Re: [Xen-users] lvm

[Michael David Crawford <mdc@xxxxxxxxx>]

I'm about to install a whole bunch of DomUs, each with a different 
operating system.
It's definitely faster not to use a file-backed block device.  LVM is 
more flexible than partitions, and partitions are somewhat tedious (and 
dangerous) to set up.
Is there any *measurable* overhead of using LVM as opposed to simple 
partitions?
The two concerns I have are, how quickly can the physical disk sector 
number be calculated given the sector offsite in the device (either 
partition or LVM), and whether LVMs can be made physically contiguous.
Mike
--
Michael David Crawford
mdc@xxxxxxxxx

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