I have this too with Xenial. Looking at yesterday's syslog:
$ sudo grep -c "Ignored relative path" /var/log/syslog.1 19728
and here are the first few lines:
$ sudo grep -m30 ureadahead /var/log/syslog.1 Oct 6 08:00:20 dl1 systemd[1]: Stopped Stop ureadahead data collection 45s after completed startup. Oct 6 08:01:02 dl1 systemd[1]: Started Stop ureadahead data collection 45s after completed startup. Oct 6 08:01:47 dl1 systemd[1]: Starting Stop ureadahead data collection... Oct 6 08:01:47 dl1 systemd[1]: Started Stop ureadahead data collection. Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:events/fs/open_exec/enable: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:buffer_size_kb: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:tracing_on: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:binfmt_misc: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:dm/uuid: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: message repeated 11 times: [ ureadahead:dm/uuid: Ignored relative path] Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:.: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:1/stat: Ignored relative path Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:1/cmdline: Ignored relative path
I have this too with Xenial. Looking at yesterday's syslog:
$ sudo grep -c "Ignored relative path" /var/log/syslog.1
19728
and here are the first few lines:
$ sudo grep -m30 ureadahead /var/log/syslog.1 events/ fs/open_ exec/enable: Ignored relative path buffer_ size_kb: Ignored relative path tracing_ on: Ignored relative path binfmt_ misc: Ignored relative path 1/cmdline: Ignored relative path
Oct 6 08:00:20 dl1 systemd[1]: Stopped Stop ureadahead data collection 45s after completed startup.
Oct 6 08:01:02 dl1 systemd[1]: Started Stop ureadahead data collection 45s after completed startup.
Oct 6 08:01:47 dl1 systemd[1]: Starting Stop ureadahead data collection...
Oct 6 08:01:47 dl1 systemd[1]: Started Stop ureadahead data collection.
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:size: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:start: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:dm/uuid: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: message repeated 11 times: [ ureadahead:dm/uuid: Ignored relative path]
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:.: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead:1/stat: Ignored relative path
Oct 6 08:01:47 dl1 ureadahead[222]: ureadahead: