解释以下脚本：@echo off&setlocal enabledelayedexpansion :: 日志路径 set var_date=%date:~0,10% set var_date=%var_date:-=% set log_path=%temp%\ibdata%var_date%.log echo ******* start process ******** echo. echo %time% start process >> %log_path% echo %log_path% pause :: 脚本的存放位置固定为 D:\naura echo %cd% pause if %cd% NEQ D:\naura ( echo %time% work path is %cd% >> %log_path% echo 请将脚本文件及ibdata1文件放在 D:\naura 目录下 echo. pause exit 0 ) :: 检查ibdata1 文件是否存在 if not exist ibdata1 ( echo ibdata1 文件不存在，请检查脚本文件所在目录 echo. pause exit 0 ) :: 检查ibdata1 文件是否存在 if not exist tables.txt ( echo tables.txt 文件不存在，请检查脚本文件所在目录 echo. pause exit 0 ) :: 校验 ibdata1 的大小是否符合预期 for /f %%i in ('dir /b ibdata1') do ( echo %time% lastest ibdata1 file size is %%~zi >> %log_path% if %%~zi NEQ 10485760 ( echo ibdata1 文件大小不对，请核对脚本目录下 ibdata1 文件 echo. pause exit 0 ) ) set excute_h=1 set excute_m=1 set excute_s=1 :: 是否需要手动干预的标志 set handwork=0 :: 检查数据库是否启动 同时检查是否有数据库操作权限 tasklist|find /i "mysqld.exe" >> %log_path% if %errorlevel% NEQ 0 ( echo %time% mysql is not running and started to start >> %log_path% net start mysql >> %log_path% 2>&1 if !errorlevel! NEQ 0 ( echo %time% failed to start mysql echo mysql 启动失败，请手动启动mysql服务之后，再执行脚本 echo. pause exit 0 ) ) else ( echo %time% verify that we have execute net permission >> %log_path% net help >> %log_path% 2>&1 if !errorlevel! NEQ 0 ( echo %time% we don't have authority >> %log_path% echo 由于权限问题，清理过程需要您手动干预，请不要离开机台，注意脚本运行！！ echo. pause echo. set handwork=1 ) ) echo %time% begin excute clean mysql data echo. :: 定义变量，方便修改 set mysqlServer=localhost set mysqlUser=root set mysqlPassword=8888 set database_fa300=fa300 set database_scope=scope set curObj.table=0 set curObj.field=0 set export_ingnore_table=%database_scope% set dataSavePath=naura_scope set tryCount=0 :: 获取所有数据记录表，表中数据需要根据时间备份 set tableCounts=0 set obj=0 for /f "delims=: tokens=1-2" %%i in (tables.txt) do ( for /f "skip=1" %%a in ('mysql -h%mysqlServer% -u%mysqlUser% -p%mysqlPassword% -e "select count(0) from information_schema.tables where table_name='%%i' and table_schema='%database_scope%'"') do ( if %%a EQU 1 ( set obj[!tableCounts!].table=%%i set obj[!tableCounts!].field=%%j set /a tableCounts=!tableCounts!+1 ) ) ) :: 脚本执行过程中产生的临时参数保存路径 set process_param=%temp%\ibdata_param.log :: 临时数据保存的磁盘 set param_volume=0 :: 脚本执行到第几步 set param_step=0 :: 参数文件产生日期 set param_date=0 :: 备份天数 set param_day=0 :: ibdata 文件路径 set param_ibdataPath=0; :: 导出或导入数组 obj 的下标 set param_tableIndex=0; set begin_time=%time% if not exist %process_param% goto:step0 echo %time% %process_param% file exist >> %log_path% echo ----------------------- >> %log_path% type %process_param% >> %log_path% echo ----------------------- >> %log_path% for /f "delims== tokens=1-2" %%i in (%process_param%) do ( if %%i EQU param_date ( set param_date=%%j ) ) echo %time% param_date: %param_date% >> %log_path% :: 判断已经存在的参数，是否为同一天，默认同一天的可以继续使用 if %date:~0,10% NEQ %param_date% goto:step0 :: 获取所有的参数 for /f "delims== tokens=1-2" %%i