[gpfsug-discuss] Sub-block size not quite as expected on GPFS 5 filesystem?

[Stephen Ulmer]

> On Aug 1, 2018, at 8:11 PM, Andrew Beattie <abeattie at au1.ibm.com> wrote:
> 

[…]

>  
> which is probably why 32k sub block was the default for so many years ....


I may not be remembering correctly, but I thought the default block size was 256k, and the sub-block size was always fixed at 1/32nd of the block size — which only yields 32k sub-blocks for a 1MB block size.

I also think there used to be something special about a 16k block size… but I haven’t slept well in about a week, so I might just be losing it.

-- 
Stephen

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