Swap Space

After [some] reading topic on swap space, it crossed my mind if swap space, created through LVM, can be extended? This is in consideration to limited available physical disk to be attached to the system, and not having to use a file system swap. On the sidetrack, consider 2 small swap spaces [on faster disks, of course], than 1 large one; same priority for similar device swap spaces. After asking my colleague (which by the way, he refused to answer since he's not sure about it and I know he's sincere), and finally reading about it (not my first choice today since I'm too lazy), I came to know that it depends on how it was created. As reference to the book I was reading, it was created with basically default options. So extending it, is only subject to availability of free PEs/LEs. But, the more interesting idea was, what if, and I think this is how swap spaces should be created, it was created contiguous-ly [and usually the succeeding spaces are used], how are we going to proceed? As suggested by the manual from HP, you can re-create the swap space to retain the contiguous allocation and also increase the space you need.

# lvcreate -C y -L <new_size> -r n -n <lv_name> /dev/<vg_name>
# lvlnboot -s /dev/<vg_name>/<lv_name>

The second command above is used to set the swap as primary. Check /etc/fstab if it needs to be corrected. And of course, don't forget to reboot your system.

HTH. Open to suggestions/corrections... see ya' round.