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| #!/bin/sh | ||
| #--------------------------------------------------------------------------- | ||
| # (c) Copyright IBM Corp. 2013 All rights reserved. | ||
| # | ||
| # Script Name: dm-1310acs_lvm.sh | ||
| # | ||
| # Purpose: implement the scripted interface for DB2 ACS using Linux LVM. | ||
| # | ||
| # Please see developerwork article for details: https://www.ibm.com/developerworks/data/library/techarticle/dm-1310scriptdb2copy2/dm-1310scriptdb2copy2-pdf.pdf | ||
| # | ||
| # The following sample of source code ("Sample") is owned by International | ||
| # Business Machines Corporation or one of its subsidiaries ("IBM") and is | ||
| # copyrighted and licensed, not sold. You may use, copy, modify, and | ||
| # distribute the Sample in any form without payment to IBM, for the purpose of | ||
| # assisting you in the development of your applications. | ||
| # | ||
| # The Sample code is provided to you on an "AS IS" basis, without warranty of | ||
| # any kind. IBM HEREBY EXPRESSLY DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR | ||
| # IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | ||
| # MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do | ||
| # not allow for the exclusion or limitation of implied warranties, so the above | ||
| # limitations or exclusions may not apply to you. IBM shall not be liable for | ||
| # any damages you suffer as a result of using, copying, modifying or | ||
| # distributing the Sample, even if IBM has been advised of the possibility of | ||
| # such damages. | ||
| #--------------------------------------------------------------------------- | ||
|
|
||
|
|
||
| # CONSTANTS | ||
| ######################################################################### | ||
| # Possible return codes | ||
| RC_OK=0 | ||
| RC_COMM_ERROR=2 | ||
| RC_INV_ACTION=4 | ||
| RC_NOT_ENOUGH_SPACE=28 | ||
| RC_DEV_ERROR=18 | ||
| RC_INV_DEV_HANDLE=12 | ||
| RC_IO_ERROR=25 | ||
| RC_ERROR=30 | ||
|
|
||
| RC=$RC_OK | ||
|
|
||
| # HELPER | ||
| ######################################################################### | ||
| # getSetting() | ||
| # | ||
| # Searches for setting in the protocol file identified | ||
| # by its keyword $1 and stores its value in the tmp variable | ||
| # _setting | ||
| # @param $1 - Setting's keyword | ||
| # @param $2 - Default value if setting's keyword was not found | ||
| # (optional, if not set $_setting will be empty) | ||
| # @param $3 - Configuration file to be opened (optional, if not | ||
| # set, $config will be used) | ||
| ######################################################################## | ||
| getSetting() { | ||
| useConfig=$config | ||
| if [ "$3" != "" ] | ||
| then | ||
| useConfig=$3 | ||
| fi | ||
|
|
||
| cmd="awk -F= '/^${1}/ { print \$2 }' $useConfig | head -1" | ||
| _setting=`eval $cmd` | ||
| if [ "$2" != "" -a "$_setting" = "" ] | ||
| then | ||
| _setting=$2 | ||
| fi | ||
| } | ||
|
|
||
| # storeSetting() | ||
| # | ||
| # Stores a local variable in the protocol file which can be | ||
| # used later using getSetting | ||
| # @param $1 Setting's key | ||
| # $2 Settings' value | ||
| ####################################################################### | ||
| storeSetting() { | ||
| echo "$1=$2" | ||
| } | ||
|
|
||
| doPrepare() { | ||
| # | ||
| # P R E P A R E | ||
| # | ||
| # -------------------------------------- | ||
| freespace=`sudo pvdisplay -c | awk -F":" '{print $10}'` | ||
| neededspace=0 | ||
| for i in `grep "^DATAPATH" $config | awk -F= '{print $2}' | xargs -I\{\} df \{\} | grep '^/' | awk '{print $1;}' | uniq ` | ||
| do | ||
| currentspace=`lvdisplay -c $i | awk -F":" '{print $8}'` | ||
| neededspace=`expr $neededspace + $currentspace` | ||
| done | ||
| getSetting "DB2BACKUP_LOGS" | ||
