Dmitry Mishin wrote:
Where I can know about co-operation LVM tools and kernels? Whether it is possible to activate LVs (lvchange -a y) without a package LVM?
The tools read and interpret metadata stored on the physical devices, or in the file system. They use this data to instruct the kernel device-mapper to create mapped devices that correspond to the volumes described in the metadata using the device-mapper ioctl interface (via libdevmapper).
See Alasdair's talks for more information on how all the pieces fit together:
http://people.redhat.com/agk/talks/ Regards, Bryn.