in (%process_param%) do ( if %%i EQU volume ( set param_volume=%%j ) else if %%i EQU step ( set param_step=%%j ) else if %%i EQU day ( set param_day=%%j ) else if %%i EQU ibdataPath ( set param_ibdataPath=%%j ) else ( set param_tableIndex=%%j ) ) echo %time% param: %param_volume% %param_step% %param_day% %param_ibdataPath% %param_tableIndex%>> %log_path% if not exist "%param_ibdataPath%" goto:step0 goto:step%param_step% :: 环境准备 :: 1 获取临时数据存储位置 :: 2 获取 mysql data 的位置 :: 3 判断临时数据存储空间是否满足 :: 4 估算脚本运行时间 :step0 echo %time% begin excute step0 >> %log_path% del /Q/F %process_param% >> %log_path% 2>&1 :: 自动获取可用空间最大的非系统盘, 如果存在 E 盘，则直接默认 E 盘 set param_volume=0 set volume_freespace=0 for /f "Skip=2 tokens=1-2" %%i in ('Wmic LogicalDisk where "DriveType=3" Get FreeSpace^,Name') do ( echo %time% %%j %%i >> %log_path% set tempSize=%%i set /a tempSize=!tempSize:~0,-6! / 1074 > nul 2>&1 if %%j EQU E: ( set param_volume=%%j set /a volume_freespace=!tempSize! goto:endVolume ) if !tempSize! GTR !volume_freespace! ( set param_volume=%%j set /a volume_freespace=!tempSize! ) ) :endVolume echo %time% the path to save the temp data is %param_volume%, freespce is %volume_freespace%GB >> %log_path% if not exist %param_volume%\%dataSavePath% md %param_volume%\%dataSavePath% :: 获取 ibdata1 文件路径 echo %time% show variables datadir >> %log_path% mysql -h %mysqlServer% -u %mysqlUser% -p%mysqlPassword% -e "show variables like 'datadir'" > %param_volume%\%dataSavePath%\data.txt 2>>%log_path% type %param_volume%\%dataSavePath%\data.txt >> %log_path% for /f "delims= tokens=1" %%i in (%param_volume%\%dataSavePath%\data.txt) do ( echo %%i | findstr "Value" >nul && echo. >nul || set param_ibdataPath=%%i ) set param_ibdataPath=%param_ibdataPath:~8%ibdata1 set param_ibdataPath=%param_ibdataPath:\\=\% if not exist "%param_ibdataPath%" ( mysql -h %mysqlServer% -u %mysqlUser% -p%mysqlPassword% -e "show variables like 'innodb_data_home_dir'" > %param_volume%\%dataSavePath%\data.txt 2>>%log_path% type %param_volume%\%dataSavePath%\data.txt >> %log_path% for /f "delims= tokens=1" %%i in (%param_volume%\%dataSavePath%\data.txt) do ( echo %%i | findstr "Value" >nul && echo. >nul || set param_ibdataPath=%%i ) set param_ibdataPath=!param_ibdataPath:~21!ibdata1 set param_ibdataPath=!param_ibdataPath:\\=\! ) echo. echo !param_ibdataPath! echo ibdata1 file path !param_ibdataPath! >> %log_path% echo. if not exist "%param_ibdataPath%" ( echo 没有找到 ibdata 文件，请联系软件工程师！！！！ echo. pause exit ) :: 获取客户端 ibdata file size set oldIbdataSize=0 for /f "tokens=3" %%i in ('dir "%param_ibdataPath%"^|find /i "1 个文件"') do ( set oldIbdataSize=%%i ) set oldIbdataSize=%oldIbdataSize:,=% echo %time% old ibdata file size is %oldIbdataSize% >> %log_path% :: 判断临时数据存储位置的空间是否够用 set /a oldIbdataSize=%oldIbdataSize:~0,-6% / 1074 echo %time% old ibdata file size is %oldIbdataSize%GB >> %log_path% set /a oldIbdataSize=%oldIbdataSize%+10 if %volume_freespace% LSS %oldIbdataSize% ( echo %param_volume% freespce is too small >> %log_path% echo %param_volume% 剩余空间太小，至少需要 %oldIbdataSize%GB 空间，请手动清理后再次运行脚本 echo. pause exit 0 ) set /a oldIbdataSize=%oldIbdataSize%*3 echo 整个清理过程大约需要 %oldIbdataSize% min echo. set param_step=1 call:fun_save_param echo %time% end excute step0 >> %log_path% :: 输入所需备份多久的数据，主要备份腔室表和 transfer表 :step1 echo %time% begin excute step1 >> %log_path% set /p param_day=请输入需要备份数据的天数（最大为120）： echo. echo %param_day%|findstr "^[0-9]*$">nul if %errorlevel% NEQ 0 ( echo 请输入整数 echo. goto:step1 ) if %param_day% GTR 120 ( echo 备份时间超过 120 ，请重新输入 echo. goto:step1 ) set param_step=2 call:fun_save_param echo %time% end excute step1 >> %log_path% :: 备份客户端 ibdata :step2 echo %time% begin excute step2 >> %log_path% set tryCount=0 :backup set /a tryCount=%tryCount% + 1 if %tryCount% EQU 4 ( echo ！！！！！备份 %param_ibdataPath% 失败，请手动备份至其他磁盘后，再继续执行脚本！！！！！ echo. pause set param_step=3 call:fun_save_param exit 0 ) echo %time% begin backup ibdata1 echo %time% begin backup ibdata1 >> %log_path% copy /Y/V/Z "%param_ibdataPath%" %param_volume%\%dataSavePath%\ibdata1 if %errorlevel% NEQ 0 goto:backup echo %time% end backup ibdata1 echo. set param_step=3 call:fun_save_param echo %time% end backup ibdata1 >> %log_path% echo %time% end excute step2 >> %log_path% :: 清理数据库中备份表，及备份表中数据 :step3 echo %time% begin excute step3 >> %log_path% echo %time% begin clean history table for /f "skip=1" %%a in ('mysql -h%mysqlServer% -u%mysqlUser% -p%mysqlPassword% -e "select count(0) from information_schema.tables where table_name='backuphistory' and table_schema='%database_scope%'"') do ( if %%a EQU 1 ( goto:history ) else ( goto:skiphistory ) ) :history for /f "skip=1 tokens=1" %%i in ('mysql -h%mysqlServer% -u%mysqlUser% -p%mysqlPassword% --database %database_scope% -e "select backupname from backuphistory where backuptime < date_sub(curdate(), interval %param_day% day)"') do ( echo %time% delete history table %%i echo %time% delete history table %%i >> %log_path% mysql -h%mysqlServer% -u%mysqlUser% -p%mysqlPassword% --database %database_scope% -e "delete from backuphistory where backupname='%%i'" 2>>%log_path% mysql -h%mysqlServer% -u%mysqlUser% -p%mysqlPassword% --database %database_scope% -e "drop table %%i" 2>>%log_path% ) :skiphistory echo %time% end clean history table echo. set param_step=4 call:fun_save_param echo %time% end excute step3 >> %log_path% :: 导出 scope 相关的表 :step4 echo %time% begin excute step4 >> %log_path% :: 循环导出 obj 数组中的表 set currentIndex=0 :exportStartLoop if %currentIndex% EQU %tableCounts% goto:exportEndLoop for /f "usebackq delims==. tokens=1-3" %%i in (`set obj[%currentIndex%]`) do ( set curObj.%%j=%%k ) set export_ingnore_table=%export_ingnore_table% --ignore-table=%database_scope%.