Hi Phil,

On 17/05/2020 22:56, Phil Turmel wrote:

Your math is wrong.  Or rather, you are using the bogus power-of-ten 
definition of "MB" that disk manufacturers use to deliver less space.

Use 128MB.  Or better, specify "262144s".

Thanks very much, that was the final thing, and now I have a working 
array again and don't have to worry about pulling 6TB of data down from S3.

I had no idea that you could use sectors as a suffix to data-offset as 
it's not in the manpage. So you should find attached a patch file which 
adds that suffix to the manpage. If this isn't the correct place to 
provide patches, or if there's an issue with the formatting of my patch, 
please let me know and I'll happily update it and send it to the correct 
place.

Best Regards,
Sam