조완근 wrote:
Hello, I'm at the beginning to use LVM in my machine.
Could you give any information on the implementation details of LVM and
device mapper?? More specifically, I want to change the "mapping between
PE and LE" for some purposes, however I'm just finished to read the
manual of LVM-HowTO. This means that I'm totally a newbie in LVM and
device-mapper. I just read some codes on data
...
I'll use LVM for this purpose - I would like to make a program to change the
mapping relationship between PE and LE in my own. In fact, the program's goal
is to move an extent in a bad disk to a disk with good performance. The movement
is done by the extent. In order to do it, I definitely, have to know how I can
modify the mapping and maybe, the entire structure of LVM and device mapper.
Hmm, are you realy finished to read the manual :-)
Sounds to me like you reinvent the "pvmove" command.
This is not "some purpose" but a central task
LVM performs for you on demand!
regards, Dieter.
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