%curObj.table% if %currentIndex% LSS %param_tableIndex% ( set /a currentIndex=%currentIndex% + 1 goto:exportStartLoop ) echo %time% begin export table %curObj.table% echo %time% begin export table %curObj.table% >> %log_path% set tryCount=0 :: 导出失败进行 3 次尝试 :exporttable if %tryCount% EQU 3 ( echo 导出表 %curObj.table% 失败 无法继续 请联系软件工程人员 echo. pause exit 0 ) if %param_day% EQU 0 ( mysqldump -h%mysqlServer% -u%mysqlUser% -p%mysqlPassword% --no-data --databases %database_scope% --tables %curObj.table% > %param_volume%\%dataSavePath%\%curObj.table%.sql 2>>%log_path% ) else ( mysqldump -h%mysqlServer% -u%mysqlUser% -p%mysqlPassword% --databases %database_scope% --tables %curObj.table% --where="%curObj.field%>date_sub(curdate(), interval %param_day% day)" > %param_volume%\%dataSavePath%\%curObj.table%.sql 2>>%log_path% ) if %errorlevel% NEQ 0 ( echo %time% failed to export table:%curObj.table% >> %log_path% set /a tryCount=%tryCount% + 1 goto:exporttable ) echo %time% end export table %curObj.table% echo. echo %time% end export table %curObj.table% >> %log_path% set /a currentIndex=%currentIndex% + 1 set /a param_tableIndex=%currentIndex% call:fun_save_param goto:exportStartLoop :exportEndLoop :: 导出 scope 库 set tryCount=0 :exportscope if %tryCount% EQU 3 ( echo 导出库 %database_scope% 失败 无法继续 请联系软件工程人员 echo. pause exit 0 ) if %database_scope%% NEQ null ( echo %time% begin export database %database_scope% echo %time% begin export database %database_scope% : %export_ingnore_table% >> %log_path% mysqldump -h%mysqlServer% -u%mysqlUser% -p%mysqlPassword% --databases --events --routines %export_ingnore_table%> %param_volume%\%dataSavePath%\%database_scope%.sql 2>>%log_path% echo %time% end export database %database_scope% echo. echo %time% end export database %database_scope% >> %log_path% ) if %errorlevel% NEQ 0 ( echo %time% failed to export database:%database_scope% >> %log_path% set /a tryCount=%tryCount% + 1 goto:exportscope ) set param_step=5 call:fun_save_param echo %time% end excute step4 >> %log_path% :: 导出fa300 库 :step5 echo %time% begin excute step5 >> %log_path% set tryCount=0 :exportfa300 if %tryCount% EQU 3 ( echo 导出库 %database_fa300% 失败 无法继续 请联系软件工程人员 echo. pause exit 0 ) if %database_fa300% NEQ null ( echo %time% begin export database %database_fa300% echo %time% begin export database %database_fa300% >> %log_path% mysqldump -h%mysqlServer% -u%mysqlUser% -p%mysqlPassword% --databases --events --routines %database_fa300% > %param_volume%\%dataSavePath%\%database_fa300%.sql 2>>%log_path% echo %time% end export database %database_fa300% echo. echo %time% end export database %database_fa300% >> %log_path% ) if %errorlevel% NEQ 0 ( echo %time% failed to export database:%database_fa300% >> %log_path% set /a tryCount=%tryCount% + 1 goto:exportfa300 ) set param_step=6 set param_tableIndex=0 call:fun_save_param echo ********** export data successfully *********** echo. echo %time% exprot data successfully >> %log_path% echo %time% end excute step5 >> %log_path% :: 将干净的 ibdata 替换至客户端 :step6 echo %time% begin excute step6 >> %log_path% echo %time% begin stop mysql echo %time% begin stop mysql >> %log_path% call:fun_stopmysql echo %time% end stop mysql echo. set tryCount=0 :replace :: 三次失败尝试，如果都失败，就需要收到操作 set /a tryCount=%tryCount% + 1 if %tryCount% EQU 4 ( echo ！！！！！