gnome-disk-utility provides libraries and applications for dealing
with storage devices.

GNOME Disks:
View, modify and configure disks and media
https://wiki.gnome.org/Apps/Disks

gnome-disk-image-mounter:
Attach and mount disk images

gsd-disk-utility-notify:
gnome-disk-utility notification plugin for GNOME Settings Daemon
Disk health failure notification (SMART status)