Ubuntu Manpage: pstore.conf, pstore.conf.d

Provided by: systemd_255.4-1ubuntu8.5_amd64

NAME

       pstore.conf, pstore.conf.d - PStore configuration file

SYNOPSIS

       /etc/systemd/pstore.conf /etc/systemd/pstore.conf.d/*

DESCRIPTION

       This file configures the behavior of systemd-pstore(8), a tool for archiving the contents of the
       persistent storage filesystem, pstore[1].

CONFIGURATION DIRECTORIES AND PRECEDENCE

The default configuration is set during compilation, so configuration is only needed when it is necessary
to deviate from those defaults. The main configuration file is either in /usr/lib/systemd/ or
/etc/systemd/ and contains commented out entries showing the defaults as a guide to the administrator.
Local overrides can be created by creating drop-ins, as described below. The main configuration file can
also be edited for this purpose (or a copy in /etc/ if it's shipped in /usr/) however using drop-ins for
local configuration is recommended over modifications to the main configuration file.

In addition to the "main" configuration file, drop-in configuration snippets are read from
/usr/lib/systemd/*.conf.d/, /usr/local/lib/systemd/*.conf.d/, and /etc/systemd/*.conf.d/. Those drop-ins
have higher precedence and override the main configuration file. Files in the *.conf.d/ configuration
subdirectories are sorted by their filename in lexicographic order, regardless of in which of the
subdirectories they reside. When multiple files specify the same option, for options which accept just a
single value, the entry in the file sorted last takes precedence, and for options which accept a list of
values, entries are collected as they occur in the sorted files.

When packages need to customize the configuration, they can install drop-ins under /usr/. Files in /etc/
are reserved for the local administrator, who may use this logic to override the configuration files
installed by vendor packages. Drop-ins have to be used to override package drop-ins, since the main
configuration file has lower precedence. It is recommended to prefix all filenames in those
subdirectories with a two-digit number and a dash, to simplify the ordering of the files. This also
defined a concept of drop-in priority to allow distributions to ship drop-ins within a specific range
lower than the range used by users. This should lower the risk of package drop-ins overriding
accidentally drop-ins defined by users.

To disable a configuration file supplied by the vendor, the recommended way is to place a symlink to
/dev/null in the configuration directory in /etc/, with the same filename as the vendor configuration
file.

OPTIONS

       All options are configured in the [PStore] section:

       Storage=
           Controls where to archive (i.e. copy) files from the pstore filesystem. One of "none", "external",
           and "journal". When "none", the tool exits without processing files in the pstore filesystem. When
           "external" (the default), files are archived into /var/lib/systemd/pstore/, and logged into the
           journal. When "journal", pstore file contents are logged only in the journal.

           Added in version 243.

       Unlink=
           Controls whether or not files are removed from pstore after processing. Takes a boolean value. When
           true, a pstore file is removed from the pstore once it has been archived (either to disk or into the
           journal). When false, processing of pstore files occurs normally, but the files remain in the pstore.
           The default is true in order to maintain the pstore in a nearly empty state, so that the pstore has
           storage available for the next kernel error event.

           Added in version 243.

       The defaults for all values are listed as comments in the template /etc/systemd/pstore.conf file that is
       installed by default.

NOTES