Thanks for the clarifications Robin.
As regards the discussion around whether the increase should be done all at once, or in smaller steps, I note the following:
In the man page for chfs it says
Quote:
5. During the period that the shrink or extend is running, the
file system is not accessible. Large file systems with
inline logs might not be usable for as long as several
minutes. The inline log must be completely reformatted .
So, it may well be advisable to do the change incrementally in some situations - particularly on live production servers.
Thanks bakunin and agent.kgb for input too :-).
Cheers, Alan.