IBM XIV Storage System Copy Services and Migration

To show that the restore operation is working, the database is dropped (Figure 1-50) and allthe data is lost. After the drop operation is complete, the database is permanently removedfrom MySQL. It is possible to perform a restore action from the incremental backup. For thisexample, the snapshot function is used to restore the entire database.Figure 1-50 Dropping the databaseThe restore script, shown in Example 1-19, stops the MySQL daemon and unmounts theLinux file systems. Then the script restores the snapshot and finally remounts and startsMySQL.Example 1-19 Restore script[root@x345-tic-30 ~]# cat mysql_restore# This resotration just overwrites all in the database and puts the# data back to when the snapshot was taken. It is also possible to do# a restore based on the incremental data; this script does not handle# that condition.# Report the time of backing update# First shutdown mysqlmysqladmin -u root -p password shutdown# Unmount the filesystemsumount /xiv_pfe_1umount /xiv_pfe_2#List all the snap groups/root/XIVGUI/xcli -c xiv_pfe snap_group_list cg="MySQL Group"#Prompt for the group to restoreecho "Enter Snapshot group to restore: "read -e snap_groupChapter 1. Snapshots 37