Trying to expand a Synology volume

The Synology array finally finished its scrubbing operation. It took almost three days — actually longer than a rebuild.

After scrubbing, I tried once more to expand the volume:

The storage manager showed that it was confirming the parity, but with no progress information, and no CPU load:

That was strange. I figured I’d give it a day or so to sort itself out. Next next day, I noticed that it wasn’t serving files any more:

But the administrative panel was still happy/ Still no progress indication ,though:

I checked for disk activity and found none:

I tried to shut the file server down, but it the OS wouldn’t let me:

So now I have a file server that’s not serving, an expansion that looks like it’s hung, and no way to reboot except to cycle the power.

Time for Synology support.