92 lines
2.6 KiB
Bash
92 lines
2.6 KiB
Bash
#!/bin/bash
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set -e
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# ----------------------------------------------------------------------------------------------
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# --------------------------- ZFS ARC & Memory Snapshot for Unraid -----------------------------
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# ----------------------------------------------------------------------------------------------
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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source "$SCRIPT_DIR/../Master.conf"
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source "$SCRIPT_DIR/../common.sh"
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parse_args "$@"
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# STATUS MODE
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if [[ "$SHOW_STATUS" == true ]]; then
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echo
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echo "=================================================="
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echo " ℹ️ ZFS + MEMORY SNAPSHOT STATUS"
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echo "--------------------------------------------------"
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echo " 📊 Mode: Read-only diagnostics"
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echo " 🧪 Dry Run: $DRY_RUN"
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echo "=================================================="
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exit 0
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fi
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# HEADER
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echo
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echo "============================================================"
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echo " 📊 ZFS ARC + MEMORY SNAPSHOT"
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echo "------------------------------------------------------------"
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echo " 🕒 Time: $(date)"
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echo " 🧪 Dry Run: $DRY_RUN"
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echo "============================================================"
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log "ℹ️ Collecting ZFS ARC + memory statistics"
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# FUNCTIONS
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show_zfs_arc() {
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echo
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echo "==================== ZFS ARC STATS ===================="
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if [[ ! -r /proc/spl/kstat/zfs/arcstats ]]; then
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warn "🔴 ZFS arcstats not available on this system"
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return
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fi
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grep -iE '^(c|size|hits|misses|arc_meta_used|demand_metadata_misses|mru_ghost_metadata|mfu_ghost_metadata)' \
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/proc/spl/kstat/zfs/arcstats 2>/dev/null || warn "🟡 Unable to read ARC stats"
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}
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show_memory_status() {
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echo
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echo "==================== MEMORY STATUS ===================="
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if command -v free >/dev/null 2>&1; then
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free -h | awk '
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NR==1 {print $0}
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/Mem:/ {print $0}
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/Swap:/ {print $0}'
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else
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warn "🔴 free command not available"
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fi
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}
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# EXECUTION
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START_TIME=$(date +%s)
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if [[ "$DRY_RUN" == true ]]; then
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warn "🧪 Dry run enabled - no system data collected"
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else
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show_zfs_arc
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show_memory_status
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fi
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END_TIME=$(date +%s)
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DURATION=$((END_TIME - START_TIME))
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# SUMMARY
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echo
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echo "============================================================"
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echo " 📊 SNAPSHOT SUMMARY"
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echo "------------------------------------------------------------"
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echo " ⏱ Duration: ${DURATION}s"
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echo " 📡 Mode: READ-ONLY"
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echo " 🧠 Source: ZFS ARC + system memory"
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echo "============================================================"
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info "ℹ️ Snapshot complete" |