Docker: failed to start daemon: error while opening volume store metadata database: timeout

Question

When I try to run Docker:

sudo dockerd

I get this exception:

failed to start daemon: error while opening volume store metadata database: timeout

What I've tried but didn't help:

ps axf | grep docker | grep -v grep | awk '{print "kill -9 " $1}' | sudo sh 

Answer 1

The problem was that I had two instances of Docker running. I solved that by killing them and then started docker again using systemctl start docker