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Subject: RE: removable media revalidation - udev vs. devfs or static /dev
Date: Mon, 12 Jan 2004 17:09:35 +0800
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Thread-Topic: removable media revalidation - udev vs. devfs or static /dev
Thread-Index: AcPWYhFjgmNie2tFQuGkoWRjzBNGOACiA8Rg
From: "Ling, Xiaofeng" <xiaofeng.ling@intel.com>
To: "Joel Becker" <Joel.Becker@oracle.com>, "Greg KH" <greg@kroah.com>
Cc: <linux-hotplug-devel@lists.sourceforge.net>,
       <linux-kernel@vger.kernel.org>
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> 
> On Wed, Jan 07, 2004 at 10:57:00AM -0800, Greg KH wrote:
 to create  16 partitions for every block device, if they need them or not.
> 
> 	Um, adding all 16 partitions for a block device that 
> has 5 defined is opposite of the intention of udev, no?  
> While I'd prefer the partition code in-kernel provide hotplug 
> events for each partition, if it is instead scanned by udev, 
> udev should indeed scan the partition table.  Remember, udev 
> should be able to give the appropriate system-defined names 
> for the partition, not just 'sda1'.
> 
> Joel
  I think current kernel do provide hotplug events for each partition, the
key problem is as Linus said, the most hardware will not give a event when
media changes.  So I just use a stupid way(just like "use a big button"),
pull out first and then plug in the flashdriver when changing the media 
or inserting a media to an empty driver. Then udev can remove the old 
node for and create new node for new media.