Same answer, unfortunately.

root@fw1dv:~# parted -s /dev/sdb mklabel msdos; sleep 10;parted -s /dev/sdb 
mkpart primary "" 32256B 134249471B; sleep 10;parted -s /dev/sdb mkpart 
extended "" 134249472B 60022480895B; sleep 10; parted -s /dev/sdb mkpart 
logical "" 134249984B 2281724927B
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Warning: The resulting partition is not properly aligned for best performance.
Error: Error informing the kernel about modifications to partition /dev/sdb5 -- 
Device or resource busy.  This means Linux won't know about any changes you 
made to /dev/sdb5 until you reboot -- so you shouldn't mount it or use it in 
any way before rebooting.
Error: Failed to add partition 5 (Device or resource busy)


> 
> I don't think this is what is supposed to happen - nothing is using that 
> device,
> so one should be able to create all the partitions and do whatever partition
> table manipulation one wants to do. The device shouldn't be "busy". But, well,
> maybe udev is. Could you please redo that experiment with "sleep 10" in 
> between
> the parted calls?



> 
> Thanks a lot,
> Michael
> 

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