Re: question about path_id of scsi hard disk

[James Bottomley <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>]

On Fri, 2012-07-20 at 16:24 +0800, gaoqiang wrote:
> I'm using udev to manage my hard disks. but I'm confusing
> about the "PATH_ID"
> 
> gaoqiang@h150:~$/lib/udev/path_id  /block/sda
> ID_PATH=pci-0000:01:00.0-scsi-0:0:0:0
> 
> the path_id is about disk or about disk slot ?

Neither: it's pci function and scsi host:channel:target:lun

As far as I can tell, path_id returns are completely useless for
labelling disks (since host and sometimes target are scan order
dependent).

James


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