root / bin / zfs-replica @ 41
Historique | Voir | Annoter | Télécharger (9,19 ko)
| 1 |
#!/bin/bash |
|---|---|
| 2 |
# $Id: zfs-replica 41 2013-10-09 08:44:10Z kreverch $ |
| 3 |
|
| 4 |
#--- Define variables ---# |
| 5 |
DIR_CONF_REPLICA="/opt/gZFS/replicas/" |
| 6 |
getConfigSnapshotTool="/sbin/get-conf-snapshot" |
| 7 |
zfsSnapshot="/sbin/zfs-snapshot" |
| 8 |
FILE_NAME=$1 |
| 9 |
|
| 10 |
#******************************** |
| 11 |
#* function initenv |
| 12 |
#******************************* |
| 13 |
function initenv {
|
| 14 |
if [[ -z $FILE_NAME ]] |
| 15 |
then |
| 16 |
echo "/!\\ Replica Configuration file missing /!\\" 1>&2 |
| 17 |
exit 1 |
| 18 |
fi |
| 19 |
|
| 20 |
if [ ! -f $1 ] |
| 21 |
then |
| 22 |
echo "/!\\ Replica Configuration file missing /!\\" 1>&2 |
| 23 |
exit 1 |
| 24 |
fi |
| 25 |
|
| 26 |
if [ ! -e $FILE_NAME ] |
| 27 |
then |
| 28 |
echo "Replica Configuration file not found" 1>&2 |
| 29 |
exit 1; |
| 30 |
fi |
| 31 |
echo $FILE_NAME |
| 32 |
lastsnapshotReplicated=$(cat $FILE_NAME|grep lastsnapshotreplicated|cut -d "=" -f2) |
| 33 |
server=$(cat $FILE_NAME|grep server|cut -d "=" -f2) |
| 34 |
nbreplica=$(cat $FILE_NAME|grep nbreplica|cut -d "=" -f2) |
| 35 |
namereplica=$(cat $FILE_NAME|grep namereplica|cut -d "=" -f2) |
| 36 |
namevolfs=$(cat $FILE_NAME|grep "name="|cut -d "=" -f2) |
| 37 |
|
| 38 |
if [[ -z $namereplica ]] || [[ -z $nbreplica ]] || [[ -z $namevolfs ]] |
| 39 |
then |
| 40 |
echo "Incoherence data in $FILE_NAME" 1>&2 |
| 41 |
exit 1 |
| 42 |
fi |
| 43 |
|
| 44 |
echo "$getConfigSnapshotTool $namevolfs" |
| 45 |
getlistSnapshot=$($getConfigSnapshotTool $namevolfs) |
| 46 |
if [[ "$getlistSnapshot" == "" ]] |
| 47 |
then |
| 48 |
echo "Please, enable a snapshot configuration for $namevolfs" 1>&2 |
| 49 |
exit 1 |
| 50 |
fi |
| 51 |
} |
| 52 |
|
| 53 |
#**************************************** |
| 54 |
#* function check server ssh connection |
| 55 |
#*************************************** |
| 56 |
function checkServerConnection {
|
| 57 |
|
| 58 |
ssh -o BatchMode=yes root@$server ls |
| 59 |
|
| 60 |
if [ "$?" != "0" ] |
| 61 |
then |
| 62 |
echo "SSH Connection server $server failed, please check the private/public key" 1>&2 |
| 63 |
exit 1 |
| 64 |
fi |
| 65 |
|
| 66 |
} |
| 67 |
|
| 68 |
function checkCoherence {
|
| 69 |
ssh -o BatchMode=yes root@$server zfs list $namereplica |
| 70 |
if [ "$?" != "0" ] |
| 71 |
then |
| 72 |
return false |
| 73 |
fi |
| 74 |
|
| 75 |
} |
| 76 |
|
| 77 |
function del_old_snapshot {
|
| 78 |
#*** ETAPE SUPPRESSION DES SNAPSHOTS OBSELETES ***# |
| 79 |
if [[ "$server" == "" ]] |
| 80 |
then |
| 81 |
echo "" |
| 82 |
CPT_SNAP=$(/sbin/zfs list -t snapshot -r $namereplica |cut -d" " -f1 |grep -i $namereplica\@ |wc -l) |
| 83 |
echo "*** Le nombre de snapshot pour $namereplica est : $CPT_SNAP" |
| 84 |
/sbin/zfs list -t snapshot -r $namereplica |
| 85 |
|
| 86 |
if [ $CPT_SNAP -gt $nbreplica ] |
| 87 |
then |
