Partitioning questions

[JB]

Alex <mysqlstudent <at> gmail.com> writes:

> ... 
> So on a system where there will never be any disks added or partitions
> resized, is the extra complexity (abstraction) worthwhile?
> ...

LVM is a form of storage virtualization.

Pros and cons of it:
http://en.wikipedia.org/wiki/Storage_virtualization

Another source:
http://www.markus-gattol.name/ws/lvm.html
...
Let us start with what features are provided by LVM:
...
Stripe whole or parts of LVs across multiple PVs, in a fashion similar to RAID 0.
Mirror whole or parts of LVs, in a fashion similar to RAID 1.
...
And now something that does not work with LVM:
LVM does not provide parity-based redundancy across LVs as with RAID 4, RAID 5
or RAID 6. This functionality is instead provided by Linux metadisks, Hardware
RAID arrays or LUNs (Logical Unit Numbers) mounted from some SAN, which can be
used as LVM PVs.
...

JB