Hello, i have OpenMediaVault installed on a raspberrypi.
Release: 3.0.52
Codename: Erasmus
Linux raspberrypi 4.4.26-v7+ #915 SMP Thu Oct 20 17:08:44 BST 2016 armv7l GNU/Linux
When i look into the syslog, it is full of messages with rddcached errors. I don't know what is causing them and can't understand on the internet what this rddcache does.
Code
Nov 13 06:15:01 raspberrypi rrdcached[1379]: Received FLUSHALL
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-0/cpu-interrupt.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-0/cpu-interrupt.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-0/cpu-nice.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-0/cpu-nice.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-0/cpu-softirq.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-0/cpu-softirq.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-0/cpu-idle.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-0/cpu-idle.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-0/cpu-user.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-0/cpu-user.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-0/cpu-wait.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-0/cpu-wait.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-0/cpu-system.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-0/cpu-system.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-0/cpu-steal.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-0/cpu-steal.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-1/cpu-nice.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-1/cpu-nice.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-1/cpu-interrupt.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-1/cpu-interrupt.rrd' is not an RRD file)
Nov 13 06:15:01 raspberrypi rrdcached[1379]: queue_thread_main: rrd_update_r (/var/lib/rrdcached/db/localhost/cpu-1/cpu-idle.rrd) failed with status -1. ('/var/lib/rrdcached/db/localhost/cpu-1/cpu-idle.rrd' is not an RRD file)
.....
Nov 13 06:17:01 raspberrypi CRON[1929]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Nov 13 06:17:01 raspberrypi postfix/postsuper[1939]: Deleted: 6 messages
Nov 13 06:20:21 raspberrypi systemd[1]: Starting Cleanup of Temporary Directories...
Nov 13 06:20:21 raspberrypi systemd[1]: Started Cleanup of Temporary Directories.
Nov 13 06:25:01 raspberrypi CRON[2076]: (root) CMD (test -x /usr/sbin/anacron || ( cd / && run-parts --report /etc/cron.daily ))
Nov 13 06:26:10 raspberrypi cron-apt: CRON-APT RUN [/etc/cron-apt/config]: Sun Nov 13 06:10:50 CET 2016
Nov 13 06:26:10 raspberrypi cron-apt: CRON-APT SLEEP: 814, Sun Nov 13 06:24:24 CET 2016
Nov 13 06:26:10 raspberrypi cron-apt: CRON-APT ACTION: 0-update
Nov 13 06:26:10 raspberrypi cron-apt: CRON-APT LINE: /usr/bin/apt-get -o Acquire::http::Dl-Limit=25 update -o quiet=2
Nov 13 06:26:10 raspberrypi cron-apt: Creating index of upgradeable packages ...
Nov 13 06:26:10 raspberrypi cron-apt: Creating index of openmediavault plugins ...
Nov 13 06:26:10 raspberrypi cron-apt: W: GPG error: http://httpredir.debian.org jessie-backports InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010
Nov 13 06:26:11 raspberrypi postfix/postsuper[2141]: Deleted: 1 message
Nov 13 06:26:11 raspberrypi anacron[1156]: Job `cron.daily' terminated (mailing output)
Nov 13 06:26:11 raspberrypi anacron[1156]: Normal exit (1 job run)
Nov 13 06:30:01 raspberrypi CRON[2190]: (root) CMD (/usr/sbin/omv-mkgraph >/dev/null 2>&1)
Nov 13 06:30:01 raspberrypi rrdcached[1379]: Received FLUSHALL