Simple QGA log script

gistfile1.txt

#!/bin/bash

# Define the directory where logs will be stored
LOG_DIR="/var/log/qemu-agent-hooks"

# Get the type of event (freeze or thaw) passed as the first argument
EVENT_TYPE="$1"

# --- Script Logic ---

# 1. Ensure the log directory exists
mkdir -p "$LOG_DIR"

# 2. Log based on the event type
case "$EVENT_TYPE" in
    freeze)
        echo "$(date '+%Y-%m-%d %H:%M:%S') - QEMU Agent: FREEZE event triggered." | tee -a "$LOG_DIR/pre_freeze_$(date +%Y%m%d_%H%M%S).txt" > /dev/null
        echo "This is where you would put commands to quiesce your application (e.g., flush DB buffers)." | tee -a "$LOG_DIR/pre_freeze_$(date +%Y%m%d_%H%M%S).txt" > /dev/null
        ;;
    thaw)
        echo "$(date '+%Y-%m-%d %H:%M:%S') - QEMU Agent: THAW event triggered." | tee -a "$LOG_DIR/post_thaw_$(date +%Y%m%d_%H%M%S).txt" > /dev/null
        echo "This is where you would put commands to unquiesce your application (e.g., release DB locks)." | tee -a "$LOG_DIR/post_thaw_$(date +%Y%m%d_%H%M%S).txt" > /dev/null
        ;;
    *)
        # Handle unexpected arguments (shouldn't happen with normal qemu-agent calls)
        echo "$(date '+%Y-%m-%d %H:%M:%S') - QEMU Agent: Unknown event type '$EVENT_TYPE'." | tee -a "$LOG_DIR/error_log.txt" > /dev/null
        exit 1 # Indicate an error if an unknown event type is received
        ;;
esac

# Exit successfully
exit 0