From 05c04e3cae2b51ffc2f68dfab9b626b652fa0fce Mon Sep 17 00:00:00 2001
From: Keith Nash <Spearfoot@users.noreply.github.com>
Date: Wed, 15 Mar 2017 16:31:45 -0500
Subject: [PATCH] Original version

---
 zpool_report.sh | 134 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 zpool_report.sh

diff --git a/zpool_report.sh b/zpool_report.sh
new file mode 100644
index 0000000..0062085
--- /dev/null
+++ b/zpool_report.sh
@@ -0,0 +1,134 @@
+#!/usr/bin/env bash
+
+### Parameters ###
+
+# Specify your email address here:
+email=""
+
+freenashost=$(hostname -s)
+logfile="/tmp/zpool_report.tmp"
+subject="ZPool Status Report for ${freenashost^^}"
+pools=$(zpool list -H -o name)
+usedWarn=75
+usedCrit=90
+scrubAgeWarn=30
+warnSymbol="?"
+critSymbol="!"
+
+### Set email headers ###
+(
+  echo "To: ${email}"
+  echo "Subject: ${subject}"
+  echo "Content-Type: text/html"
+  echo "MIME-Version: 1.0"
+  echo -e "\r\n"
+) > ${logfile}
+
+### Set email body ###
+echo "<pre style=\"font-size:14px\">" >> ${logfile}
+
+###### summary ######
+(
+  echo "########## ZPool status report summary for all pools on server ${freenashost^^} ##########"
+  echo ""
+  echo "+--------------+--------+------+------+------+----+--------+------+-----+"
+  echo "|Pool Name     |Status  |Read  |Write |Cksum |Used|Scrub   |Scrub |Last |"
+  echo "|              |        |Errors|Errors|Errors|    |Repaired|Errors|Scrub|"
+  echo "|              |        |      |      |      |    |Bytes   |      |Age  |"
+  echo "+--------------+--------+------+------+------+----+--------+------+-----+"
+) >> ${logfile}
+
+for pool in $pools
+  do
+    status="$(zpool list -H -o health "$pool")"
+    errors="$(zpool status "$pool" | grep -E "(ONLINE|DEGRADED|FAULTED|UNAVAIL|REMOVED)[ \t]+[0-9]+")"
+    readErrors=0
+    for err in $(echo "$errors" | awk '{print $3}')
+      do
+        if echo "$err" | grep -E -q "[^0-9]+"; then
+          readErrors=1000
+          break
+        fi
+        readErrors=$((readErrors + err))
+      done
+    writeErrors=0
+    for err in $(echo "$errors" | awk '{print $4}')
+      do
+        if echo "$err" | grep -E -q "[^0-9]+"; then
+          writeErrors=1000
+          break
+        fi
+        writeErrors=$((writeErrors + err))
+      done
+    cksumErrors=0
+    for err in $(echo "$errors" | awk '{print $5}')
+      do
+        if echo "$err" | grep -E -q "[^0-9]+"; then
+          cksumErrors=1000
+          break
+        fi
+        cksumErrors=$((cksumErrors + err))
+      done
+    if [ "$readErrors" -gt 999 ]; then readErrors=">1K"; fi
+    if [ "$writeErrors" -gt 999 ]; then writeErrors=">1K"; fi
+    if [ "$cksumErrors" -gt 999 ]; then cksumErrors=">1K"; fi
+    used="$(zpool list -H -p -o capacity "$pool")"
+    scrubRepBytes="N/A"
+    scrubErrors="N/A"
+    scrubAge="N/A"
+    if [ "$(zpool status "$pool" | grep "scan" | awk '{print $2}')" = "scrub" ]; then
+      scrubRepBytes="$(zpool status "$pool" | grep "scan" | awk '{print $4}')"
+      scrubErrors="$(zpool status "$pool" | grep "scan" | awk '{print $8}')"
+      scrubDate="$(zpool status "$pool" | grep "scan" | awk '{print $15"-"$12"-"$13"_"$14}')"
+      scrubTS="$(date -j -f "%Y-%b-%e_%H:%M:%S" "$scrubDate" "+%s")"
+      currentTS="$(date "+%s")"
+      scrubAge=$((((currentTS - scrubTS) + 43200) / 86400))
+    fi
+    if [ "$status" = "FAULTED" ] \
+    || [ "$used" -gt "$usedCrit" ] \
+    || ( [ "$scrubErrors" != "N/A" ] && [ "$scrubErrors" != "0" ] )
+    then
+      symbol="$critSymbol"
+    elif [ "$status" != "ONLINE" ] \
+    || [ "$readErrors" != "0" ] \
+    || [ "$writeErrors" != "0" ] \
+    || [ "$cksumErrors" != "0" ] \
+    || [ "$used" -gt "$usedWarn" ] \
+    || [ "$scrubRepBytes" != "0" ] \
+    || [ "$(echo "$scrubAge" | awk '{print int($1)}')" -gt "$scrubAgeWarn" ]
+    then
+      symbol="$warnSymbol"
+    else
+      symbol=" "
+    fi
+    (
+    printf "|%-12s %1s|%-8s|%6s|%6s|%6s|%3s%%|%8s|%6s|%5s|\n" \
+    "$pool" "$symbol" "$status" "$readErrors" "$writeErrors" "$cksumErrors" \
+    "$used" "$scrubRepBytes" "$scrubErrors" "$scrubAge"
+    ) >> ${logfile}
+  done
+
+(
+  echo "+--------------+--------+------+------+------+----+--------+------+-----+"
+) >> ${logfile}
+
+###### for each pool ######
+for pool in $pools
+  do
+    (
+    echo ""
+    echo "########## ZPool status report for ${pool} ##########"
+    echo ""
+    zpool status -v "$pool"
+    ) >> ${logfile}
+  done
+
+echo "</pre>" >> ${logfile}
+
+### Send report ###
+if [ -z "${email}" ]; then
+  echo "No email address specified, information available in ${logfile}"
+else
+  sendmail -t < ${logfile}
+  rm ${logfile}
+fi