[linux-lvm] Configuring extent size

[Stuart D Gathman]

On 12/06/2010 08:33 PM, hansbkk at gmail.com wrote:
> Also, the man page state that the *default* extent size (if none is
> specified) is 4MB, but the HowTo states it's 32MB. Which is true?
>
> Or does this vary by vgcreate version, or per-distro configuration?
Based on experience, this varies by distro, so it must be a system
configuration option.
> having a large number of extents will slow down the tools

I believe only a large number segments (contiguous groups of extents)
slows things down.  I could be wrong. 

> leads me to:
>
> Would there be any negative impact of a very large extent size?
The only impact is unused space due to more granular allocation.