替换 %param_ibdataPath% 失败！！！！！ echo. echo 请手动将脚本目录下 ibdata1 文件替换至 %param_ibdataPath% echo. pause set param_step=7 call:fun_save_param exit 0 ) ::替换 ibdata1 文件 echo %time% begin replace ibdata1 echo %time% begin replace ibdata1 >> %log_path% copy /Y/V/Z ibdata1 "%param_ibdataPath%" if %errorlevel% NEQ 0 goto:replace echo %time% end replace ibdata1 echo. echo %time% end replace ibdata1 >> %log_path% set param_step=7 call:fun_save_param echo ********** replace ibdate1 successfully *********** echo. echo %time% end excute step6 >> %log_path% :step7 echo %time% begin excute step7 >> %log_path% echo %time% begin start mysql echo %time% begin start mysql >> %log_path% call:fun_startmysql echo %time% end start mysql echo. echo %time% end start mysql >> %log_path% :: 导入fa300库 set tryCount=0 :importfa300 if %tryCount% EQU 3 ( echo 导入库 %database_fa300% 失败 无法继续 请联系软件工程人员 echo. pause exit 0 ) if %database_fa300% NEQ null ( echo %time% begin import basedata %database_fa300% echo %time% begin import basedata %database_fa300% >> %log_path% mysql -h %mysqlServer% -u %mysqlUser% -p%mysqlPassword% < %param_volume%\%dataSavePath%\%database_fa300%.sql 2>>%log_path% echo %time% end import basedata %database_fa300% echo. echo %time% end import basedata %database_fa300% >> %log_path% ) if %errorlevel% NEQ 0 ( echo %time% failed to import database:%database_fa300% >> %log_path% set /a tryCount=%tryCount% + 1 goto:importfa300 ) set param_step=8 call:fun_save_param echo %time% end excute step7 >> %log_path% :step8 echo %time% begin excute step8 >> %log_path% call:fun_startmysql :: 导入 scope 库 set tryCount=0 :importscope if %tryCount% EQU 3 ( echo 导入库 %database_scope% 失败 无法继续 请联系软件工程人员 echo. pause exit 0 ) if %database_scope% NEQ null ( echo %time% begin import basedata %database_scope% echo %time% begin import basedata %database_scope% >> %log_path% mysql -h %mysqlServer% -u %mysqlUser% -p%mysqlPassword% < %param_volume%\%dataSavePath%\%database_scope%.sql 2>>%log_path% echo %time% end import basedata %database_scope% echo. echo %time% end import basedata %database_scope% >> %log_path% ) if %errorlevel% NEQ 0 ( echo %time% failed to import database:%database_scope% >> %log_path% set /a tryCount=%tryCount% + 1 goto:importscope ) set param_step=9 call:fun_save_param echo %time% end excute step8 >> %log_path% :step9 echo %time% begin excute step9 >> %log_path% call:fun_startmysql :: 循环导入数组中的表 :importStartLoop if %param_tableIndex% EQU %tableCounts% goto:importEndLoop for /f "usebackq delims==. tokens=1-3" %%i in (`set obj[%param_tableIndex%]`) do ( set curObj.