sonic-buildimage/installer/default_platform.conf
Xichen96 a5e180552f
add processor.max_cstate=0 to intel cpu cmdline (#16339)
Why I did it
This is a fix for PR [kernel] Change grub cmdline to set c-states to 0 for "Intel" CPUs by shlomibitton · Pull Request #6051 · sonic-net/sonic-buildimage (github.com)

The original PR will disable intel idle driver but it cannot limit the max c-state to 1 due to system will fall back to acpi idle driver.

Currently intel_idle.max_cstate=0 is already present, which will disable intel idle driver. With the added option, common idle driver will be disabled as well, so there will not be idle management. This is to prevent a bug that can be triggered by idle instruction on intel platform.

How I did it
Add the option to installer file beside intel_idle.max_cstate=0
2023-08-31 08:47:46 -07:00

625 lines
22 KiB
Bash
Executable File

#!/bin/sh
# Pick up console port and speed from install enviroment if not defined yet.
# Console port and speed setting in cmdline is like "console=ttyS0,9600n",
# so we can use pattern 'console=ttyS[0-9]+,[0-9]+' to match it.
# If failed to get the speed and ttyS from cmdline then set them to default: ttyS0 and 9600
if [ -z "$CONSOLE_PORT" ]; then
console_ttys=$(cat /proc/cmdline | grep -Eo 'console=ttyS[0-9]+' | cut -d "=" -f2)
if [ -z "$console_ttys" -o "$console_ttys" = "ttyS0" ]; then
CONSOLE_PORT=0x3f8
CONSOLE_DEV=0
elif [ "$console_ttys" = "ttyS1" ]; then
CONSOLE_PORT=0x2f8
CONSOLE_DEV=1
elif [ "$console_ttys" = "ttyS2" ]; then
CONSOLE_PORT=0x3e8
CONSOLE_DEV=2
elif [ "$console_ttys" = "ttyS3" ]; then
CONSOLE_PORT=0x2e8
CONSOLE_DEV=3
fi
fi
if [ -z "$CONSOLE_SPEED" ]; then
speed=$(cat /proc/cmdline | grep -Eo 'console=ttyS[0-9]+,[0-9]+' | cut -d "," -f2)
if [ -z "$speed" ]; then
CONSOLE_SPEED=9600
else
CONSOLE_SPEED=$speed
fi
fi
create_partition()
{
# Install demo on same block device as ONIE
if [ "$install_env" != "build" ]; then
onie_dev=$(blkid | grep ONIE-BOOT | head -n 1 | awk '{print $1}' | sed -e 's/:.*$//')
blk_dev=$(echo $onie_dev | sed -e 's/[1-9][0-9]*$//' | sed -e 's/\([0-9]\)\(p\)/\1/')
# check if we have an nvme device
blk_suffix=
echo $blk_dev | grep -q nvme0 && blk_suffix="p"
# Note: ONIE has no mount setting for / with device node, so below will be empty string
cur_part=$(cat /proc/mounts | awk "{ if(\$2==\"/\") print \$1 }" | grep $blk_dev || true)
[ -b "$blk_dev" ] || {
echo "Error: Unable to determine block device of ONIE install"
exit 1
}
fi
# auto-detect whether BIOS or UEFI
if [ -d "/sys/firmware/efi/efivars" ] ; then
firmware="uefi"
else
firmware="bios"
fi
if [ "$install_env" = "onie" ]; then
# determine ONIE partition type
onie_partition_type=$(${onie_bin} onie-sysinfo -t)
# demo partition size in MB
if [ "$firmware" = "uefi" ] ; then
create_demo_uefi_partition $blk_dev
elif [ "$onie_partition_type" = "gpt" ] ; then
create_demo_gpt_partition $blk_dev
elif [ "$onie_partition_type" = "msdos" ] ; then
create_demo_msdos_partition $blk_dev
else
echo "ERROR: Unsupported partition type: $onie_partition_type"
exit 1
fi
fi
}
mount_partition()
{
demo_dev=$(echo $blk_dev | sed -e 's/\(mmcblk[0-9]\)/\1p/')$demo_part
echo $blk_dev | grep -q nvme0 && demo_dev=$(echo $blk_dev | sed -e 's/\(nvme[0-9]n[0-9]\)/\1p/')$demo_part
# Make filesystem
mkfs.ext4 -L $demo_volume_label $demo_dev
# Mount demo filesystem
demo_mnt=$(${onie_bin} mktemp -d) || {
echo "Error: Unable to create file system mount point"
exit 1
}
trap_push "${onie_bin} fuser -km $demo_mnt || ${onie_bin} umount $demo_mnt || ${onie_bin} rmdir $demo_mnt || true"
${onie_bin} mount -t ext4 -o defaults,rw $demo_dev $demo_mnt || {
echo "Error: Unable to mount $demo_dev on $demo_mnt"
