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35 lines
1.5 KiB
Plaintext
35 lines
1.5 KiB
Plaintext
# SPDX-License-Identifier: LGPL-2.1-or-later
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#
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# The systemd-pstore.service(1) archives the contents of /sys/fs/pstore
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# upon boot so that there is room for a subsequent dump. This service
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# is enabled with:
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# systemctl enable systemd-pstore
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#
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# With the service enabled, the kernel still needs to be configured
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# to write data into the pstore. The kernel has two parameters,
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# crash_kexec_post_notifiers and printk.always_kmsg_dump, that
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# control writes into pstore.
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#
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# The crash_kexec_post_notifiers parameter enables the kernel to write
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# dmesg (including stack trace) into pstore upon a panic even if kdump
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# is loaded, only needed if you want to use pstore with kdump. Without
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# this parameter, kdump could block writing to pstore for stability
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# reason. Note this increases the risk of kdump failure even if pstore
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# is not available.
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#
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# The printk.always_kmsg_dump parameter enables the kernel to write dmesg
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# upon a normal shutdown (shutdown, reboot, halt).
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#
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# To configure the kernel parameters, uncomment the appropriate
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# line(s) below. The value written is either 'Y' to enable the
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# kernel parameter, or 'N' to disable the kernel parameter.
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#
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# After making a change to this file, do:
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# systemd-tmpfiles --create path/to/tmpfiles.d/systemd-pstore.conf
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#
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# These changes are automatically applied on future re-boots.
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d /var/lib/systemd/pstore 0755 root root 14d
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#w- /sys/module/printk/parameters/always_kmsg_dump - - - - Y
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#w- /sys/module/kernel/parameters/crash_kexec_post_notifiers - - - - Y
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