| 88 |
echo "*** Detection du snapshot le plus ancien" |
| 89 |
for ID_SNAP_OLDER in $(/sbin/zfs list -t snapshot -r $namereplica |cut -d" " -f1 |grep -i $namereplica\@) |
| 90 |
do |
| 91 |
echo "*** Le snapshot le plus ancien est : $ID_SNAP_OLDER" |
| 92 |
break |
| 93 |
done |
| 94 |
/sbin/zfs destroy $ID_SNAP_OLDER |
| 95 |
if [ $? -eq 0 ] |
| 96 |
then |
| 97 |
echo "*** Suppression du snapshot $ID_SNAP_OLDER [OK]" |
| 98 |
else |
| 99 |
echo "/!\\ Suppression du snapshot $ID_SNAP_OLDER [ERROR]." |
| 100 |
fi |
| 101 |
fi |
| 102 |
|
| 103 |
else |
| 104 |
echo "" |
| 105 |
CPT_SNAP=$(ssh -o BatchMode=yes root@$server /sbin/zfs list -t snapshot -r $namereplica |cut -d" " -f1 |grep -i $namereplica\@ |wc -l) |
| 106 |
echo "*** Le nombre de snapshot pour $namereplica est : $CPT_SNAP" |
| 107 |
ssh -o BatchMode=yes root@$server /sbin/zfs list -t snapshot -r $namereplica |
| 108 |
|
| 109 |
if [ $CPT_SNAP -gt $nbreplica ] |
| 110 |
then |
| 111 |
echo "*** Detection du snapshot le plus ancien" |
| 112 |
for ID_SNAP_OLDER in $(ssh -o BatchMode=yes root@$server /sbin/zfs list -t snapshot -r $namereplica |cut -d" " -f1 |grep -i $namereplica\@) |
| 113 |
do |
| 114 |
echo "*** Le snapshot le plus ancien est : $ID_SNAP_OLDER" |
| 115 |
break |
| 116 |
done |
| 117 |
ssh -o BatchMode=yes root@$server /sbin/zfs destroy $ID_SNAP_OLDER |
| 118 |
if [ $? -eq 0 ] |
| 119 |
then |
| 120 |
echo "*** Suppression du snapshot $ID_SNAP_OLDER [OK]" |
| 121 |
else |
| 122 |
echo "/!\\ Suppression du snapshot $ID_SNAP_OLDER [ERROR]." |
| 123 |
fi |
| 124 |
fi |
| 125 |
|
| 126 |
fi |
| 127 |
#*** FIN ETAPE SUPPRESSION DES SNAPSHOTS OBSELETES ***# |
| 128 |
} |
| 129 |
|
| 130 |
|
| 131 |
#************************************* |
| 132 |
#* function FULL REPLICATION |
| 133 |
#************************************* |
| 134 |
function fullreplication {
|
| 135 |
|
| 136 |
parentdataset=$(awk '{
|
| 137 |
n = split($0, t, "/") |
| 138 |
for (i = 0; ++i <= n-1;) |
| 139 |
if (i == 1) |
| 140 |
printf t[i] |
| 141 |
else |
| 142 |
printf "/"t[i] |
| 143 |
}' <<< $(echo $namereplica)) |
| 144 |
|
| 145 |
if [[ "$server" == "" ]] |
| 146 |
then |
| 147 |
|
| 148 |
/sbin/zfs list $parentdataset |
| 149 |
if [[ "?" != "0" ]] |
| 150 |
then |
| 151 |
/sbin/zfs create -p $parentdataset |
| 152 |
fi |
| 153 |
|
| 154 |
/sbin/zfs send $snapshot2replicate | /sbin/zfs recv $namereplica |
| 155 |
if [[ "$?" == "0" ]] |
| 156 |
then |
| 157 |
cpt=0 |
| 158 |
while read line |
| 159 |
do |
| 160 |
if [ $cpt -eq 0 ] |
| 161 |
then |
| 162 |
echo $line |
| 163 |
$(echo $line|sed -e "s:lastsnapshotreplicated=.*$:lastsnapshotreplicated=$snapshot2replicate:g" >$FILE_NAME) |
| 164 |
cpt=1 |
| 165 |
else |
| 166 |
$(echo $line|sed -e "s:lastsnapshotreplicated=.*$:astsnapshotreplicated=$snapshot2replicate:g" >>$FILE_NAME) |
| 167 |
fi |
| 168 |
done <<< "$(cat $FILE_NAME)" |
| 169 |
del_old_snapshot |
| 170 |
fi |
| 171 |
|
| 172 |
