Setup installation
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334
scripts/ssd-detection/ssd-safe-eject.sh
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334
scripts/ssd-detection/ssd-safe-eject.sh
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#!/bin/bash
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# ssd-safe-eject.sh - Safe Eject Extension für USB-C SSDs
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# Zweck: Sichere Entfernung von USB-C SSDs mit vollständigem Sync und Hardware-Eject
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set -e
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# Konfiguration
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MOUNT_POINT="/mnt/ssd-storage"
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LOG_FILE="/var/log/ssd-mount.log"
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# Farben für Ausgabe
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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BLUE='\033[0;34m'
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NC='\033[0m' # No Color
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# Logging-Funktion
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log_message() {
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echo "$(date '+%Y-%m-%d %H:%M:%S') - SAFE-EJECT: $1" | sudo tee -a "$LOG_FILE"
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echo -e "${BLUE}[SAFE-EJECT]${NC} $1"
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}
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log_success() {
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echo "$(date '+%Y-%m-%d %H:%M:%S') - SUCCESS: $1" | sudo tee -a "$LOG_FILE"
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echo -e "${GREEN}[✓]${NC} $1"
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}
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log_warning() {
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echo "$(date '+%Y-%m-%d %H:%M:%S') - WARNING: $1" | sudo tee -a "$LOG_FILE"
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echo -e "${YELLOW}[!]${NC} $1"
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}
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log_error() {
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echo "$(date '+%Y-%m-%d %H:%M:%S') - ERROR: $1" | sudo tee -a "$LOG_FILE"
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echo -e "${RED}[✗]${NC} $1"
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}
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# Schritt 1: Pre-Eject Validierung
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validate_pre_eject() {
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log_message "Validiere Pre-Eject Status..."
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if ! mountpoint -q "$MOUNT_POINT"; then
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log_warning "Keine SSD auf $MOUNT_POINT gemountet"
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return 1
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fi
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mounted_device=$(df "$MOUNT_POINT" | tail -1 | awk '{print $1}')
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log_success "Gemountetes Device identifiziert: $mounted_device"
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# Prüfe ob Device USB-Device ist
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device_base=$(echo "$mounted_device" | sed 's/[0-9]*$//')
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if lsblk -o TRAN "$device_base" 2>/dev/null | grep -q usb; then
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log_success "USB-Device bestätigt: $device_base"
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echo "$mounted_device"
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return 0
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else
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log_error "Device ist kein USB-Device - Safe-Eject nicht anwendbar"
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return 1
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fi
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}
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# Schritt 2: Aktive Prozesse prüfen
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check_active_processes() {
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local device="$1"
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log_message "Prüfe aktive Prozesse auf $MOUNT_POINT..."
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# Prozesse finden die das Mount-Point verwenden
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active_processes=$(lsof "$MOUNT_POINT" 2>/dev/null || true)
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if [ -n "$active_processes" ]; then
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log_warning "Aktive Prozesse gefunden:"
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echo "$active_processes"
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echo ""
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echo "Prozesse beenden? (y/n/s für skip)"
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read -r response
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case "$response" in
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"y"|"Y")
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log_message "Beende Prozesse..."
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lsof -t "$MOUNT_POINT" 2>/dev/null | xargs -r sudo kill -TERM
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sleep 2
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# Prüfe erneut
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remaining=$(lsof "$MOUNT_POINT" 2>/dev/null || true)
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if [ -n "$remaining" ]; then
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log_warning "Einige Prozesse laufen noch - Force Kill..."
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lsof -t "$MOUNT_POINT" 2>/dev/null | xargs -r sudo kill -KILL
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fi
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log_success "Prozesse beendet"
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;;
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"s"|"S")
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log_warning "Prozesse werden nicht beendet - Fortfahren auf eigene Gefahr"
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;;
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*)
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log_message "Safe-Eject abgebrochen"
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return 1
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;;
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esac
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else
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log_success "Keine aktiven Prozesse gefunden"
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fi
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return 0
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}
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# Schritt 3: Vollständiger Daten-Sync
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perform_full_sync() {
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log_message "Führe vollständigen Daten-Sync durch..."
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# Globaler Sync
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log_message "Globaler Sync..."
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sync
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# Warte auf Dirty Pages Flush
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log_message "Warte auf Buffer-Flush..."
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local timeout=30
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local count=0
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while [ $count -lt $timeout ]; do
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dirty_pages=$(cat /proc/meminfo | grep "Dirty:" | awk '{print $2}')
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writeback_pages=$(cat /proc/meminfo | grep "Writeback:" | awk '{print $2}')
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if [ "$dirty_pages" -le 4 ] && [ "$writeback_pages" -le 4 ]; then
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log_success "Buffer-Flush abgeschlossen (Dirty: ${dirty_pages}kB, Writeback: ${writeback_pages}kB)"
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break
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fi
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if [ $((count % 5)) -eq 0 ]; then
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log_message "Warte auf Buffer-Flush... (Dirty: ${dirty_pages}kB, Writeback: ${writeback_pages}kB)"
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fi
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sleep 1
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count=$((count + 1))
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done
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if [ $count -ge $timeout ]; then
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log_warning "Buffer-Flush Timeout erreicht - Fortfahren..."
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fi
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# Finaler Sync
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log_message "Finaler Sync..."
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sync
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sleep 2
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log_success "Vollständiger Sync abgeschlossen"
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}
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# Schritt 4: Filesystem Unmount
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perform_unmount() {
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local device="$1"
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log_message "Unmounte Dateisystem: $device"
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# Lazy Unmount falls normal unmount fehlschlägt
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if ! sudo umount "$MOUNT_POINT" 2>/dev/null; then
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log_warning "Normaler Unmount fehlgeschlagen - versuche Lazy Unmount..."
