Creating partition across physical HD's?

English Install/Boot/Login
1

I want to make a partition that’s bigger than my extra internal hard drive and bigger than the extra free space on my other HD. Basically I have 5 GB free on my master HD and a 10 GB slave HD, and I want to make a 15 GB partition.

  1. How would I go about doing this?
  2. Are there any issues? limitations?
  3. Any OpenSUSE-specific problems with it?
2

You could take a look at LVM

3

Thanks. Reading that, I am worried by one thing:

The current implementation does not support write barriers. This means that the guarantee against filesystem corruption offered by journaled file systems like ext3 and XFS is negated under some circumstances.[1] Most distros, with the notable exception of SUSE, turn off protective barriers by default anyway, to prevent performance degradation.

What are the risks of using LVM, then? What does this mean for the potential corruption of my data/HD?

4

You might try unionfs or aufs. Format the two partitions as you like and mount them as a union.

5

What changes about my OpenSUSE install if I do this? It appears that I have to change the whole thing over to LVM in order to do this at all.

Is there some info on how to use OpenSUSE’s LVM gui? Is that even recommended, or is there a better choice?