RE: writeups for hotplugging S/390 chandev, PNP docking stations

["Post, Mark K" <mark.post@eds.com>]

Rick, Dave,

I read the chandev.8 file, and while it's pretty poorly formatted, the
information seems relatively good, if presented in a scattered manner.  As
you commented, the developers are probably concentrating on code for the
most part.

I normally use the "Device Drivers and Installation Commands" document when
I want to refresh my memory on a particular command for a particular type of
device.
(http://www10.software.ibm.com/developerworks/opensource/linux390/docu/l390d
d07.pdf)  This seems pretty clear and reasonably well-written.  If Dave
finds this more acceptable, then I guess we're done.  Otherwise, I would
have to think about who might be willing to translate the chandev.8 file
into something more coherent.

Mark

-----Original Message-----
From: Rick Troth [mailto:rtroth@bmc.com]
Sent: Tuesday, April 02, 2002 10:30 AM
To: David Brownell
Cc: linux-hotplug-devel@lists.sourceforge.net; mark.post@eds.com
Subject: Re: writeups for hotplugging S/390 chandev, PNP docking
stations?


I've sent to Mark Post,  one of the info reference people 
in the S/390 (aka: zSeries) community.   Mark should be able to 
recommend someone who can clear-up the description.   This "chandev.8" 
probably came out of the lab that produces most of the S/390 patches. 
Their focus is on code,  I'm sure,  not doc.   But someone who 
understands the princ. of ops can probably make it plain. 
 
> Also, let us know if there are hotplug scripts that
> should be incorporated into the standard toolset.
> 
> I'd suspect they'd be more generally useful for the
> laptop docking stations than for the mainframes,
> but I could easily get surprised!  :)
 
Surprise!   The mainframe plugs and un-plugs all the time. 
Devices get  "varied online"  (or offline)  on demand. 
The situation only gets worse when you're running Linux in a 
virtual machine where one could  'hcp attach'  (or detach) 
things on-the-fly,  both virtual and real.   It's fun! 
 
Let's just say that the mainframe Linux crowd 
has been waiting for hotplug for a long time.   :-) 
Rebooting just to recognize a dynamic device is ... sub-optimal.   :-( 
 


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