Hi All, I am trying to use DM on my machine. My machine is Redhat Linux - 8.0, kernel level 2.4.21 with properly applied patches for DM. I also have device mapper tools installed properly on my machine. My problem is, when I tried to create a volume using dmsetup create command with table file named dmsetup, I got following error message. $ dmsetup create dmsetup dmsetup device-mapper ioctl cmd 9 failed: Invalid argument Command failed contents of dmsetup file 0 200781 linear /dev/hda7 0 200781 401562 linear /dev/hdb8 0 I also won't find any document which will help in setting DM so if any one knows where i can get the document regarding DM setup it will be of great help to me. Please help me to solve the problem. Thanks and kind regards, - Kiran Get Your Private, Free E-mail from Indiatimes at http://email.indiatimes.com Buy The Best In BOOKS at http://www.bestsellers.indiatimes.com Bid for for Air Tickets @ Re.1 on Air Sahara Flights. Just log on to http://airsahara.indiatimes.com and Bid Now!