else |
| 173 |
checkServerConnection |
| 174 |
if [[ "$snapshot2replicate" != "" ]] |
| 175 |
then |
| 176 |
ssh -o BatchMode=yes root@$server /sbin/zfs list $parentdataset |
| 177 |
if [[ "?" != "0" ]] |
| 178 |
then |
| 179 |
ssh -o BatchMode=yes root@$server /sbin/zfs create -p $parentdataset |
| 180 |
fi |
| 181 |
|
| 182 |
/sbin/zfs send $snapshot2replicate |ssh -o BatchMode=yes root@$server /sbin/zfs recv $namereplica |
| 183 |
if [[ "$?" == "0" ]] |
| 184 |
then |
| 185 |
cpt=0 |
| 186 |
while read line |
| 187 |
do |
| 188 |
if [ $cpt -eq 0 ] |
| 189 |
then |
| 190 |
echo $line|sed -e "s:lastsnapshotreplicated=.*$:lastsnapshotreplicated=$snapshot2replicate:g" >$FILE_NAME |
| 191 |
cpt=1 |
| 192 |
else |
| 193 |
echo $line|sed -e "s:lastsnapshotreplicated=.*$:lastsnapshotreplicated=$snapshot2replicate:g" >>$FILE_NAME |
| 194 |
fi |
| 195 |
done <<< "$(cat $FILE_NAME)" |
| 196 |
del_old_snapshot |
| 197 |
fi |
| 198 |
fi |
| 199 |
exit 0 |
| 200 |
fi |
| 201 |
|
| 202 |
} |
| 203 |
|
| 204 |
|
| 205 |
|
| 206 |
function incremental_replication {
|
| 207 |
|
| 208 |
echo "Start incremental replication" |
| 209 |
if [[ "$server" == "" ]] |
| 210 |
then |
| 211 |
cmd="zfs send -i $lastsnapshotReplicated $namevolfs@$lastsnaphot | ssh -o BatchMode=yes root@$server zfs recv $namereplica" |
| 212 |
echo $cmd |
| 213 |
if [[ "$?" == "0" ]] |
| 214 |
then |
| 215 |
cpt=0 |
| 216 |
while read line |
| 217 |
do |
| 218 |
if [ $cpt -eq 0 ] |
| 219 |
then |
| 220 |
echo $line|sed -e "s:lastsnapshotreplicated=.*$:lastsnapshotreplicated=$snapshot2replicate:g" >$FILE_NAME |
| 221 |
cpt=1 |
| 222 |
else |
| 223 |
echo $line|sed -e "s:lastsnapshotreplicated=.*$:lastsnapshotreplicated=$snapshot2replicate:g" >$FILE_NAME |
| 224 |
fi |
| 225 |
done <<< "$(cat $FILE_NAME)" |
| 226 |
del_old_snapshot |
| 227 |
fi |
| 228 |
|
| 229 |
else |
| 230 |
checkServerConnection |
| 231 |
if [ "$snaphot2replicate" == "" ] |
| 232 |
then |
| 233 |
exit 1 |
| 234 |
else |
| 235 |
zfs send -i $lastsnapshotReplicated $namevolfs@$snaphot2replicate | ssh -o BatchMode=yes root@$server zfs recv $namereplica |
| 236 |
if [[ "$?" == "0" ]] |
| 237 |
then |
| 238 |
cpt=0 |
| 239 |
while read line |
| 240 |
do |
| 241 |
echo $line |
| 242 |
if [ $cpt -eq 0 ] |
| 243 |
then |
| 244 |
echo $line|sed -e "s:lastsnapshotreplicated=.*$:lastsnapshotreplicated=$namevolfs@$snaphot2replicate:g" >$FILE_NAME |
| 245 |
cpt=1 |
| 246 |
else |
| 247 |
echo $line|sed -e "s:lastsnapshotreplicated=.*$:lastsnapshotreplicated=$namevolfs@$snaphot2replicate:g" >>$FILE_NAME |
| 248 |
fi |
| 249 |
done <<< "$(cat $FILE_NAME)" |
| 250 |
del_old_snapshot |
| 251 |
fi |
| 252 |
fi |
| 253 |
fi |
| 254 |
|
| 255 |
} |
| 256 |
|
| 257 |
|
| 258 |
#**************************************** |
| 259 |
#* NO INTERACTIVE MODE |
| 260 |
#**************************************** |
| 261 |
function nointeractive {
|
| 262 |
|
| 263 |
#--- check and init env ---# |
