tmpfiles.d/systemd-pstore.conf

   1 # SPDX-License-Identifier: LGPL-2.1+
   2 #
   3 # The systemd-pstore.service(1) archives the contents of /sys/fs/pstore
   4 # upon boot so that there is room for a subsequent dump. This service
   5 # is enabled with:
   6 #  systemctl enable systemd-pstore
   7 #
   8 # With the service enabled, the kernel still needs to be configured
   9 # to write data into the pstore. The kernel has two parameters,
  10 # crash_kexec_post_notifiers and printk.always_kmsg_dump, that
  11 # control writes into pstore.
  12 #
  13 # The crash_kexec_post_notifiers parameter enables the kernel to write
  14 # dmesg (including stack trace) into pstore upon a panic, and
  15 # printk.always_kmsg_dump parameter enables the kernel to write dmesg
  16 # upon a normal shutdown (shutdown, reboot, halt).
  17 #
  18 # To configure the kernel parameters, uncomment the appropriate
  19 # line(s) below. The value written is either 'Y' to enable the
  20 # kernel parameter, or 'N' to disable the kernel parameter.
  21 #
  22 # After making a change to this file, do:
  23 #  systemd-tmpfiles --create path/to/tmpfiles.d/systemd-pstore.conf
  24 #
  25 # These changes are automatically applied on future re-boots.
  26
  27 d /var/lib/systemd/pstore 0755 root root 14d
  28 #w- /sys/module/printk/parameters/always_kmsg_dump - - - - Y
  29 w- /sys/module/kernel/parameters/crash_kexec_post_notifiers - - - - Y