tracker-daemon(1) User Commands tracker-daemon(1)

NAME

tracker-daemon - Start, stop, restart and list daemons responsible
for indexing content

SYNOPSIS

tracker daemon [options...]
tracker daemon -s | -t [daemons] | -k [daemons] | -l
tracker daemon -f | -w [ontology]
tracker daemon --miner <miner> --pause[-for-process] <reason>
tracker daemon --miner <miner> --resume <cookie>

DESCRIPTION

Tracker has many components to it including a "store" for handling
data set updates and "miners" for handling data mining in their
respective areas.

The tracker daemon command allows for control of these components.
This ranges from starting, stopping and killing processes to pausing
and resuming them.

In addition to all this, there are ways to change the log verbsity
for all processes that generate logs and to follow or watch what is
happening in real time from a top level and right down where the
SPARQL commits are happening too.

If no arguments are provided this command will show the current
status of all Tracker entities (store and all available data miners).

For tracker-store, the status is always "Idle" unless it is restoring
a backup and/or replaying a journal (see also tracker reset --soft).
For a list of common statuses, see --list-common-statuses.

The data miners can be paused or resumed using this command and you
can also list miners running and available.

OPTIONS

-p, --list-processes
This lists all Tracker processes in the system.

-k, --kill=[daemons]
This uses SIGKILL to stop all Tracker processes found matching
the parameter, if no extra parameter is passed, "all" will be
assumed. This is not advised unless you are having problems
stopping Tracker in the first place. This GUARANTEES death.

The possible daemons options are:

+o all - All daemons.

+o store - Only the tracker-store.

+o miners - Only data miners.


-t, --terminate=[daemons]
This uses SIGTERM to stop all Tracker processes found matching
the parameter, if no extra parameter is passed, "all" will be
assumed. This is recommended over --kill because it gives the
processes time to shutdown cleanly.

For a list of possible daemons, see --kill.

-s, --start
Starts all miners. This indirectly starts tracker-store too
because it is needed for miners to operate properly. The store
is started from D-Bus.

--get-log-verbosity
This displays the log verbosity for ALL components using
GSettings for this configuration. For possible values, see
--set-log-verbosity.

--set-log-verbosity=<verbosity>
This sets the log verbosity for ALL daemons using GSettings to
store their "verbosity" configuration.

The possible verbosity options are:

+o debug - Show EVERYTHING, from debug messages to errors.
This often includes actual SQL being executed.

+o detailed - Show enough detail to understand what is
happening.

+o minimal - Show an overview of what is going on, e.g.
stats and when things start or stop.

+o errors - Show only warnings, criticals, errors or fatal
events.


-f, --follow
Follow status changes to daemons as they happen. This is a top
level view of what is happening. You will see the name for
each daemon and a state with the progress in that state.

This requires Ctrl+C to stop and return to the command line.
Each new status is put on a new line.


-w, --watch=[ontology]
Watch changes that happen to the database in real time. This
requires Ctrl+C to stop and return to the command line.

If ontology is unspecified, all updates are shown. The
ontology can be a comma separated list of shorthand or long
hand ontology properties. For example:

$ tracker-control -w nie:url,nie:mimeType,nfo:fileSize,nie:dataSource
Now listening for resource updates to the database
All nie:plainTextContent properties are omitted

Press Ctrl+C to stop

'nfo:Document'
'nfo:fileSize' = '1770'
'nie:dataSource' = 'http://www.tracker-project.org/ontologies/tracker#extractor-data-source'
'nie:mimeType' = 'text/plain'
'nie:url' = 'file:///home/martyn/.bash_aliases'
'nfo:Document'
'nie:dataSource' = 'http://www.tracker-project.org/ontologies/tracker#extractor-data-source'

...


--list-common-statuses
This will list statuses most commonly produced by miners and
the store. These statuses are not translated when sent over D-
Bus and should be translated by each application. These are
not considered static and are subject to change at any point.

Additionally, these statuses are not the only ones which may
be reported by a miner. There may be other states pertaining
to the specific roles of the miner in question.

--list-miners-running
This will list all miners which have responded to a D-Bus
call. Sometimes it is helpful to use this command with
--list-miners-available.

--list-miners-available
This will list all miners which are available even if they are
not running at the moment.

--pause-details
For listing all miners which are paused and the reasons for
being paused, you can use this. It will also display the
application that requested the pause too.

--miner=<miner>
This argument is used with --pause or --resume to say which
miner you want to pause or resume. You can use the full D-Bus
name, e.g. "org.freedesktop.Tracker1.Miner.Files" OR you can
use the suffix, e.g. "Files".

--pause=<reason>
The reason here is useful to know WHY the miner should be
paused. A miner can be paused many times by multiple
applications. Only when all pauses have been resumed will it
continue. If successful, a cookie will be given to uniquely
identify the request. This cookie is used to resume the pause
at a later stage.

--pause-for-process=<reason>
This works exactly the same way as --pause with the exception
that it only keeps the pause active while the calling process
is alive. As soon as you press Ctrl+C the pause is resumed
automatically.

--resume=<cookie>
The cookie is given by a successful --pause command. It is a
number which identifies each pause request. When all pauses
have been resumed, the miner will resume working.

ENVIRONMENT

TRACKER_MINERS_DIR
Miners that are installed should have a .desktop file in
/usr/share/tracker/miners/, this is how tracker-control knows
about miners which exist but may not have not been started.
This environment variable allows the location that miner
.desktop files are loaded from to be overridden by setting it
to a new path.

TRACKER_MINERS_DIR_DISABLED
If you don't have .desktop files for miners, you can use this
environment variable to get status information from RUNNING
processes. This doesn't give any indication for miners NOT
running. This uses registered miners on DBus to know about
existing Tracker based data miners.

SEE ALSO

tracker-store(1).

GNU September 2014 tracker-daemon(1)