Girish Ramakrishnan
63 lines
2.1 KiB
Bash
Executable File
63 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
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set -eu -o pipefail
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readonly APPS_SWAP_FILE="/apps.swap"
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readonly BACKUP_SWAP_FILE="/backup.swap" # used when doing app backups
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readonly USER_HOME_FILE="/root/user_home.img"
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readonly DOCKER_DATA_FILE="/root/docker_data.img"
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# Allocate two sets of swap files - one for general app usage and another for backup
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# The backup swap is setup for swap on the fly by the backup scripts
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if [[ ! -f "${APPS_SWAP_FILE}" ]]; then
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physical_memory=$(free -m | awk '/Mem:/ { print $2 }')
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echo "Creating Apps swap file of size ${physical_memory}m"
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fallocate -l "${physical_memory}m" "${APPS_SWAP_FILE}"
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chmod 600 "${APPS_SWAP_FILE}"
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mkswap "${APPS_SWAP_FILE}"
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swapon "${APPS_SWAP_FILE}"
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echo "${APPS_SWAP_FILE} none swap sw 0 0" >> /etc/fstab
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else
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echo "Apps Swap file already exists"
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fi
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if [[ ! -f "${BACKUP_SWAP_FILE}" ]]; then
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echo "Creating Backup swap file"
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fallocate -l 1024m "${BACKUP_SWAP_FILE}"
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chmod 600 "${BACKUP_SWAP_FILE}"
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mkswap "${BACKUP_SWAP_FILE}"
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else
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echo "Backups Swap file already exists"
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fi
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if [[ ! -f "${USER_HOME_FILE}" ]]; then
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echo "Seting up btrfs user home"
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disk_size=$(fdisk -l /dev/vda1 | grep 'Disk /dev/vda1' | awk '{ print $3 }')
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# create a separate 12GB fs for data
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truncate -s 12G "${USER_HOME_FILE}"
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mkfs.btrfs -L UserHome "${USER_HOME_FILE}"
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echo "${USER_HOME_FILE} ${USER_HOME} btrfs loop,nosuid 0 0" >> /etc/fstab
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mount "${USER_HOME_FILE}"
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btrfs subvolume create "${USER_HOME}/data"
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else
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echo "Home is already btrfs"
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fi
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if [ ! -f "${DOCKER_DATA_FILE}" ]; then
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echo "Settings up btrfs docker"
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if aufs_mounts=$(grep 'aufs' /proc/mounts | awk '{ print $2 }' | sort -r); then
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umount -l "${aufs_mounts}"
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fi
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rm -rf /var/lib/docker
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mkdir /var/lib/docker
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# create a separate 12GB fs for docker images
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truncate -s 12G "${DOCKER_DATA_FILE}"
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mkfs.btrfs -L DockerData "${DOCKER_DATA_FILE}"
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echo "${DOCKER_DATA_FILE} /var/lib/docker btrfs loop,nosuid 0 0" >> /etc/fstab
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echo 'DOCKER_OPTS="-s btrfs"' >> /etc/default/docker
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mount "${DOCKER_DATA_FILE}"
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else
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echo "Docker is already btrfs"
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fi
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