[BUG] I/O graphs aren't showing for `/dev/md` devices

[wallentx]

bpytop version: 1.0.67 psutil version: 5.8.1

This used to work fine, but I've since noticed that the graphs aren't working for any of my mdadm created devices.

python3 -c "import psutil, pprint; pprint.pprint(psutil.disk_partitions())" | grep ssdarray1
 sdiskpart(device='/dev/md0', mountpoint='/mnt/ssdarray1', fstype='xfs', opts='rw,noatime,nodiratime,swalloc,attr2,largeio,inode64,logbufs=8,logbsize=32k,sunit=1024,swidth=8192,noquota', maxfile=255, maxpath=4096)]

And I'm absolutely writing data to that volume.

It just quit working one day.

[wallentx]

This seems to be working when bpytop uses psutil 5.8.0