lttng-metadata(1)
=================


NAME
----
lttng-metadata - Manage an LTTng tracing session's metadata generation


SYNOPSIS
--------
[verse]
*lttng* ['linkgenoptions:(GENERAL OPTIONS)'] *metadata regenerate* [option:--session='SESSION']


DESCRIPTION
-----------
The `lttng metadata` command manages a tracing session's metadata
generation options.

As of this version, only the `regenerate` command's action is available.
Regenerating a tracing session's metadata can be used to
resample the offset between the system's monotonic clock and
the wall-clock time.

This command is meant to be used to resample the wall-clock time
following a major
link:https://en.wikipedia.org/wiki/Network_Time_Protocol[NTP]
correction. As such, a system booting with an incorrect wall time can be
traced before its wall time is NTP-corrected. Regenerating the tracing
session's metadata ensures that trace viewers can accurately determine
the events time relative to Unix Epoch.


include::common-cmd-options-head.txt[]


option:-s, option:--session='SESSION'::
    Manage the metadata generation of the tracing session named 'SESSION'
    instead of the current tracing session.


include::common-cmd-help-options.txt[]


LIMITATIONS
-----------
The `lttng metadata regenerate` command can only be used on kernel and
user space tracing sessions (using per-user buffering), in non-live
mode.

See man:lttng-enable-channel(1) for more information about
buffering schemes and man:lttng-create(1) for more information
about the different tracing session modes.


include::common-cmd-footer.txt[]


SEE ALSO
--------
man:lttng(1)