Re: Next set of device-mapper patches

[AJ Lewis <aj@terrascale.com>]

[-- Attachment #1.1: Type: text/plain, Size: 697 bytes --]

On Wed, Jun 21, 2006 at 01:44:15PM +0200, Milan Broz wrote:
> ioctl patch simple route ioctls to underlying block device
> -> it supports all ioctl which are supported by your physical device.
> 
> e.g.
> in simple case you have volume /dev/mapper/VolGroup00-LogVol0
> mapped to physical device /dev/sda, inquiry ioctl (using tools from 
> sg3_util)
> sg_inq /dev/sda   
> 	is the same as
> sg_inq /dev/mapper/VolGroup00-LogVol0
> 
> In the case of multipath target ioctl command is sent through
> active path.

So what happens when you have multiple block devices in the volume?  And what
if those block devices have different levels of support for the ioctls?
 
--
AJ Lewis 

[-- Attachment #1.2: Type: application/pgp-signature, Size: 186 bytes --]

[-- Attachment #2: Type: text/plain, Size: 0 bytes --]