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Merge pull request #1319 from RaspAP/feat/minwrite
Adds minimal SD card write support to installer
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| #!/bin/bash | ||
| # | ||
| # RaspAP minimal microSD card write operation | ||
| # Original author: @zbchristian | ||
| # Original source URI: /~https://github.com/RaspAP/raspap-tools | ||
| # Modified by: @billz <billzimmerman@gmail.com> | ||
| # License: GNU General Public License v3.0 | ||
| # License URI: /~https://github.com/raspap/raspap-webgui/blob/master/LICENSE | ||
| # | ||
| # Limits microSD card write operation to a minimum by moving temporary and log files to RAM. | ||
| # Several packages are removed and the default logging service is replaced. | ||
| # The file system is still in read/write mode, so RaspAP settings can be saved. | ||
| # Write access can be checked with "iotop -aoP". | ||
| # Remaining access originates mainly from the ext4 journal update (process jbd2). | ||
|
|
||
| # Exit on error | ||
| set -o errexit | ||
| # Exit on error inside functions | ||
| set -o errtrace | ||
|
|
||
| # Set defaults | ||
| readonly bootcmd="/boot/cmdline.txt" | ||
|
|
||
| function _install_minwrite() { | ||
| _display_welcome | ||
| _begin_install | ||
| _remove_packages | ||
| _disable_services | ||
| _install_logger | ||
| _disable_swap | ||
| _move_directories | ||
| _install_complete | ||
| } | ||
|
|
||
| function _dirs2tmpfs() { | ||
| for dir in "${dirs[@]}"; do | ||
| echo "Moving $dir to RAM" | ||
| if ! grep -q " $dir " /etc/fstab; then | ||
| echo "tmpfs $dir tmpfs nosuid,nodev 0 0" | sudo tee -a /etc/fstab | ||
| fi | ||
| done | ||
| } | ||
|
|
||
| # Determines host Linux distribution details | ||
| function _get_linux_distro() { | ||
| if type lsb_release >/dev/null 2>&1; then # linuxbase.org | ||
| OS=$(lsb_release -si) | ||
| RELEASE=$(lsb_release -sr) | ||
| CODENAME=$(lsb_release -sc) | ||
| DESC=$(lsb_release -sd) | ||
| elif [ -f /etc/os-release ]; then # freedesktop.org | ||
| . /etc/os-release | ||
| OS=$ID | ||
| RELEASE=$VERSION_ID | ||
| CODENAME=$VERSION_CODENAME | ||
| DESC=$PRETTY_NAME | ||
| else | ||
| _install_status 1 "Unsupported Linux distribution" | ||
| fi | ||
| } | ||
|
|
||
| function _begin_install() { | ||
| _install_log "Modify the OS to minimize microSD card write operation" | ||
| _get_linux_distro | ||
| echo "Detected OS: ${DESC}" | ||
| } | ||
|
|
||
| function _remove_packages() { | ||
| _install_log "Removing packages" | ||
| echo -e "The following packages will be removed: ${ANSI_YELLOW}dphys-swapfile logrotate${ANSI_RESET}" | ||
| echo -n "Proceed? [Y/n]: " | ||
| if [ "$assume_yes" == 0 ]; then | ||
| read answer < /dev/tty | ||
| if [ "$answer" != "${answer#[Nn]}" ]; then | ||
| _install_status 0 "(Skipped)" | ||
| else | ||
| sudo apt-get -y remove --purge dphys-swapfile logrotate || _install_status 1 "Unable to remove packages" | ||
| sudo apt-get -y autoremove --purge || _install_status 1 "Unable to autoremove packages" | ||
| _install_status 0 | ||
| fi | ||
| else | ||
| echo "(Skipped)" | ||
| fi | ||
| } | ||
|
|
||
| function _disable_services() { | ||
| _install_log "Disabling services" | ||
| echo -e "The following services will be disabled: ${ANSI_YELLOW}bootlogd.service bootlogs console-setup apt-daily${ANSI_RESET}" | ||
