002 14:13:07 +0100


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.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/