What happens when I plug out the fibre cable

What happens when I plug out the fibre cable

[Jayjitkumar Lobhe]

Hi All,

I am a newbie to this hotplug concept. I have following query.

1. Suppose I have following scsi devices in my system
   /dev/sdd, /dev/sde, /dev/sdf, /dev/sdg

2. Now plug out the fiblre cable to from host side curresponding to
/dev/sdd, /dev/sdf.

What will be the operations carried out by hotplug system. I need the
information on the driver structure & kernel structure level.
e.g. what happend to device structure of the devices, what is the effect
on gendisk structure etc.

Hoping for your cooperation. Thanks in advance.

Regards,
Jayjit

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Re: What happens when I plug out the fibre cable

[Greg KH]

On Thu, Aug 24, 2006 at 11:00:06PM -0400, Jayjitkumar Lobhe wrote:
> Hi All,
> 
> I am a newbie to this hotplug concept. I have following query.
> 
> 1. Suppose I have following scsi devices in my system
>    /dev/sdd, /dev/sde, /dev/sdf, /dev/sdg
> 
> 2. Now plug out the fiblre cable to from host side curresponding to
> /dev/sdd, /dev/sdf.
> 
> What will be the operations carried out by hotplug system.

Nothing, there is no "hotplug system" anymore :)

Now if you are talking about udev, it will only delete the /dev links
for the devices that you removed.

> I need the information on the driver structure & kernel structure
> level.
> e.g. what happend to device structure of the devices, what is the effect
> on gendisk structure etc.

What do you need it for?  That is a huge question to answer.

It also is  a kernel question that you should ask on a kernel mailing
list.  But please, ask specific questions and do not expect others to do
your research for you.

thanks,

greg k-h

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