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

Provided by: systemd_255.4-1ubuntu8.4_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