ecbf6f298f
As part of the upstreaming effort, we need to add some extra tunings in the package. Especially related to GRUB autosetting and Pstore memory settings: (a) Currently the ramoops record size and memory amount are hardcoded in the kdump-load script - we change it here, by having these settings on the kdump config file; (b) GRUB autosetting is pretty simple and everything is hardcoded. We hereby add a bunch of configurable settings in the kdump conf file, in order we can customize the GRUB handling, to make it work in both Arch and SteamOS. While at it, fixed some related comments and renamed some variables, usually dropping KDUMP_ name when it applies to pstore as well. Also, bumped the crashkernel memory from 192M to 256M - recent kernels demand more memory, let's play safe. Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
64 lines
2.8 KiB
Bash
64 lines
2.8 KiB
Bash
#!/bin/sh
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#
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# SPDX-License-Identifier: LGPL-2.1+
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#
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# Copyright (c) 2021 Valve
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# Maintainer: Guilherme G. Piccoli <gpiccoli@igalia.com>
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#
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# Configuration settings for kdump/pstore. After _any_ change in this
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# file, it's required to re-create the kdump minimal initramfs by running:
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# /usr/lib/kdump/kdump-load.sh initrd
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#
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#
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# Pstore-RAM settings
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# If USE_PSTORE_RAM is set to 1, Kdump won't be loaded. Instead, the Pstore
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# RAM backend will be configured. In order to have success, this operation
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# relies in having an available RAM buffer on /proc/iomem with at least
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# PSTORE_MEM_AMOUNT (decimal, in MB) in size. Also, kernel must be able to
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# allocate a contiguous memory amount of PSTORE_RECORD_SZ (decimal, MB).
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USE_PSTORE_RAM=1
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PSTORE_MEM_AMOUNT=5242880
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PSTORE_RECORD_SZ=2097152
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#
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#
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# Mount-related options
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# MOUNT_DEVNODE is the desired mount-point unique link in the /dev/disk
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# directory link; this is used to derive the numerical devnode for kdump,
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# since the link is not present so early in the system boot. MOUNT_FOLDER
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# should live in the filesystem of the devnode (and will be created if
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# doesn't exist); this is the place in which both pstore and kdump logs
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# will be stored, as well as the kdump initrd and some ancillary data.
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# Finally, MNT_TMP is just a temporary file that carries the full path
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# of the mounted folder across boot-time scripts.
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MOUNT_DEVNODE="/dev/disk/by-partsets/shared/home"
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MOUNT_FOLDER="/.steamos/offload/var/kdump"
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MNT_TMP="/tmp/.kdump_load.mnt"
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#
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#
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# Kdump controlling settings
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# Currently we only do local storage log collection (no network/iscsi dumps).
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# If FULL_COREDUMP is !=0, we collect a full compressed vmcore, which might
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# require a lot of disk space. The MAKEDUMPFILE_*_CMD settings refer to
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# tunings on makedumpfile - we rely on zstd compression and maximum page
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# exclusion for the full vmcore, mimic'ing Debian kdump
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FULL_COREDUMP=0
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MAKEDUMPFILE_COREDUMP_CMD="-z -d 31"
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MAKEDUMPFILE_DMESG_CMD="--dump-dmesg"
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#
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#
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# GRUB-related settings
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# GRUB_AUTOSET determines if the pstore/kdump tooling should try to
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# automatically set grub.cfg in order to reserve memory for kdump (if
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# needed, i.e., when pstore is not in use) - keep it as '1' for enabling
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# the mechanism (this is the default). GRUB_BOOT_FILE is the full path of
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# grub.cfg file - this is used in the config update step plus for syncing
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# purposes. GRUB_CFG_FILE is the config file we edit in order to add/remove
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# the crashkernel parameter. Finally, GRUB_CMDLINE holds the change to be
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# made in the grub config file, specially the crashkernel memory reservation
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# (notice that a trailing space is required in this line, so we avoid
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# messing with other kernel parameters).
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GRUB_AUTOSET=1
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GRUB_BOOT_FILE="/efi/EFI/steamos/grub.cfg"
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GRUB_CFG_FILE="/etc/default/grub"
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GRUB_CMDLINE="crashkernel=256M crash_kexec_post_notifiers "
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