I still see these errors on R Pi4
# This file is auto-generated by openmediavault (https://www.openmediavault.org)
# WARNING: Do not edit this file, your changes will get lost.
# /etc/default file for RRD cache daemon
# Full path to daemon
# Optional override flush interval, in seconds.
# Where database files are placed. If left unset, the default /tmp will
# be used. NB: The daemon will reject a directory that has symlinks as
# components. NB: You may want to have -B in BASE_OPTS.
# Where journal files are placed. If left unset, journaling will
# be disabled.
# FHS standard placement for process ID file.
# FHS standard placement for local control socket.
# Any other options not specifically supported by the script (-P, -f,
# -F, -B).
BASE_OPTIONS="-B -F -f 3600"
and running omv-salt deploy run rrdcached did not help.