On Mon, Dec 22, 2008 at 10:52:08PM +0530, Sandeep K Sinha wrote: > After looking at the complete implementation of device mappers, I > figured out that we can have more than one target for a mapped device > then why do we have a check for the number of target to be equal to > one , in dm_blk_ioctl ( ) in drivers/md/dm.c > > http://lxr.linux.no/linux+v2.6.27.10/drivers/md/dm.c#L337 Because whether or not it makes sense to send any specific ioctl to more than one target in parallel depends on what that ioctl does. When we added that code we said that we could add hard-coding for specific ioctls if the need arose, but so far it hasn't. Alasdair -- agk@xxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