| includeLogs=$_setting | ||
| if [ $includeLogs = "INCLUDE" -a $RC -eq 0 ] | ||
| then | ||
| for i in `grep "^LOGPATH" $config | awk -F= '{print $2}' | xargs -I\{\} df \{\} | grep '^/' | awk '{print $1;}' | uniq ` | ||
| do | ||
| currentspace=`lvdisplay -c $i | awk -F":" '{print $8}'` | ||
| neededspace=`expr $neededspace + $currentspace` | ||
| done | ||
| fi | ||
| if [ $neededspace -gt $freespace ] | ||
| then | ||
| RC=$RC_NOT_ENOUGH_SPACE | ||
| fi | ||
| # -------------------------------------- | ||
| } | ||
|
|
||
| doSnapshot() { | ||
| # | ||
| # S N A P S H O T | ||
| # | ||
| # -------------------------------------- | ||
| getSetting "TIMESTAMP" | ||
| timestamp=$_setting | ||
| for i in `grep "^DATAPATH" $config | awk -F= '{print $2}' | xargs -I\{\} df \{\} | grep '^/' | awk '{print $1;}' | uniq ` | ||
| do | ||
| vol=`sudo lvdisplay -c $i | awk -F: '{print $1;}'` | ||
| storeSetting "VOLUME_DATA" $vol | ||
| snapName=`basename $vol`_snap_$timestamp | ||
| cmd="sudo lvcreate -s -n $snapName -l100%ORIGIN $vol" | ||
| $RC=`eval $cmd` | ||
| if [ $RC -neq 0 ] | ||
| then | ||
| echo "# Snapshotting of $vol failed" | ||
| break | ||
| fi | ||
| done | ||
| getSetting "DB2BACKUP_LOGS" | ||
| includeLogs=$_setting | ||
| if [ $includeLogs = "INCLUDE" -a $RC -eq 0 ] | ||
| then | ||
| for i in `grep "^LOGPATH" $config | awk -F= '{print $2}' | xargs -I\{\} df \{\} | grep '^/' | awk '{print $1;}' | uniq ` | ||
| do | ||
| vol=`sudo lvdisplay -c $i | awk -F: '{print $1;}'` | ||
| storeSetting "VOLUME_LOG" $vol | ||
| snapName=`basename $vol`"_snap_"$timestamp | ||
| cmd="sudo lvcreate -s -n $snapName -l100%ORIGIN $vol" | ||
| $RC=`eval $cmd` | ||
| if [ $RC -neq 0 ] | ||
| then | ||
| echo "# Snapshotting of $vol failed" | ||
| break | ||
| fi | ||
| done | ||
| fi | ||
| # -------------------------------------- | ||
| } | ||
|
|
||
| doRestore() { | ||
| # | ||
| # R E S T O R E | ||
| # | ||
| # -------------------------------------- | ||
|
|
||
| getSetting "OBJ_ID" | ||
| id=$_setting | ||
| # Construct key to search for in currenct protocol file | ||
| key="RESULT_"$id"_FILE" | ||
| getSetting $key | ||
| oldConfig=$_setting | ||
|
|
||
| getSetting "TIMESTAMP" "" $oldConfig | ||
| timestamp=$_setting | ||
| for i in `grep "^VOLUME_DATA" $oldConfig | awk -F= '{print $2}'` | ||
| do | ||
| vol=$i"_snap_"$timestamp | ||
| echo "# Unmounting volume $vol" | ||
| sudo umount -f $i | ||
| echo "# Merging volume $vol" | ||
| sudo lvconvert --merge --background $vol | ||
| if [ $? -neq 0 ] | ||
| then | ||
| echo "# Deactivating volume $vol" | ||
| sudo lvchange -an $i | ||
| echo "# Activating volume $vol" | ||
| sudo lvchange -ay $i | ||
| fi | ||
| echo "# Mounting volume $vol" | ||
| sudo mount $i | ||
| echo "# Take the backup of volume $vol again" | ||
| sudo lvcreate -s -n $vol -l100%ORIGIN $i | ||
| done | ||
| # if logs included | ||
| getSetting "ACTION" | ||
| readAction=$_setting | ||
| if [ $readAction = "DB2ACS_ACTION_READ_BY_OBJECT" ] | ||
| then | ||
| for i in `grep "^VOLUME_LOG" $oldConfig | awk -F= '{print $2}'` | ||
| do | ||
| vol=$i"_snap_"${timestamp} | ||
| echo "# Umounting volume $vol" | ||
| sudo umount -f $i | ||
| echo "# Merging volume $vol" | ||
| sudo lvconvert --merge --background $vol | ||
| if [ $? -neq 0 ] | ||
| then | ||
| echo "# Deactivating volume $vol" | ||
| sudo lvchange -an $i | ||
| echo "# Activating volume $vol" | ||
| sudo lvchange -ay $i | ||
| fi | ||
| echo "# Mounting volume $vol" | ||
| sudo mount $i | ||
| echo "# Take the backup of volume $vol again" | ||
| sudo lvcreate -s -n $vol -l100%ORIGIN $i | ||
| done | ||
| fi | ||
| # -------------------------------------- | ||
| } | ||
|
|
||
| doDelete() { | ||
| # | ||
| # D E L E T E | ||
| # | ||
