hotplug

hotplug

[raja sekhar kottapalli]

what are the required rpm's for creating a dynamic
icon on the desktop when an usb is pluged in


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Hotplug

[Philip MacIver]

I've just read something that may be causing my
problem with udev, and I would just like to confirm
this before I actually go ahead and do any changes. 

Running "/proc/sys/kernel/hotplug" on my system prints
out "/bin/true", I've read that to change this you do
echo "/sbin/hotplug" > /proc/sys/kernel/hotplug. 

But what I want to know is, is this the reason that my
linux system won't boot up when I try and use udev
with /dev as the udev_root. The reason that I ask is
because when I tested out udev using /udev as the
udev_root and my system started up, the hotplug demon
started up after the hard disks are mounted. And the
problem was that the /dev/hda device nodes (and
others) were not being created. 

Thanks in advanced for any help. 

==Philip MacIver
--
e: pmaciver@arishi.com
e: philipmaciver@yahoo.co.uk


	
	
		
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Re: Hotplug

[MALET JL]

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Philip MacIver a écrit :

>I've just read something that may be causing my
>problem with udev, and I would just like to confirm
>this before I actually go ahead and do any changes. 
>
>Running "/proc/sys/kernel/hotplug" on my system prints
>out "/bin/true", I've read that to change this you do
>echo "/sbin/hotplug" > /proc/sys/kernel/hotplug. 
>
>But what I want to know is, is this the reason that my
>linux system won't boot up when I try and use udev
>with /dev as the udev_root. The reason that I ask is
>because when I tested out udev using /udev as the
>udev_root and my system started up, the hotplug demon
>started up after the hard disks are mounted. And the
>problem was that the /dev/hda device nodes (and
>others) were not being created. 
>
>Thanks in advanced for any help. 
>
>=====
>Philip MacIver
>--
>e: pmaciver@arishi.com
>e: philipmaciver@yahoo.co.uk
>  
>
what script do you use to start udev?  is this the start_udev one?
when you use /udev : the entries are created? (do an ls don't assume 
that they are created because no errors occurs)
are you mounting a /dev in fstab? (i know someone that did that...)

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Re: Hotplug

[Philip MacIver]

 --- MALET JL <malet.jean-luc@laposte.net> wrote: >
Philip MacIver a écrit :
> 
> >I've just read something that may be causing my
> >problem with udev, and I would just like to confirm
> >this before I actually go ahead and do any changes.
> 
> >
> >Running "/proc/sys/kernel/hotplug" on my system
> prints
> >out "/bin/true", I've read that to change this you
> do
> >echo "/sbin/hotplug" > /proc/sys/kernel/hotplug. 
> >
> >But what I want to know is, is this the reason that
> my
> >linux system won't boot up when I try and use udev
> >with /dev as the udev_root. The reason that I ask
> is
> >because when I tested out udev using /udev as the
> >udev_root and my system started up, the hotplug
> demon
> >started up after the hard disks are mounted. And
> the
> >problem was that the /dev/hda device nodes (and
> >others) were not being created. 
> >
> >Thanks in advanced for any help. 
> >
> >==> >Philip MacIver
> >--
> >e: pmaciver@arishi.com
> >e: philipmaciver@yahoo.co.uk
> >  
> >
> what script do you use to start udev?  is this the
> start_udev one?

Yes.

> when you use /udev : the entries are created? (do an
> ls don't assume 
> that they are created because no errors occurs)

Yes all the enteries are created, I've learnt never to
assume
> are you mounting a /dev in fstab? (i know someone
> that did that...)
> 

Nope I've checked my fstab many times and I don't
mount a dev.

When I do set the udev_root to /dev some devices get
created, like fd0 and a few others that I can't
remember. 