exit 1
}
}
# Creates a new partition for the DEMO OS.
#
# arg $1 -- base block device
#
# Returns the created partition number in $demo_part
demo_part=""
# TODO: remove reference to "ACS-OS" after all baseimages are upgraded
legacy_volume_label="ACS-OS"
create_demo_gpt_partition()
{
blk_dev="$1"
# Create a temp fifo and store string in variable
tmpfifo=$(mktemp -u)
trap_push "rm $tmpfifo || true"
mkfifo -m 600 "$tmpfifo"
# See if demo partition already exists
demo_part=$(sgdisk -p $blk_dev | grep -e "$demo_volume_label" -e "$legacy_volume_label" | awk '{print $1}')
if [ -n "$demo_part" ] ; then
# delete existing partitions
# if there are multiple partitions matched, we should delete each one, except the current OS's
# Note: You can use any character as a separator for sed, not just '/'
echo "$demo_part" > $tmpfifo &
while read -r part_index; do
if [ "$blk_dev$part_index" = "$cur_part" ]; then continue; fi
echo "deleting partition $part_index ..."
# if the partition is already mounted, umount first
df $blk_dev$part_index 2>/dev/null && {
umount $blk_dev$part_index || {
echo "Error: Unable to umount $blk_dev$part_index"
exit 1
}
}
sgdisk -d $part_index $blk_dev || {
echo "Error: Unable to delete partition $part_index on $blk_dev"
exit 1
}
partprobe || {
echo "Error: Unable to partprobe"
exit 1
}
done < $tmpfifo
fi
# ASSUME: there are no more than 99999 partitions in a block device
all_part=$(sgdisk -p $blk_dev | awk "{if (\$1 > 0 && \$1 <= 99999) print \$1}")
# Get the index of last partition
# Note: the double quotation marks for echo argument are necessary, otherwise the unquoted version replaces each sequence of
# one or more blanks, tabs and newlines with a single space.
# Ref: http://stackoverflow.com/questions/613572/capturing-multiple-line-output-to-a-bash-variable
last_part=$(echo "$all_part" | tail -n 1 | awk '{print $1}')
# Find next available partition
demo_part=1
echo "$all_part" > $tmpfifo &
# Find the first available partition number
while read -r used_part; do
echo "Partition #$used_part is in use."
if [ "$used_part" -ne "$demo_part" ]; then break; fi
demo_part=`expr $demo_part + 1`
done < $tmpfifo
echo "Partition #$demo_part is available"
# Create new partition
echo "Creating new $demo_volume_label partition ${blk_dev}${blk_suffix}$demo_part ..."
if [ "$demo_type" = "DIAG" ] ; then
# set the GPT 'system partition' attribute bit for the DIAG
# partition.
attr_bitmask="0x1"
else
attr_bitmask="0x0"
fi
sgdisk --new=${demo_part}::+${demo_part_size}MB \
--attributes=${demo_part}:=:$attr_bitmask \
--change-name=${demo_part}:$demo_volume_label $blk_dev \
|| {
echo "Warning: The first trial of creating partition failed, trying the largest aligned available block of sectors on the disk"
begin=$(sgdisk -F $blk_dev)
end=$(sgdisk -E $blk_dev)
sgdisk --new=${demo_part}:$begin:$end \
--attributes=${demo_part}:=:$attr_bitmask \
--change-name=${demo_part}:$demo_volume_label $blk_dev
} || {
echo "Error: Unable to create partition $demo_part on $blk_dev"
