From cb520c65eff1035aea6e8f05fe9bffa74311ddac Mon Sep 17 00:00:00 2001
From: Gardouille <gardouille@gmail.com>
Date: Thu, 20 Nov 2014 14:30:29 +0100
Subject: [PATCH] Snapsend:   * Send an email for the daily snapshot with the
 log in content   * Add the hostname in the mail's subject (async and daily)

---
 snapsend.sh | 25 ++++++++++++++++++-------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/snapsend.sh b/snapsend.sh
index f3f7418..e910094 100755
--- a/snapsend.sh
+++ b/snapsend.sh
@@ -13,11 +13,14 @@ DATASETS="datastore/vm"
 
 # Destination host for snapshot replication
 # The user must have enought rights to use `zfs command`
-DHOST="root@192.168.42.52"
+DHOST="root@192.168.0.100"
 
 # Output logfile
 LOGFILE="/var/log/snapsend/snapsend.log"
 
+# Temp file for mail content
+TEMP_MAIL="/var/log/snapsend/temp.mail"
+
 # Tools that help implement snapshot logic (and transfer soon according the pull-requests)
 ZSNAP="/usr/local/bin/zfSnap.sh"
 
@@ -79,6 +82,7 @@ usage()
 if [ ! -f "${LOGFILE}" ]; then
   mkdir -p $(dirname ${LOGFILE})
   touch "${LOGFILE}"
+  touch "${TEMP_MAIL}"
 fi
 
 case "${interval}" in
@@ -105,10 +109,10 @@ case "${interval}" in
         # Send the snapshot the remote host
         # zfs send -I datastore/vm@2014-11-17_11.26.22--1h datastore/vm@2014-11-18_14.19.10--1h | ssh nec02.ipr.univ-rennes1.fr zfs recv datastore/vm
         zfs send -I "${DHOSTSNAP}" "${dset}@${LOCALSNAP}" | ssh "${DHOST}" zfs recv "${dset}"
-        printf ' ... done\n' >> $LOGFILE
+        printf ' ... DONE\n' >> $LOGFILE
       else
         # Mail admin
-        printf 'ERROR snapshot %s does not exist on the local system\n' ${DHOSTSNAP} | mail ${MAILADMIN} -s 'snapsend_error'
+        printf 'ERROR snapshot %s does not exist on the local system\n' ${DHOSTSNAP} | mail ${MAILADMIN} -s "snapsend_error $(hostname -f)"
         printf 'ERROR snapshot %s for %s does not exist on the local system\n' ${DHOSTSNAP} ${dset} >> $LOGFILE
       fi
 
@@ -120,7 +124,7 @@ case "${interval}" in
         zfs rename ${dset}@${DHOSTSNAP} ${dset}@${PREFIXSNAP}${DHOSTSNAP}
       else
         # Mail admin
-        printf 'ERROR snapshot %s for %s does not exist on the remote host (%s)\n' ${LOCALSNAP} ${dset} ${DHOST} | mail ${MAILADMIN} -s 'snapsend_error'
+        printf 'ERROR snapshot %s for %s does not exist on the remote host (%s)\n' ${LOCALSNAP} ${dset} ${DHOST} | mail ${MAILADMIN} -s "snapsend_error $(hostname -f)"
         printf 'ERROR snapshot %s for %s does not exist on the remote host (%s)\n' ${LOCALSNAP} ${dset} ${DHOST} >> $LOGFILE
       fi
     done
@@ -141,12 +145,19 @@ case "${interval}" in
     # take snapshots, keep for one week
     for dset in $DATASETS
     do
-      $ZSNAP -v -s -S -a 1w $dset >> $LOGFILE
+      $ZSNAP -v -s -S -a 1w $dset >> $TEMP_MAIL
     done
 
     # Purge snapshots according to TTL
-    $ZSNAP -v -s -S -d -p ${PREFIXSNAP} >> $LOGFILE
-    printf '\n' >> $LOGFILE
+    $ZSNAP -v -s -S -d -p ${PREFIXSNAP} >> $TEMP_MAIL
+    printf '\n' >> $TEMP_MAIL
+
+    # Send email to admin
+    cat $TEMP_MAIL | mail ${MAILADMIN} -s "Daily snapshot $(hostname -f)"
+
+    # Send the previous log to the main logfile
+    cat ${TEMP_MAIL} >> ${LOGFILE}
+    rm -f ${TEMP_MAIL}
     ;;
 
   'weekly' )