multi-path devices only created in /dev/mapper

multi-path devices only created in /dev/mapper

[Paul Cote]

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Hi

 

I just recently upgraded a RH server to update 5 and recently noticed
that multi-path devices are no longer being created in the /dev/mpath
... but just in /dev/mapper.

Has /dev/mpath been deprecated in update 5? ... or is there something
else going on? 

 

Thanks,

Paul


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Re: multi-path devices only created in /dev/mapper

[Benjamin Marzinski]

On Wed, Dec 12, 2007 at 02:37:43PM -0500, Paul Cote wrote:
> 
> 
>    Hi
> 
> 
> 
>    I just recently upgraded a RH server to update 5 and recently noticed that
>    multi-path devices are no longer being created in the /dev/mpath ... but
>    just in /dev/mapper.
> 
>    Has /dev/mpath been deprecated in update 5? ... or is there something else
>    going on?
> 

They should be created in /dev/mpath.  This is done by udev.  Is udev
otherwise working properly.  If you partition the underlying device, do
dm devices get created for the partitions by kpartx?

Also, since the /dev/mapper device nodes exist as soon as the
device is created, and the /dev/mpath symlinks don't get created until
udev gets around to it, you are usually better off simply using the
/dev/mapper names anyways.

-Ben

> 
> 
>    Thanks,
> 
>    Paul

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