| echo -n "Proceed? [Y/n]: " | ||
| if [ "$assume_yes" == 0 ]; then | ||
| read answer < /dev/tty | ||
| if [ "$answer" != "${answer#[Nn]}" ]; then | ||
| _install_status 0 "(Skipped)" | ||
| else | ||
| sudo systemctl unmask bootlogd.service || _install_status 2 "Service bootlogd.service does not exist" | ||
| sudo systemctl disable bootlogs || _install_status 2 "Service bootlogs does not exist" | ||
| sudo systemctl disable apt-daily.service apt-daily.timer apt-daily-upgrade.timer apt-daily-upgrade.service || _install_status 2 "Service apt-daily does not exist" | ||
| _install_status 0 | ||
| fi | ||
| else | ||
| echo "(Skipped)" | ||
| fi | ||
| } | ||
|
|
||
| function _install_logger() { | ||
| _install_log "Installing new logger" | ||
| echo -e "The following new logger will be installed: ${ANSI_YELLOW}busybox-syslogd${ANSI_RESET}" | ||
| echo -n "Proceed? [Y/n]: " | ||
| if [ "$assume_yes" == 0 ]; then | ||
| read answer < /dev/tty | ||
| if [ "$answer" != "${answer#[Nn]}" ]; then | ||
| _install_status 0 "(Skipped)" | ||
| else | ||
| sudo apt-get -y install busybox-syslogd || _install_status 1 "Unable to install busybox-syslogd" | ||
| sudo dpkg --purge rsyslog || _install_status 1 "Unable to purge rsyslog" | ||
| _install_status 0 | ||
| fi | ||
| else | ||
| echo "(Skipped)" | ||
| fi | ||
| } | ||
|
|
||
| function _disable_swap() { | ||
| _install_log "Modifying boot options to disable swap and filesystem check" | ||
| echo "The noswap option will be written to ${bootcmd}" | ||
| echo -n "Proceed? [Y/n]: " | ||
| if [ "$assume_yes" == 0 ]; then | ||
| read answer < /dev/tty | ||
| if [ "$answer" != "${answer#[Nn]}" ]; then | ||
| _install_status 0 "(Skipped)" | ||
| else | ||
| if ! grep -q "noswap" $bootcmd; then | ||
| sudo sed -i '1 s/$/ fsck.mode=skip noswap/' $bootcmd || _install_status 1 "Unable to write to ${bootcmd}" | ||
| echo "Modified ${bootcmd} with noswap option" | ||
| _install_status 0 | ||
| fi | ||
| fi | ||
| else | ||
| echo "(Skipped)" | ||
| fi | ||
| } | ||
|
|
||
| function _move_directories() { | ||
| _install_log "Add tmpfs entries to /etc/fstab" | ||
| # move directories to RAM | ||
| dirs=( "/tmp" "/var/log" "/var/tmp" "/var/lib/misc" "/var/cache") | ||
| # special dirs used by vnstat and php | ||
| dirs+=( "/var/lib/vnstat" "/var/php/sessions" ) | ||
| echo "The following directories will be moved to RAM:" | ||
| echo -e "${ANSI_YELLOW}${dirs[*]}${ANSI_RESET}" | ||
| echo -n "Proceed? [Y/n]: " | ||
| if [ "$assume_yes" == 0 ]; then | ||
| read answer < /dev/tty | ||
| if [ "$answer" != "${answer#[Nn]}" ]; then | ||
| _install_status 0 "(Skipped)" | ||
| else | ||
| _dirs2tmpfs || _install_status 1 "Unable to call dirs2tmpfs" | ||
| _install_status 0 | ||
| fi | ||
| else | ||
| echo "(Skipped)" | ||
| fi | ||
| } | ||
|
|
||
| function _install_complete() { | ||
| _install_log "Installation completed" | ||
| echo -e "${ANSI_RED}The system needs to be rebooted as a final step.${ANSI_RESET}" | ||
| echo -n "Reboot now? [Y/n]: " | ||
| if [ "$assume_yes" == 0 ]; then | ||
| read answer < /dev/tty | ||
| if [ "$answer" != "${answer#[Nn]}" ]; then | ||
| echo "Installation reboot aborted." | ||
| exit 0 | ||
| fi | ||
| echo "Rebooting..." | ||
| sudo reboot || _install_status 1 "Unable to execute reboot" | ||
| fi | ||
| } | ||
|
|
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