/sys/block/md0 still present after mdadm -S and -r

Hi All,

I created an md device as follows:

mdadm -C -f -e 1.0 -R /dev/md0 -l 0 -n 2 -c 32 /dev/sdc1 /dev/sdg1

It was successful and started.

I then want to delete this md device and did as follows:

mdadm -S /dev/md0
mdadm /dev/md0 -r
mdadm --zero-superblock /dev/sdc1
mdadm --zero-superblock /dev/sdg1

I did not receive any errors. Afterwards, md0 was no longer visible in /proc/mdstat.

However, there is still /sys/block/md0 entry, as well as an /dev/md0 entry. I would have expected these to be gone.

Is my md0 not getting fully deleted?

Thanks!
Thomas