%%j=%%k ) echo %time% begin import table %curObj.table% echo echo %time% begin import table %curObj.table% >> %log_path% set tryCount=0 :importtable if %tryCount% EQU 3 ( echo 导入表 %curObj.table% 错误无法继续，请联系软件工程人员处理 echo. pause exit 0 ) mysql -h %mysqlServer% -u %mysqlUser% -p%mysqlPassword% %database_scope% < %param_volume%\%dataSavePath%\%curObj.table%.sql 2>>%log_path% if %errorlevel% NEQ 0 ( echo %time% failed to import table:%curObj.table% >> %log_path% set /a tryCount=%tryCount%+1 goto:importtable ) echo %time% end import table %curObj.table% echo. echo %time% end import table %curObj.table% >> %log_path% set /a param_tableIndex=%param_tableIndex% + 1 call:fun_save_param goto:importStartLoop :importEndLoop set param_step=10 call:fun_save_param echo %time% end excute step9 >> %log_path% echo ********* imported data successfully *********** echo. :: 校验表是否导入 :step10 echo %time% begin check results echo %time% begin check results >> %log_path% set currentIndex=0 :checkStartLoop if %currentIndex% EQU %tableCounts% goto:checkEndLoop for /f "usebackq delims==. tokens=1-3" %%i in (`set obj[%currentIndex%]`) do ( set curObj.%%j=%%k ) mysql -h %mysqlServer% -u %mysqlUser% -p%mysqlPassword% %database_scope% -e "select %curObj.field% from %curObj.table% limit 1" >>%log_path% 2>&1 if %errorlevel% NEQ 0 ( echo %curObj.table% 表校验失败，请联系软件工程师处理！！！ echo. pause exit 0 ) set /a currentIndex=%currentIndex% + 1 goto:checkStartLoop :checkEndLoop echo %time% end check results echo %time% end check results >> %log_path% echo ******** program executed successfully ******** echo. rename %param_volume%\%dataSavePath% %database_scope%_%var_date% >> %log_path% 2>&1 del /Q/F %process_param% >> %log_path% 2>&1 :: 计算任务执行时间 set end_time=%time% echo end time %end_time% call:fun_time_diff %begin_time%,%end_time% echo total time %excute_h%:%excute_m%:%excute_s% pause :fun_time_diff set param1=%1 set param2=%2 set /a h1=%param1:~0,2% 2>nul set /a m1=1%param1:~3,2% - 100 2>nul set /a s1=1%param1:~6,2% - 100 2>nul set /a h2=%param2:~0,2% 2>nul set /a m2=1%param2:~3,2% - 100 2>nul set /a s2=1%param2:~6,2% - 100 2>nul if %h2% LSS %h1% set /a h2=%h2%+24 set /a ts1=%h1%*3600 + %m1%*60 + %s1% set /a ts2=%h2%*3600 + %m2%*60 + %s2% set /a ts=%ts2% - %ts1% set /a excute_h=%ts%/3600 set /a excute_m=(%ts%-%excute_h%*3600)/60 set /a excute_s=%ts%%%%(60) goto:EOF :fun_save_param echo param_date=%date:~0,10%>%process_param% echo step=%param_step% >>%process_param% echo day=%param_day% >>%process_param% echo volume=%param_volume%>>%process_param% echo ibdataPath=%param_ibdataPath%>>%process_param% echo tableIndex=%param_tableIndex% >>%process_param% goto:EOF :fun_stopmysql tasklist|find /i "mysqld.exe" >> %log_path% 2>&1 if %errorlevel% NEQ 0 goto:EOF if %handwork% EQU 0 goto:stopmysql echo ！！！！！！ 请手动停止mysql 服务，然后继续 ！！！！！！ echo. pause echo. goto:fun_stopmysql ::使用命令停止 mysql 服务 :stopmysql net stop mysql >> %log_path% 2>&1 if %errorlevel% NEQ 0 set handwork=1 goto:fun_stopmysql goto:EOF :fun_startmysql tasklist|find /i "mysqld.exe" >> %log_path% 2>&1 if %errorlevel% EQU 0 goto:EOF if %handwork% EQU 0 goto:startmysql echo ！！！！！！请手动启动 mysql 服务，然后继续！！！！！！ echo. pause echo. goto:fun_startmysql :startmysql net start mysql >> %log_path% 2>&1 if %errorlevel% NEQ 0 set handwork=1 goto:fun_startmysql goto:EOF