Messages in this thread | | | From | "Jeremy Jackson" <> | Subject | Re: IDE and hot-swap disk caddies | Date | Mon, 25 Mar 2002 21:28:21 -0800 |
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At the interface level, there is some support. Look at hdparm's -b option to tristate the bus. But that's the whole bus. If the controller implements master/slave on one cable, you're hosed, electrically. It's the whole interface. 95% of controlers are like this.
Intel's PIIX can do master/slave on separate ports, but then you loose one bus. Laptops with bays also do things like this, but that's special hardware, hard to get programming specs for.
I think if you add the drive *after* boot, it doesn't have the benefit of the BIOS setting up PIO/UDMA modes, so I would try the hdparm -X speed settings also.
Jeremy
----- Original Message ----- From: "John Summerfield" <summer@os2.ami.com.au> Sent: Monday, March 25, 2002 3:16 PM Subject: Re: IDE and hot-swap disk caddies > > > The device is hot-swap capable and has a switch (others have a key) > > > that locks the drive in and powers it up; in the other position the > > > drive is powered down and can be removed. > > > > Linux doesn't support IDE hot swap at the drive level. Its basically > > waiting people to want it enough to either fund it or go write the code > > > > What needs to be done? How extensive is the surgery needed?
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