| 264 |
initenv |
| 265 |
|
| 266 |
fileconf=$($getConfigSnapshotTool $namevolfs|grep fileconf|cut -d "=" -f2) |
| 267 |
NBsnapshot=$(/sbin/zfs list -H -r -t snapshot $namevolfs|wc -l) |
| 268 |
|
| 269 |
if [[ $NBsnapshot -eq 0 ]] |
| 270 |
then |
| 271 |
echo "no snapshot, start snapshoting ..." |
| 272 |
$zfsSnapshot $fileconf |
| 273 |
fi |
| 274 |
|
| 275 |
valchk=checkCoherence |
| 276 |
if [[ "$valchk" == "false" ]] && [[ "$lastsnapshotReplicated" != "" ]] |
| 277 |
then |
| 278 |
echo "Replication by incremental snapshot is not possible : checkcoherence return false " |
| 279 |
echo "Start FULL Replication ..." |
| 280 |
while read line |
| 281 |
do |
| 282 |
snapshot2replicate=$(echo $line |echo $line |sed -e "s/ \+/ /g"|cut -d " " -f1) |
| 283 |
done <<< "$(/sbin/zfs list -H -r -t snapshot $namevolfs)" |
| 284 |
fullreplication |
| 285 |
fi |
| 286 |
|
| 287 |
|
| 288 |
#--- FULL REPLICATION ---# |
| 289 |
if [[ $NBsnaphot -eq 1 ]] || [[ "$lastsnapshotReplicated" == "" ]] |
| 290 |
then |
| 291 |
echo "Replication by incremental snapshot is not possible" |
| 292 |
echo "Start FULL Replication ..." |
| 293 |
while read line |
| 294 |
do |
| 295 |
snapshot2replicate=$(echo $line |echo $line |sed -e "s/ \+/ /g"|cut -d " " -f1) |
| 296 |
done <<< "$(/sbin/zfs list -H -r -t snapshot $namevolfs)" |
| 297 |
fullreplication |
| 298 |
fi |
| 299 |
|
| 300 |
#-- INCREMENTAL REPLICATION ---# |
| 301 |
if [[ $NBsnapshot -gt 1 ]] |
| 302 |
then |
| 303 |
cpt=1 |
| 304 |
while read line |
| 305 |
do |
| 306 |
|
| 307 |
if [[ $cpt -eq 1 ]] |
| 308 |
then |
| 309 |
snaphot2replicate=$(echo $line |sed -e "s/ \+/ /g"|cut -d " " -f1|cut -d "@" -f2) |
| 310 |
echo $lastsnaphot |
| 311 |
echo $snaphot2replicate |
| 312 |
break |
| 313 |
fi |
| 314 |
cpt=$cpt+1 |
| 315 |
done <<< "$(/sbin/zfs list -H -r -t snapshot $namevolfs|tac)" |
| 316 |
lastsnapshot=$(echo $lastsnapshotReplicated |sed -e "s/ \+/ /g"|cut -d " " -f1|cut -d "@" -f2) |
| 317 |
|
| 318 |
if [ "$snaphot2replicate" == "$lastsnapshot" ] |
| 319 |
then |
| 320 |
echo "Nothing to replicate" 1>&2 |
| 321 |
exit 1 |
| 322 |
|
| 323 |
fi |
| 324 |
check_lastsnapshotReplica=$(ssh -o BatchMode=yes root@$server /sbin/zfs list -H -r -t snapshot $namereplica |grep $lastsnapshot|wc -l) |
| 325 |
check_currentsnapshotReplica=$(ssh -o BatchMode=yes root@$server /sbin/zfs list -H -r -t snapshot $namereplica |grep $snaphot2replicate=|wc -l) |
| 326 |
if [[ $check_lastsnapshotReplica -eq 0 ]] |
| 327 |
then |
| 328 |
echo "Incoherence, incremental replication failed : $lastsnapshotReplicated is missing" 1>&2 |
| 329 |
exit 1 |
| 330 |
fi |
| 331 |
|
| 332 |
if [[ $check_currentsnapshotReplica -eq 1 ]] |
| 333 |
then |
| 334 |
echo "No replica to do, $lastSnapshot already exists" 1>&2 |
| 335 |
exit 1 |
| 336 |
fi |
| 337 |
fi |
| 338 |
echo $snaphot2replicate |
| 339 |
incremental_replication |
| 340 |
} |
| 341 |
|
| 342 |
nointeractive |
| 343 |
|