exit 1
}
## If running in normal Linux, partprobe will complain as below and return non-zero
## Error: Partition(s) 4 on /dev/sda have been written, but we have been unable to inform the kernel of the change,
## probably because it/they are in use. As a result, the old partition(s) will remain in use. You should reboot now
## before making further changes.
partprobe || true
}
create_demo_msdos_partition()
{
blk_dev="$1"
# See if demo partition already exists -- look for the filesystem
# label.
part_info="$(blkid | grep -e "$demo_volume_label" -e "$legacy_volume_label" | awk -F: '{print $1}')"
if [ -n "$part_info" ] ; then
# delete existing partition
demo_part="$(echo -n $part_info | sed -e s#${blk_dev}##)"
parted -s $blk_dev rm $demo_part || {
echo "Error: Unable to delete partition $demo_part on $blk_dev"
exit 1
}
partprobe
fi
# Find next available partition
last_part_info="$(parted -s -m $blk_dev unit s print | tail -n 1)"
last_part_num="$(echo -n $last_part_info | awk -F: '{print $1}')"
last_part_end="$(echo -n $last_part_info | awk -F: '{print $3}')"
# Remove trailing 's'
last_part_end=${last_part_end%s}
demo_part=$(( $last_part_num + 1 ))
demo_part_start=$(( $last_part_end + 1 ))
# sectors_per_mb = (1024 * 1024) / 512 = 2048
sectors_per_mb=2048
demo_part_end=$(( $demo_part_start + ( $demo_part_size * $sectors_per_mb ) - 1 ))
# Create new partition
echo "Creating new partition ${blk_dev}$demo_part ..."
parted -s --align optimal $blk_dev unit s \
mkpart primary $demo_part_start $demo_part_end set $demo_part boot on || {
echo "ERROR: Problems creating msdos partition $demo_part on: $blk_dev"
exit 1
}
partprobe
}
# For UEFI systems, create a new partition for the DEMO OS.
#
# arg $1 -- base block device
#
# Returns the created partition number in $demo_part
create_demo_uefi_partition()
{
create_demo_gpt_partition "$1"
# erase any related EFI BootOrder variables from NVRAM.
for b in $(efibootmgr | grep -e "$demo_volume_label" -e "$legacy_volume_label" | awk '{ print $1 }') ; do
local num=${b#Boot}
# Remove trailing '*'
num=${num%\*}
efibootmgr -b $num -B > /dev/null 2>&1
done
}
# Install legacy BIOS GRUB for DEMO OS
demo_install_grub()
{
local demo_mnt="$1"
local blk_dev="$2"
# Pretend we are a major distro and install GRUB into the MBR of
# $blk_dev.
grub-install --boot-directory="$onie_initrd_tmp/$demo_mnt" --recheck "$blk_dev" || {
echo "ERROR: grub-install failed on: $blk_dev"
exit 1
}
if [ "$demo_type" = "DIAG" ] ; then
# Install GRUB in the partition also. This allows for
# chainloading the DIAG image from another OS.
#
# We are installing GRUB in a partition, as opposed to the
# MBR. With this method block lists are used to refer to the
# the core.img file. The sector locations of core.img may
# change whenever the file system in the partition is being
# altered (files copied, deleted etc.). For more info, see
# https://bugzilla.redhat.com/show_bug.cgi?id=728742 and
# https://bugzilla.redhat.com/show_bug.cgi?id=730915.
#
# The workaround for this is to set the immutable flag on
# /boot/grub/i386-pc/core.img using the chattr command so that
# the sector locations of the core.img file in the disk is not
# altered. The immutable flag on /boot/grub/i386-pc/core.img
# needs to be set only if GRUB is installed to a partition
# boot sector or a partitionless disk, not in case of
# installation to MBR.
core_img="$demo_mnt/grub/i386-pc/core.img"
# remove immutable flag if file exists during the update.
[ -f "$core_img" ] && chattr -i $core_img
grub_install_log=$(mktemp)
grub-install --force --boot-directory="$onie_initrd_tmp/$demo_mnt" \
--recheck "$demo_dev" > /$grub_install_log 2>&1 || {
echo "ERROR: grub-install failed on: $demo_dev"
