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add steps for initialozing zram

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This commit is contained in:
Tobias Powalowski 2022-06-02 08:36:00 +02:00
parent da8f4fdc20
commit 1b6f2d033e
1 changed files with 8 additions and 5 deletions
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13
usr/lib/archboot/update-installer.sh
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@ -121,18 +121,19 @@ _zram_initialize() {
echo -e "\033[1mStep 1/2:\033[0m Waiting for gpg pacman keyring import to finish ..."
echo -e " This takes some time ..."
_gpg_check
echo -e "\033[1mStep 2/2:\033[0m Moving initramfs / to /dev/zram0 ..."
echo -e " This takes some time ..."
# remove pacman-key init service
echo -e "\033[1mStep 2/8:\033[0m Disabling pacman-init.service ..."
systemctl disable pacman-init.service >/dev/tty7 2>&1
echo -e "\033[1mStep 3/8:\033[0m Initializing /dev/zram0 with ${_ZRAM_ALGORITHM} and ${_ZRAM_SIZE} size ..."
modprobe zram
echo ${_ZRAM_ALGORITHM} > /sys/block/zram0/comp_algorithm
echo ${_ZRAM_SIZE} > /sys/block/zram0/disksize
echo -e "\033[1mStep 4/8:\033[0m Creating btrfs filesystem on /dev/zram0 ..."
mkfs.btrfs -q --mixed /dev/zram0 > /dev/tty7 2>&1
# use -o discard for RAM cleaning on delete
# (online fstrimming the block device!)
# fstrim <mountpoint> for manual action
# it needs some seconds to get RAM free on delete!
echo -e "\033[1mStep 5/8:\033[0m Mounting /dev/zram0 to /new_root ..."
mount -o discard /dev/zram0 /new_root
# only run next step om tty1
cat << EOF > /etc/profile.d/zz-01-archboot.sh
@ -143,12 +144,14 @@ if [[ "\${TTY}" == "tty1" ]]; then
rm /etc/profile.d/zz-01-archboot.sh
fi
EOF
# copy running root to /new_root
echo -e "\033[1mStep 6/8:\033[0m Copying initramfs to /new_root ..."
echo -e " This takes some time ..."
tar -C / --exclude="./dev/*" --exclude="./proc/*" --exclude="./sys/*" --exclude="./tmp/*" --exclude="./run/*"\
--exclude="./mnt/*" --exclude="./media/*" --exclude="./lost+found" --exclude="./new_root/*" \
--exclude="./etc/pacman.d/S.*" -clpf - . | tar -C /new_root -xlspf -
# stop dbus before switching, else 90 seconds hang appears
echo -e "\033[1mStep 7/8:\033[0m Stopping dbus ..."
systemctl stop dbus
echo -e "\033[1mStep 8/8:\033[0m Switching root to /new_root ..."
systemctl switch-root /new_root
fi
}