In article <41019AF7.DED151D9@club-internet.fr>, Stephane Gassies wrote:
> With JFS and default NBPI, your maximum filesystem size will
> be 64 Gb (~68000 Mb). Any greater value for NBPI will allow you
> to cross that limit.
>
> NBPI & allocation group size depend on your filesytem usage, but
> I would say that your choice is OK.
>
> OBS: you could have avoided that trouble with JFS2 instead of JFS,
> but there are other consideration with JFS2 that maybe not interest
> you.
>
> Mike a écrit:
>>
>> This has always been confusing to me. I have some new disk I need
>> to put into a large filesystem. The final filesystem is 137GB and
>> within this filesystem one of the files will range in size from
>> 100GB -> 137GB, consuming the entire filesystem. I can create the
>> filesystem, but when I test the filesystem by creating a file that
>> is 100GB it fails at ~68GB.
>>
>> What choices of NBPI and Allocation Group Size should I use for
>> this filesystem? I have tried several and the current is 16K
>> NBPI and 64M Allocation Group Size.
>>
>> (AIX 5.2)
>>
>> Mike

It was the 64GB limit causing the problem. Next week we will create
the filesystem as JFS2.

Mike