cat $grub_install_log && rm -f $grub_install_log
exit 1
}
rm -f $grub_install_log
# restore immutable flag on the core.img file as discussed
# above.
[ -f "$core_img" ] && chattr +i $core_img
fi
}
# Install UEFI BIOS GRUB for DEMO OS
demo_install_uefi_grub()
{
local demo_mnt="$1"
local blk_dev="$2"
# make sure /boot/efi is mounted
if ! mount | grep -q "/boot/efi"; then
mount /boot/efi
fi
# Look for the EFI system partition UUID on the same block device as
# the ONIE-BOOT partition.
local uefi_part=0
for p in $(seq 8) ; do
if sgdisk -i $p $blk_dev | grep -q C12A7328-F81F-11D2-BA4B-00A0C93EC93B ; then
uefi_part=$p
break
fi
done
[ $uefi_part -eq 0 ] && {
echo "ERROR: Unable to determine UEFI system partition"
exit 1
}
grub_install_log=$(mktemp)
grub-install \
--no-nvram \
--bootloader-id="$demo_volume_label" \
--efi-directory="/boot/efi" \
--boot-directory="$demo_mnt" \
--recheck \
"$blk_dev" > /$grub_install_log 2>&1 || {
echo "ERROR: grub-install failed on: $blk_dev"
cat $grub_install_log && rm -f $grub_install_log
exit 1
}
rm -f $grub_install_log
# Configure EFI NVRAM Boot variables. --create also sets the
# new boot number as active.
grub=$(find /boot/efi/EFI/$demo_volume_label/ -name grub*.efi -exec basename {} \;)
efibootmgr --quiet --create \
--label "$demo_volume_label" \
--disk $blk_dev --part $uefi_part \
--loader "/EFI/$demo_volume_label/$grub" || {
echo "ERROR: efibootmgr failed to create new boot variable on: $blk_dev"
exit 1
}
}
# Install UEFI BIOS SHIM for DEMO OS
demo_install_uefi_shim()
{
echo "demo_install_uefi_shim(): Installing Secure Boot components"
local demo_mnt="$1"
local blk_dev="$2"
# make sure /boot/efi is mounted
if ! mount | grep -q "/boot/efi"; then
mount /boot/efi || {
echo "Error: Unable to mount /boot/efi"
exit 1
}
fi
# Look for the EFI system partition UUID on the same block device as
# the ONIE-BOOT partition.
local uefi_part=0
for p in $(seq 8) ; do
if sgdisk -i $p $blk_dev | grep -q C12A7328-F81F-11D2-BA4B-00A0C93EC93B ; then
uefi_part=$p
break
fi
done
[ $uefi_part -eq 0 ] && {
echo "ERROR: Unable to determine UEFI system partition"
exit 1
}
echo "creating demo_volume_label=$demo_volume_label in dir: /boot/efi/EFI/ ."
mkdir -p /boot/efi/EFI/$demo_volume_label
if [ ! -f $demo_mnt/$image_dir/boot/mmx64.efi ]; then
echo "ERROR: $demo_mnt/$image_dir/boot/mmx64.efi file does not exist"
exit 1
fi
if [ ! -f $demo_mnt/$image_dir/boot/shimx64.efi ]; then
echo "ERROR: $demo_mnt/$image_dir/boot/shimx64.efi file does not exist"
exit 1
fi
if [ ! -f $demo_mnt/$image_dir/boot/grubx64.efi ]; then
echo "ERROR: $demo_mnt/$image_dir/boot/grubx64.efi file does not exist"
exit 1
fi
echo "copying signed shim, mm, grub, grub.cfg from $demo_mnt/$image_dir/boot/ to /boot/efi/EFI/$demo_volume_label directory"
cp $demo_mnt/$image_dir/boot/mmx64.efi /boot/efi/EFI/$demo_volume_label/mmx64.efi
cp $demo_mnt/$image_dir/boot/shimx64.efi /boot/efi/EFI/$demo_volume_label/shimx64.efi
cp $demo_mnt/$image_dir/boot/grubx64.efi /boot/efi/EFI/$demo_volume_label/grubx64.efi
