[CentOS] Re: Anaconda doesn't support raid10

[John R Pierce]

> Well the reason not to put /boot on the same spindles as md1 has 
> already been mentioned a few times.  Basically flexibility.
> What do you mean LVM doesn't really do striping?  What does globbing 
> mean?  Does it mean there is no performance difference between 
> striping LVM and just concatenating 2 raid1's?


conventional stripesets tend to use a stripe size around 32k or 128k 
bytes.   LVM tends to use a fairly large PE size, often 32MB.   LVM -is- 
striping these PE's, if you told it to do that, but its striping with 
this very large chunk size, which means far fewer individual disk 
operation will utilize both logical drives.   If you have lots of 
concurrent disk accesses, this may not matter.