Ext2online

[Justin Conover]

On 7/7/05, Jeff Spaleta <jspaleta at gmail.com> wrote:
> On 7/7/05, Justin Conover <justin.conover at gmail.com> wrote:
> > Does Fedora do 4k by default?  Does this also mean that after he added
> > another 15.5, if he wanted to increase again he can go up to 15.5 or
> > am I reading that incorrectly?
> 
> Pretty sure you are reading that incorrectly.
> think of it as a head room limit associated with filesystem metadata.
> For any filesystem of size X, where X is between (n)*16 Gb and
> (n+1)*16 Gb where n is an a positive integer, the same amount of
> headroom is avaliable for filesystem metadata. The online resize can
> move the value of X only up to the (n+1)*16 Gb limit, no matter what X
> actually is.  Anything beyond that boundary requires additional
> metadata headroom which can only be added offline.
> 
> So a 14 Gig filesystem and a 15.5 Gig filesystem, can both only be
> online resized upto 16 Gig.  Similarly a 23 and a 17 Gig filesystem
> can only be brought up to 32Gig, which is the next 16 Gig increment.
> 
> -jef"yeah for algebra!"spaleta
> 

Well I guess I'm still confused :)

If you run vgdisplay and you have lets say 200GB free, you can still
extend an lv to any size you want up to 200GB, correct?