| # -------------------------------------- | ||
| getSetting "RESULT_"${objectId}"_FILE" | ||
| oldConfig=$_setting | ||
| getSetting "TIMESTAMP" "" $oldConfig | ||
| timestamp=$_setting | ||
| for i in `grep "^VOLUME_DATA" $oldConfig | awk -F= '{print $2}'` | ||
| do | ||
| vol=$i"_snap_"${timestamp} | ||
| echo "# Volume $vol" | ||
| echo "# "`sudo lvremove -f $vol` | ||
| done | ||
| getSetting "DB2BACKUP_LOGS" "" $oldConfig | ||
| includeLogs=$_setting | ||
| if [ $includeLogs = "INCLUDE" ] | ||
| then | ||
| for i in `grep "^VOLUME_LOG" $oldConfig | awk -F= '{print $2}'` | ||
| do | ||
| vol=$i"_snap_"${timestamp} | ||
| echo "# Volume $vol" | ||
| echo "# "`sudo lvremove -f $vol` | ||
| done | ||
| fi | ||
| rm $oldConfig | ||
| # -------------------------------------- | ||
| } | ||
|
|
||
| doVerify() { | ||
| # | ||
| # V E R I F Y | ||
| # | ||
| # -------------------------------------- | ||
| mkdir /tmp/verify | ||
| getSetting "TIMESTAMP" "" $oldConfig | ||
| timestamp=$_setting | ||
| for i in `grep "^VOLUME_DATA" $config | awk -F= '{print $2}'` | ||
| do | ||
| vol=$i"_snap_"$timestamp | ||
| sudo mount $vol /tmp/verify | ||
| $RC=$? | ||
| sudo umount /tmp/verify | ||
| if [ $RC -neq 0 ] | ||
| then | ||
| echo "# Mounting of $vol failed" | ||
| break | ||
| fi | ||
| echo "# Volume $i checked" | ||
| done | ||
| getSetting "DB2BACKUP_LOGS" | ||
| includeLogs=$_setting | ||
| if [ $includeLogs = "INCLUDE" -a $RC -eq 0 ] | ||
| then | ||
| for i in `grep "^VOLUME_LOG" $config | awk -F= '{print $2}'` | ||
| do | ||
| vol=$i"_snap_"$timestamp | ||
| sudo mount $vol /tmp/verify | ||
| $RC=$? | ||
| sudo umount /tmp/verify | ||
| if [ $RC -neq 0 ] | ||
| then | ||
| echo "# Mounting of $vol failed" | ||
| break | ||
| fi | ||
| echo "# Volume $i checked" | ||
| done | ||
| fi | ||
| rmdir /tmp/verify | ||
| # -------------------------------------- | ||
| } | ||
|
|
||
| doStoreMetaData() { | ||
| # | ||
| # S T O R E M E T A D A T A | ||
| # | ||
| # -------------------------------------- | ||
| # The snapshot is successful | ||
| # The protocol file can be saved, | ||
| # only some non important lines will be added | ||
| : # noop | ||
| # -------------------------------------- | ||
| } | ||
|
|
||
| doRollback() { | ||
| # | ||
| # R O L L B A C K | ||
| # | ||
| # -------------------------------------- | ||
| for i in `grep "^VOLUME_DATA" $config | awk -F= '{print $2}'` | ||
| do | ||
| sudo lvremove $i_snap_$timestamp | ||
| done | ||
| getSetting "DB2BACKUP_LOGS" | ||
| includeLogs=$_setting | ||
| if [ $includeLogs = "INCLUDE" -a $RC -eq 0 ] | ||
| then | ||
| for i in `grep "^VOLUME_LOG" $config | awk -F= '{print $2}'` | ||
| do | ||
| sudo lvremove $i_snap_$timestamp | ||
| done | ||
| fi | ||
| # -------------------------------------- | ||
| } | ||
|
|
||
|
|
||
| # | ||
| # M A I N | ||
| # | ||
| # -------------------------------------- | ||
| # COLLECT PARAMS | ||
| # -------------------------------------- | ||
| while getopts a:c:o:t: OPTION | ||
| do | ||
| case ${OPTION} in | ||
| a) action=${OPTARG} | ||
| ;; | ||
| c) config=${OPTARG} | ||
| ;; | ||
| o) objectId=${OPTARG} | ||
| ;; | ||
| t) timestamp=${OPTARG} | ||
| ;; | ||
| \?) echo "# Unknown parameter '$1'" | ||
| esac | ||
| done | ||
|
|
||
| repository="`dirname $config`/" | ||
|
|
||
| # WORK | ||
| # -------------------------------------- | ||
|
|
||
| case "$action" in | ||
| prepare) | ||
| doPrepare | ||
| ;; | ||
| snapshot) | ||
| doSnapshot | ||
| ;; | ||
| restore) | ||
| doRestore | ||
| ;; | ||
| delete) | ||
| doDelete | ||
| ;; | ||
| verify) | ||
| doVerify | ||
| ;; | ||
| store_metadata) | ||
| doStoreMetaData | ||
| ;; | ||
| rollback) | ||
| doRollback | ||
| ;; | ||
| esac | ||
|
|
||
| exit $RC |
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