But i'm wondering if where i'm starting udev in my
rc.sysinit is the problem. Just for your reference I
start it (and also mount sysfs) right after /proc gets
mounted (and yes I do mmount sysfs before I run
start_udev :) )


 

==Philip MacIver
--
e: pmaciver@arishi.com
e: philipmaciver@yahoo.co.uk


	
	
		
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Re: Hotplug

[MALET JL]

[-- Attachment #1: Type: text/plain, Size: 2891 bytes --]

Philip MacIver a écrit :

> --- MALET JL <malet.jean-luc@laposte.net> wrote: >
>Philip MacIver a écrit :
>  
>
>>>I've just read something that may be causing my
>>>problem with udev, and I would just like to confirm
>>>this before I actually go ahead and do any changes.
>>>      
>>>
>>>Running "/proc/sys/kernel/hotplug" on my system
>>>      
>>>
>>prints
>>    
>>
>>>out "/bin/true", I've read that to change this you
>>>      
>>>
>>do
>>    
>>
>>>echo "/sbin/hotplug" > /proc/sys/kernel/hotplug. 
>>>
>>>But what I want to know is, is this the reason that
>>>      
>>>
>>my
>>    
>>
>>>linux system won't boot up when I try and use udev
>>>with /dev as the udev_root. The reason that I ask
>>>      
>>>
>>is
>>    
>>
>>>because when I tested out udev using /udev as the
>>>udev_root and my system started up, the hotplug
>>>      
>>>
>>demon
>>    
>>
>>>started up after the hard disks are mounted. And
>>>      
>>>
>>the
>>    
>>
>>>problem was that the /dev/hda device nodes (and
>>>others) were not being created. 
>>>
>>>Thanks in advanced for any help. 
>>>
>>>=====
>>>Philip MacIver
>>>--
>>>e: pmaciver@arishi.com
>>>e: philipmaciver@yahoo.co.uk
>>> 
>>>
>>>      
>>>
>>what script do you use to start udev?  is this the
>>start_udev one?
>>    
>>
>
>Yes.
>
>  
>
>>when you use /udev : the entries are created? (do an
>>ls don't assume 
>>that they are created because no errors occurs)
>>    
>>
>
>Yes all the enteries are created, I've learnt never to
>assume
>  
>
>>are you mounting a /dev in fstab? (i know someone
>>that did that...)
>>
>>    
>>
>
>Nope I've checked my fstab many times and I don't
>mount a dev.
>
>When I do set the udev_root to /dev some devices get
>created, like fd0 and a few others that I can't
>remember. 
>
>But i'm wondering if where i'm starting udev in my
>rc.sysinit is the problem. Just for your reference I
>start it (and also mount sysfs) right after /proc gets
>mounted (and yes I do mmount sysfs before I run
>start_udev :) )
>
>
> 
>
>=====
>Philip MacIver
>--
>e: pmaciver@arishi.com
>e: philipmaciver@yahoo.co.uk
>
>
>	
>	
>		
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>  
>
I remember having such trouble but this was because the udev script was 
run twice...... but I can't remember exactly what was the causes and how 
they disapeard.....

what I remember is that : I loged into the box, noticed that /dev wasn't 
the right one (a fixed dev tree) so tried to rerun the script and only 
get a partial /dev structure.... looking what was mounted told me that 
/dev was mounted twice with ramfs..... maybe it can help :/

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Re: Hotplug

[Philip MacIver]

 --- MALET JL <malet.jean-luc@laposte.net> wrote: > 
> I remember having such trouble but this was because
> the udev script was 
> run twice...... but I can't remember exactly what
> was the causes and how 
> they disapeard.....
> 
> what I remember is that : I loged into the box,
> noticed that /dev wasn't 
> the right one (a fixed dev tree) so tried to rerun
> the script and only 
> get a partial /dev structure.... looking what was
> mounted told me that 
> /dev was mounted twice with ramfs..... maybe it can
> help :/
> 

Thanks, I have to explore this possibility more when I
get home (they make me use Wind**s at work) :)
 

==Philip MacIver
--
e: pmaciver@arishi.com
e: philipmaciver@yahoo.co.uk


	
	
		
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