# Configure EFI NVRAM Boot variables. --create also sets the
# new boot number as active.
efibootmgr --quiet --create \
--label "$demo_volume_label" \
--disk $blk_dev --part $uefi_part \
--loader "/EFI/$demo_volume_label/shimx64.efi" || {
echo "ERROR: efibootmgr failed to create new boot variable on: $blk_dev"
exit 1
}
echo "demo_install_uefi_shim(): Secure Boot components installed successfully"
}
bootloader_menu_config()
{
if [ "$install_env" = "onie" ]; then
# Store installation log in target file system
rm -f $onie_initrd_tmp/tmp/onie-support*.tar.bz2
${onie_bin} onie-support /tmp
mv $onie_initrd_tmp/tmp/onie-support*.tar.bz2 $demo_mnt/$image_dir/
echo "firmware=$firmware"
if [ "$firmware" = "uefi" ] ; then
secure_boot_state=0
reg_sb_guid=""
ENABLED=1
echo "checking secure boot state"
reg_sb_guid=$(efivar -l | grep "SecureBoot$") || echo "Secure Boot GUID not found in efivar list"
echo "Secure Boot GUID=$reg_sb_guid"
if [ -n "$reg_sb_guid" ]; then
secure_boot_state=$(efivar -d --name $reg_sb_guid) || echo "Could not read Secure Boot state from efivar"
fi
echo secure_boot_state=$secure_boot_state
if expr "$secure_boot_state" : '[[:digit:]]\{1,\}' >/dev/null && [ "$secure_boot_state" -eq "$ENABLED" ]; then
echo "UEFI Secure Boot is enabled - Installing shim bootloader"
demo_install_uefi_shim "$demo_mnt" "$blk_dev"
else
echo "UEFI Secure Boot is disabled - Installing regular grub bootloader"
demo_install_uefi_grub "$demo_mnt" "$blk_dev"
fi
else
demo_install_grub "$demo_mnt" "$blk_dev"
fi
fi
# Create a minimal grub.cfg that allows for:
# - configure the serial console
# - allows for grub-reboot to work
# - a menu entry for the DEMO OS
# - menu entries for ONIE
grub_cfg=$(mktemp)
trap_push "rm $grub_cfg || true"
# Set a few GRUB_xxx environment variables that will be picked up and
# used by the 50_onie_grub script. This is similiar to what an OS
# would specify in /etc/default/grub.
#
# GRUB_SERIAL_COMMAND
# GRUB_CMDLINE_LINUX
[ -r ./platform.conf ] && . ./platform.conf
# Check if the CPU vendor is 'Intel' and disable c-states if True
CPUVENDOR="$(cat /proc/cpuinfo | grep -m 1 vendor_id | awk '{print $3}')"
echo "Switch CPU vendor is: $CPUVENDOR"
if echo "$CPUVENDOR" | grep -i 'Intel' >/dev/null 2>&1; then
echo "Switch CPU cstates are: disabled"
CSTATES="processor.max_cstate=1 intel_idle.max_cstate=0"
else
CSTATES=""
fi
DEFAULT_GRUB_SERIAL_COMMAND="serial --port=${CONSOLE_PORT} --speed=${CONSOLE_SPEED} --word=8 --parity=no --stop=1"
DEFAULT_GRUB_CMDLINE_LINUX="console=tty0 console=ttyS${CONSOLE_DEV},${CONSOLE_SPEED}n8 quiet $CSTATES"
GRUB_SERIAL_COMMAND=${GRUB_SERIAL_COMMAND:-"$DEFAULT_GRUB_SERIAL_COMMAND"}
GRUB_CMDLINE_LINUX=${GRUB_CMDLINE_LINUX:-"$DEFAULT_GRUB_CMDLINE_LINUX"}
export GRUB_SERIAL_COMMAND
export GRUB_CMDLINE_LINUX
# Add common configuration, like the timeout and serial console.
cat <<EOF > $grub_cfg
$GRUB_SERIAL_COMMAND
terminal_input console serial
terminal_output console serial
set timeout=5
EOF
# Add the logic to support grub-reboot and grub-set-default
cat <<EOF >> $grub_cfg
if [ -s \$prefix/grubenv ]; then
load_env
fi
if [ "\${saved_entry}" ]; then
set default="\${saved_entry}"
fi
if [ "\${next_entry}" ]; then
set default="\${next_entry}"
unset next_entry
save_env next_entry
fi
if [ "\${onie_entry}" ]; then
set next_entry="\${default}"
set default="\${onie_entry}"
unset onie_entry
save_env onie_entry next_entry
fi
EOF
if [ "$demo_type" = "DIAG" ] ; then
# Make sure ONIE install mode is the default boot mode for the
# diag partition.
cat <<EOF >> $grub_cfg
set default=ONIE
EOF
$onie_root_dir/tools/bin/onie-boot-mode -q -o install
fi
# Add a menu entry for the SONiC OS
# Note: assume that apparmor is supported in the kernel
demo_grub_entry="$demo_volume_revision_label"
if [ "$install_env" = "sonic" ]; then
old_sonic_menuentry=$(cat /host/grub/grub.cfg | sed "/^menuentry '${demo_volume_label}-${running_sonic_revision}'/,/}/!d")
grub_cfg_root=$(echo $old_sonic_menuentry | sed -e "s/.*root\=\(.*\)rw.*/\1/")
onie_menuentry=$(cat /host/grub/grub.cfg | sed "/menuentry ONIE/,/}/!d")
elif [ "$install_env" = "build" ]; then
grub_cfg_root=%%SONIC_ROOT%%
else # install_env = "onie"
uuid=$(blkid "$demo_dev" | sed -ne 's/.* UUID=\"\([^"]*\)\".*/\1/p')
if [ -z "$uuid" ]; then
grub_cfg_root=$demo_dev
else
grub_cfg_root=UUID=$uuid
fi
fi
# Make a first grub config file that located in default debian path:/boot/efi/EFI/debian/
# this first grub.cfg will call the complete grub.cfg created below with sonic configuration
tmp_config=$(mktemp)
cat <<EOF > $tmp_config
search --no-floppy --label --set=root $demo_volume_label
set prefix=(\$root)'/grub'
configfile \$prefix/grub.cfg
EOF
# Copy first grub.cfg as entrypoint to default debian path where grubx64.efi expected it.
mkdir -p /boot/efi/EFI/debian/
echo "cp $tmp_config /boot/efi/EFI/debian/grub.cfg"
cp $tmp_config /boot/efi/EFI/debian/grub.cfg
# Add extra linux command line
echo "EXTRA_CMDLINE_LINUX=$extra_cmdline_linux"
GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX $extra_cmdline_linux"
GRUB_CFG_LINUX_CMD=""
GRUB_CFG_INITRD_CMD=""
if [ "$firmware" = "uefi" ] && expr "$secure_boot_state" : '[[:digit:]]\{1,\}' >/dev/null && [ "$secure_boot_state" -eq "$ENABLED" ]; then
# grub.cfg when BIOS is UEFI and support Secure Boot
GRUB_CFG_LINUX_CMD="linuxefi"
GRUB_CFG_INITRD_CMD="initrdefi"
else
# grub.cfg when BIOS is Legacy
GRUB_CFG_LINUX_CMD="linux"
GRUB_CFG_INITRD_CMD="initrd"
fi
cat <<EOF >> $grub_cfg
menuentry '$demo_grub_entry' {
search --no-floppy --label --set=root $demo_volume_label
echo 'Loading $demo_volume_label $demo_type kernel ...'
insmod gzio
if [ x$grub_platform = xxen ]; then insmod xzio; insmod lzopio; fi
insmod part_msdos
insmod ext2
$GRUB_CFG_LINUX_CMD /$image_dir/boot/vmlinuz-5.10.0-18-2-amd64 root=$grub_cfg_root rw $GRUB_CMDLINE_LINUX \
net.ifnames=0 biosdevname=0 \
loop=$image_dir/$FILESYSTEM_SQUASHFS loopfstype=squashfs \
systemd.unified_cgroup_hierarchy=0 \
apparmor=1 security=apparmor varlog_size=$VAR_LOG_SIZE usbcore.autosuspend=-1 $ONIE_PLATFORM_EXTRA_CMDLINE_LINUX
echo 'Loading $demo_volume_label $demo_type initial ramdisk ...'
$GRUB_CFG_INITRD_CMD /$image_dir/boot/initrd.img-5.10.0-18-2-amd64
}
EOF
if [ "$install_env" = "onie" ]; then
# Add menu entries for ONIE -- use the grub fragment provided by the
# ONIE distribution.
$onie_root_dir/grub.d/50_onie_grub >> $grub_cfg
mkdir -p $onie_initrd_tmp/$demo_mnt/grub
else
cat <<EOF >> $grub_cfg
$old_sonic_menuentry
$onie_menuentry
EOF
fi
if [ "$install_env" = "build" ]; then
cp $grub_cfg $demo_mnt/grub.cfg
umount $demo_mnt
else
cp $grub_cfg $onie_initrd_tmp/$demo_mnt/grub/grub.cfg
fi
cd /
echo "Installed SONiC base image $demo_volume_label successfully"
}