On Mon, Oct 03, 2016 at 07:59:41AM +0100, Bryn M. Reeves wrote: > On Sun, Oct 02, 2016 at 02:10:50AM -0300, Andre Caldas wrote: > > As I understood it, when I call > > $ kpartx -a disk.img > > kpartx chooses a "device name" X, detects the partitions and their > > numbers N, and creates device nodes with naming > > XpN. > > This command performs several steps for you. You can have greater > control by issuing those steps yourself: > > 1. Create a loop device mapping the image (/dev/loopN) > 2. Create a device-mapper device with a linear map of the loop: > > # dmsetup create $DEV_NAME --table="0 $DEV_SIZE linear /dev/loopN" Typo: this should be "0 $DEV_SIZE linear /dev/loopN 0" (an extra '0' at the end) - this is the starting offset for the mapping, which is always zero for a whole-disk device. Regards, Bryn. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
