Corey Hickey wrote:

Marko Berg wrote:

quoted

Bill Davidsen wrote:

quoted

Marko Berg wrote:

quoted

Any suggestions on how to fix this, or what to investigate next, 
would be appreciated!

I'm not sure what you're trying to "fix" here, everything you posted 
looks sane.

I'm trying to find the missing 300 GB that, as df reports, are not 
available. I ought to have a 900 GB array, consisting of four 300 GB 
devices, while only 600 GB are available. Adding the fourth device 
didn't increase the capacity of the array (visible, at least). E.g. 
fdisk reports the array size to be 900 G, but df still claims 600 
capacity. Any clues why?

df reports the size of the filesystem, which is still about 600GB--the 
filesystem doesn't resize automatically when the size of the 
underlying device changes.

You'll need to use resize2fs, resize_reiserfs, or whatever other tool 
is appropriate for your type of filesystem.

-Corey 

Right, so this isn't one of my sharpest days... Thanks a bunch, Corey!

-- 
Marko