Symptoms: Docker restart fails with error: failed to start daemon: error while opening volume store metadata database (/var/lib/docker/volumes/metadata.db): invalid database if(window.hljsLoader && !document.currentScript.parentNode.hasAttribute('data-s9e-livepreview-onupdate')) { window.hljsLoader.highlightBlocks(document.currentScript.parentNode); } Problem Storage driver in /etc/docker/daemon.json is changed from overlay2 to devicemapper, or from devicemapper to overlay2. Solution: Restore the file from backup or download orginal: for overlay2: docker/overlay2/xfs_file.json for devicemapper: docker/devicemapper/daemon.json then restart docker service.

[SOLVED] Docker: error while opening volume store metadata database

Docker restart fails with error:

failed to start daemon: error while opening volume store metadata database (/var/lib/docker/volumes/metadata.db): invalid database

Storage driver in/etc/docker/daemon.json is changed from overlay2 to devicemapper, or from devicemapper to overlay2.

Restore the file from backup or download orginal:

then restart docker service.