[ltp] hotswaping UltraBay devices (R51)

[Michael Gaber]

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Laurent Gilson wrote:
> Hello
> 
> I want to change my CD/DVD-ROM w/o rebooting. (R51 with Combo-drive)
> 
> "echo eject > /proc/acpi/ibm/bay" turns off the bay, but does not 
> unregister the IDE-device (i think this is a BIG problem, as the device 
> is not tristated before turning off the power. I don't want to fry the 
> drive or bay...).
> 
> hdparm -U /dev/hdc gives me the hdparm-help-text. hdparm does not react 
> at all to -U ... ??
> 
> -x 0 fails with "HDIO_TRISTATE_HWIF failed: Invalid argument".
> 
> 
> So ... how to do it right ?
> 
> Thanks,
> Gilson Laurent
> --The linux-thinkpad mailing list home page is at:
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> 
> 

try this:

#eject:
/sbin/idectl-ibm-acpi 1 off
echo eject > /proc/acpi/ibm/bay
#insert:
/usr/bin/sleep 2 
/sbin/idectl-ibm-acpi 1 on
/sbin/idectl-ibm-acpi 1 rescan


straight copied from my acpi-script reacting to the acpi-events thrown 
by pulling out / thrusting in the handle

but remember: after swapping your device will run without dma, i haven't 
found a way to turn it back on, since hdparm won't let me.

(idectl-ibm-acpi is the idectl file from the ibm-acpi package)

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