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if sudo umount -l "$MOUNT_POINT" 2>/dev/null; then
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log_success "Lazy Unmount erfolgreich"
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else
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log_error "Unmount fehlgeschlagen"
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return 1
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fi
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else
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log_success "Unmount erfolgreich"
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fi
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# Verifikation
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if mountpoint -q "$MOUNT_POINT"; then
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log_error "Mount-Point noch aktiv nach Unmount"
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return 1
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else
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log_success "Mount-Point erfolgreich getrennt"
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return 0
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fi
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}
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# Schritt 5: Hardware-Eject
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perform_hardware_eject() {
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local device="$1"
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local device_base=$(echo "$device" | sed 's/[0-9]*$//')
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log_message "Hardware-Eject für Device: $device_base"
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# Prüfe ob eject verfügbar ist
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if ! command -v eject >/dev/null; then
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log_warning "eject Befehl nicht verfügbar - installiere eject..."
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sudo apt update && sudo apt install -y eject
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fi
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# Hardware-Eject durchführen
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if sudo eject "$device_base" 2>/dev/null; then
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log_success "Hardware-Eject erfolgreich: $device_base"
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else
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log_warning "Hardware-Eject fehlgeschlagen - möglicherweise nicht unterstützt"
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# Alternative: USB-Device über sysfs deaktivieren
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usb_device=$(udevadm info --query=path --name="$device_base" 2>/dev/null | sed 's|/block/.*||')
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if [ -n "$usb_device" ]; then
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log_message "Versuche USB-Device Deaktivierung über sysfs..."
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if echo 1 | sudo tee "/sys$usb_device/remove" >/dev/null 2>&1; then
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log_success "USB-Device über sysfs deaktiviert"
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else
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log_warning "USB-Device Deaktivierung fehlgeschlagen"
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fi
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fi
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fi
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}
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# Schritt 6: Post-Eject Validierung
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validate_post_eject() {
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local device="$1"
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local device_base=$(echo "$device" | sed 's/[0-9]*$//')
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log_message "Post-Eject Validierung..."
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# Prüfe ob Mount-Point noch aktiv
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if mountpoint -q "$MOUNT_POINT"; then
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log_error "Mount-Point noch aktiv - Safe-Eject unvollständig"
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return 1
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fi
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# Prüfe ob Device noch sichtbar
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sleep 3 # Kurze Wartezeit für System-Update
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if [ -b "$device_base" ]; then
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log_warning "Device noch im System sichtbar: $device_base"
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log_message "Device kann möglicherweise manuell entfernt werden"
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else
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log_success "Device nicht mehr im System sichtbar"
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fi
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log_success "Post-Eject Validierung abgeschlossen"
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return 0
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}
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# Safe-Eject Status anzeigen
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show_eject_status() {
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echo ""
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echo "=== Safe-Eject Status ==="
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if mountpoint -q "$MOUNT_POINT"; then
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mounted_device=$(df "$MOUNT_POINT" | tail -1 | awk '{print $1}')
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device_base=$(echo "$mounted_device" | sed 's/[0-9]*$//')
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echo "✓ Gemountetes Device: $mounted_device"
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echo "✓ Hardware Device: $device_base"
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# USB-Status prüfen
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if lsblk -o TRAN "$device_base" 2>/dev/null | grep -q usb; then
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echo "✓ USB-Device: Ja"
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echo "✓ Safe-Eject: Verfügbar"
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else
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echo "✗ USB-Device: Nein"
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echo "✗ Safe-Eject: Nicht verfügbar"
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fi
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# Aktive Prozesse prüfen
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active_count=$(lsof "$MOUNT_POINT" 2>/dev/null | wc -l)
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if [ "$active_count" -gt 0 ]; then
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echo "! Aktive Prozesse: $active_count"
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else
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echo "✓ Aktive Prozesse: Keine"
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fi
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else
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echo "✗ Kein Device gemountet"
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echo "✗ Safe-Eject: Nicht erforderlich"
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fi
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echo ""
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}
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# Hauptfunktion Safe-Eject
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safe_eject_main() {
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echo "=== USB-C SSD Safe-Eject ==="
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echo "Version: 1.0"
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echo ""
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# Pre-Validierung
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device=$(validate_pre_eject)
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if [ $? -ne 0 ]; then
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return 1
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fi
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echo "=== Safe-Eject Prozess gestartet für: $device ==="
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echo ""
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# Aktive Prozesse prüfen
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if ! check_active_processes "$device"; then
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return 1
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fi
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# Vollständiger Sync
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perform_full_sync
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# Unmount
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if ! perform_unmount "$device"; then
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return 1
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fi
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# Hardware-Eject
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perform_hardware_eject "$device"
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# Post-Validierung
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validate_post_eject "$device"
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echo ""
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echo "=== Safe-Eject abgeschlossen ==="
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echo "USB-C SSD kann jetzt sicher entfernt werden."
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echo ""
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return 0
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}
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# Hauptfunktion
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main() {
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case "${1:-eject}" in
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"eject")
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safe_eject_main
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;;
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"status")
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show_eject_status
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;;
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*)
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echo "Verwendung: $0 {eject|status}"
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echo ""
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echo "Befehle:"
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echo " eject - Sichere SSD-Entfernung durchführen"
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echo " status - Safe-Eject Status anzeigen"
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;;
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esac
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}
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# Script ausführen
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main "$@"
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