Eu não vi essas montagens tmpfs /run/credentials ... listadas em minha df
saída antes.
É sobre o que
:> df -h
Filesystem Size Used Avail Use% Mounted on
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-udev-load-credentials.service
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-network-generator.service
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-journald.service
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-tmpfiles-setup-dev-early.service
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-tmpfiles-setup-dev.service
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-sysctl.service
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-networkd.service
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-vconsole-setup.service
tmpfs 1.0M 0 1.0M 0% /run/credentials/systemd-tmpfiles-
Parecem credenciais do systemd , que são uma forma de expor informações confidenciais aos serviços do systemd: