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Code Issues Releases Wiki Activity

Use dd to create swapfile. Check if root fs is btrfs. Display message if swap wasn't allocated

This commit is contained in:
Michael Kroes 2016-03-16 09:06:17 +01:00
parent 1be652b72f
commit dfe1374901
1 changed files with 13 additions and 6 deletions
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19
setup/system.sh
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@ -18,6 +18,8 @@ source setup/functions.sh # load our functions
# - Check if swap is currently mountend by looking at /proc/mounts # - Check if swap is currently mountend by looking at /proc/mounts
# - Check if the user intents to activate swap on next boot by checking fstab entries. # - Check if the user intents to activate swap on next boot by checking fstab entries.
# - Check if a swapfile already exists # - Check if a swapfile already exists
# - Check if the root file system is not btrfs, might be an incompatible version with
# swapfiles. User should hanle it them selves.
# - Check the memory requirements # - Check the memory requirements
# - Check available diskspace # - Check available diskspace
@ -26,27 +28,32 @@ source setup/functions.sh # load our functions
SWAP_MOUNTED=$(grep "swap" /proc/mounts) SWAP_MOUNTED=$(grep "swap" /proc/mounts)
SWAP_IN_FSTAB=$(grep "swap" /etc/fstab) SWAP_IN_FSTAB=$(grep "swap" /etc/fstab)
ROOT_IS_BTRFS=$(grep "\/ .*btrfs" /proc/mounts)
TOTAL_PHYSICAL_MEM=$(head -n 1 /proc/meminfo | awk '{print $2}') TOTAL_PHYSICAL_MEM=$(head -n 1 /proc/meminfo | awk '{print $2}')
AVAILABLE_DISK_SPACE=$(df / --output=avail | tail -n 1) AVAILABLE_DISK_SPACE=$(df / --output=avail | tail -n 1)
if if
[ -z "$SWAP_MOUNTED" ] && [ -z "$SWAP_MOUNTED" ] &&
[ -z "$SWAP_IN_FSTAB" ] && [ -z "$SWAP_IN_FSTAB" ] &&
[ ! -e /swapfile ] && [ ! -e /swapfile ] &&
[ -z "$ROOT_IS_BTRFS" ] &&
[ $TOTAL_PHYSICAL_MEM -lt 1900000 ] && [ $TOTAL_PHYSICAL_MEM -lt 1900000 ] &&
[ $AVAILABLE_DISK_SPACE -gt 5242880 ] [ $AVAILABLE_DISK_SPACE -gt 5242880 ]
then then
echo "Adding swap to the system..." echo "Adding swap to the system..."
# Allocate and activate the swap file # Allocate and activate the swap file
fallocate -l 1G /swapfile dd if=/dev/zero of=/swapfile bs=1024 count=$[1024*1024] status=none
chmod 600 /swapfile if [ -e /swapfile ]; then
hide_output mkswap /swapfile chmod 600 /swapfile
swapon /swapfile hide_output mkswap /swapfile
swapon /swapfile
fi
# Check if swap is mounted then activate on boot # Check if swap is mounted then activate on boot
ACTIVATED_SWAP=$(swapon -s | grep "\/swapfile") if [ -n "$(swapon -s | grep "\/swapfile")" ]; then
if [ -n "$ACTIVATED_SWAP" ]; then
echo "/swapfile none swap sw 0 0" >> /etc/fstab echo "/swapfile none swap sw 0 0" >> /etc/fstab
else
echo "ERROR: Swap allocation failed"
fi fi
fi fi