ide hotplug

ide hotplug

[Paul Ionescu]

Is it possible with the new linux kernel 2.6 to hotplug an ide device
like cdrom/hdd and the kernel to automaticaly recognize it?

I have a IBM thinkpad T40 which has a removable bay for ide devices like
IDE cdrom/hdd/dvd. (and other stuff too like secondary battery a.s.o)
In older kernels like 2.4.x I used hdparm with -U -R options to register
and unregister IDE devices, but it is not working any more on new 2.6.x
kernels.

Also on my desktop I have a hot-pluggable IDE tray/cage where I can
hot-swap HDD, CDROM, DVD, which also is not automaticaly detected.

Where should I search for this feature ?




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Re: ide hotplug

[Paul Ionescu]

Hi Greg,

Ok, let's say that we don't talk about my special case with T40.
Let's say that I don't even want hotplug event, but at least a mecanism
to tell to the kernel that it should rescan the IDE devices, or IDE bus
?
But I guess this is a question for another mailing list (like
linux-kernel) not for linux-hotplug.
In the past I've used hdparm -U / -R, but it does not work anymore for
kernel 2.6.x.

Thanks,
Paul

On Tue, 2004-01-13 at 02:57, Greg KH wrote:
> On Sat, Jan 10, 2004 at 05:23:20PM +0200, Paul Ionescu wrote:
> > Is it possible with the new linux kernel 2.6 to hotplug an ide device
> > like cdrom/hdd and the kernel to automaticaly recognize it?
> 
> Depends on the hardware.
> 
> > I have a IBM thinkpad T40 which has a removable bay for ide devices like
> > IDE cdrom/hdd/dvd. (and other stuff too like secondary battery a.s.o)
> > In older kernels like 2.4.x I used hdparm with -U -R options to register
> > and unregister IDE devices, but it is not working any more on new 2.6.x
> > kernels.
> 
> Yeah, the kernel developers need some information on your hardware that
> IBM isn't giving out :(
> 
> So sorry, I don't think it will work.
> 
> greg k-h
> 
> 
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> 



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Re: ide hotplug

[Greg KH]

On Sat, Jan 10, 2004 at 05:23:20PM +0200, Paul Ionescu wrote:
> Is it possible with the new linux kernel 2.6 to hotplug an ide device
> like cdrom/hdd and the kernel to automaticaly recognize it?

Depends on the hardware.

> I have a IBM thinkpad T40 which has a removable bay for ide devices like
> IDE cdrom/hdd/dvd. (and other stuff too like secondary battery a.s.o)
> In older kernels like 2.4.x I used hdparm with -U -R options to register
> and unregister IDE devices, but it is not working any more on new 2.6.x
> kernels.

Yeah, the kernel developers need some information on your hardware that
IBM isn't giving out :(

So sorry, I don't think it will work.

greg k-h


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Re: ide hotplug

[Greg KH]

On Tue, Jan 13, 2004 at 01:11:43AM +0200, Paul Ionescu wrote:
> But I guess this is a question for another mailing list (like
> linux-kernel) not for linux-hotplug.

I would suggest searching the linux-kernel archives before asking this
question on there again...

Good luck,

greg k-h


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