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
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