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kdump_load.sh, kdump.etc: Introduce GRUB auto-setting support

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With this addition, kdump-steamos is now capable of editing grub.cfg
to automatically add the required kdump parameters, in case kdump
is used. If Pstore ends-up being used and the grub.cfg was mofified
by kdump-steamos automatically, we're also able to undo the change
and save users from memory waste.

Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
This commit is contained in:
Guilherme G. Piccoli
2022-02-11 12:39:24 -03:00
parent 0dd74fc114
commit ea5f104c70
4 changed files with 69 additions and 30 deletions
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10
kdump.etc
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@ -18,15 +18,19 @@ MOUNT_DEVNODE="nvme0n1p8"
KDUMP_FOLDER="/.steamos/offload/var/kdump"
KDUMP_MNT="/tmp/kdump.mnt"
# Dump controlling settings - for now we don't have network/iscsi dumps, only
# Kdump controlling settings - for now we don't have network/iscsi dumps, only
# local storage dumps. If FULL_COREDUMP is !=0, we collect a full compressed
# vmcore, which might require a lot of disk space. The *_CMD settings refer
# to tunnings on makedumpfile - we rely on zstd compression and maximum page
# exclusion for the full vmcore, mimic'ing Debian kdump.
# to tunings on makedumpfile - we rely on zstd compression and maximum page
# exclusion for the full vmcore, mimic'ing Debian kdump. Finally, GRUB_AUTOSET
# determines if kdump-steamos should try to automatically set grub.cfg in
# order to reserve memory for kdump (if needed, i.e., when pstore is not in
# use) - keep it as '1' for enabling the mechanism (this is the default).
FULL_COREDUMP=0
MAKEDUMPFILE_COREDUMP_CMD="-z -d 31"
MAKEDUMPFILE_DMESG_CMD="--dump-dmesg"
GRUB_AUTOSET=1
# Pstore-RAM setting - if enabled, Kdump won't be loaded, instead the Pstore
# RAM backend will be configured. In order to have success, this operation