M_LROOT,LD_LIBRARY_PATH, “Not all extension Dlls were loaded”問題原因及解決方法(持續更新）

最近在需要在雲主機上進行壓力測試，所以需要Linux的Agent。

一、安裝：教程可以百度，大概步驟如下：

1、Upload Linux.zip to 指定的機器

2、解壓，chmod 777 $Linux/installer.sh

3、執行Linux下的installer.sh (sudo權限）

按照提示安裝下去即可。

 注：安裝完成后，在/opt/HP/HP_LoadGenerator/bin下所有目錄及子目錄均屬於非root用戶及非root用戶組。如果出現文件夾為root用戶組，文件為bin用戶，則也會出現Not all extension Dlls were loaded的問題，需要重新安裝。

二、環境變量配置（基於bsh）

1、在/opt/HP/HP_LoadGenerator/新增env.sh文件，內容如下：

#!/bin/bsh
export PRODUCT_DIR="/opt/HP/HP_LoadGenerator"
export M_LROOT="/opt/HP/HP_LoadGenerator"
export LD_LIBRARY_PATH=$M_LROOT/bin:$M_LROOT/lib:/usr/lib
export DISPLAY='0.0'
export PATH=$PATH:${M_LROOT}/bin

 2、修改該文件的使用屬性

chmod 777 env.sh

 3、在環境變量中使用該文件,在/etc/profile 和/etc/bashrc 最后加入：

source /opt/HP/HP_LoadGenerator/env.sh

 4、用戶重新登陸，檢查環境變量是否生效

echo $PRODUCT_DIR
echo $M_LROOT
echo $LD_LIBRARY_PATH
echo $PATH

5、執行/opt/HP/HP_LoadGenerator/bin/verify_generator

提示各種glibc缺失，需要自行安裝。最特殊的是glibc++.so.5,需要手動單獨安裝。

特殊說明：此處提示${M_LROOT}，${LD_LIBRART_PATH}找不到時，可以先忽略不管（前提步驟4的結果都正確）。

遇到的問題：

（1）/opt/HP/HP_LoadGenerator/bin/lrv/limithost: /opt/HP/HP_LoadGenerator/bin/lrv/chk_thread_lmt: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory

sudo yum install glibc.i686

 （2）/opt/HP/HP_LoadGenerator/bin/lrv/chk_thread_lmt: error while loading shared libraries: libgcc_s.so.1: cannot open shared object file: No such file or directory
/opt/HP/HP_LoadGenerator/bin/lrv/limithost: line 134: [: : integer expression expected

sudo yum install libgcc-4.4.7-11.el6.i686.rpm

(3)/opt/HP/HP_LoadGenerator/bin/lrv/chk_thread_lmt: error while loading shared libraries: libstdc++.so.5: cannot open shared object file: No such file or directory
/opt/HP/HP_LoadGenerator/bin/lrv/limithost: line 134: [: : integer expression expected

 

sudo yum install compat-libstdc++-33-3.2.3-69.el6.i686

 

 

 

6、關閉防火牆等其他安全通信策略

7、啟動linux agent 進程（在/opt/HP/HP_LoadGenerator/bin/下）。成功后可以看到進程號，如果失敗在/tmp下有個m_daemon***.log 文件去查看失敗原因。

./m_daemon_setup start

 (1)/tmp/m_daemon***.log出現如下報錯：

18/06/2015 11:22:49 Error: Communication error: Failed to get the server host IP by calling the gethostbyname function.    [MsgId: MERR-10344]
18/06/2015 11:22:49 Error: Two Way Communication Error: Function two_way_comm_create_acceptor failed.    [MsgId: MERR-60999]
18/06/2015 11:22:49 Error: Failed to create "launchservice" server.    [MsgId: MERR-29974]
18/06/2015 11:22:49 Warning: Extension liblauncher.so reports error -1 on call to function ExtPerThreadInitialize    [MsgId: MWAR-10485]
18/06/2015 11:22:49 Error: Vuser failed to initialize extension liblauncher.so.    [MsgId: MERR-10700]

• 先看下機器名稱：

# hostname

• 將上步驟獲取的機器名稱寫入/etc/hosts中即可。

 

三、controller連接、場景試跑，報錯：Not all extension Dlls were loaded

 分析：開始以為本地Dll路徑不對，百度一下，HP的論壇里這個問題很多人提問，但回答都說是linux agent的配置錯誤。

 下面就回過頭來看./verify_generator時產生的錯誤並徹底解決他們

 1.${M_LROOT}找不到

 解決 M_LROOT變量找不到的問題修改： /opt/HP/HP_LoadGenerator/bin/lrv/vusrchk中288行,將unset M_LROOT下移到289行后面

269       my_shell="/bin/$my_shell"
270    else
271       temp=`$my_shell -c ' echo MERCURY ' 2> /dev/null`
272       if [ "$temp" = "MERCURY" ];then
273          echo "Failed $trail"
274          remote_install=1
275          echo "_____Failed to run $my_shell. $trail"
276          exit 1
277       fi
278    fi
279 fi
280 
281 if [ $found_ksh != 0 ]; then
282    ENV="$HOME/.profile"
283    export ENV
284 fi
285 
286 echo $ECHO_N  "Verify \$M_LROOT ...$ECHO_C"
287 save_m_lroot="$M_LROOT"
288 #unset M_LROOT
289 temp=`$my_shell -c ' echo MERCURY $M_LROOT ' 2> /dev/null`
290 unset M_LROOT
291 new_m_lroot=`echo $temp | $SED -e 's/.*MERCURY[ ]*\(.*\)/\1/'`
292 
293 if [ "$new_m_lroot" = "" ]; then
294         echo "Failed $trail"
295         remote_install=1
296         echo "_____It was not possible to set the \$M_LROOT from $trail"
297         echo "_____the shell dot files. One of several things might be happening: $trail"
298         echo "_____1) \$M_LROOT is not set at all in the shell dot files. $trail"
299         echo "_____2) There is some error in the shell dot files which stops their execution $trail"
300         echo "_____   before it sets \$M_LROOT. $trail"
301         echo "_____3) There is conditional code in the shell dot files (most likely related to $trail"
302         echo "_____   interactive and non interactive shells) and \$M_LROOT is set $trail"
303         echo "_____   only in one of the sections. $trail"
304         echo "_____Aborting virtual user tests on host `$HOSTNAME` $trail"

 2、找不到${LD_LIBRARY_PATH}

解決LD_LIBRARY_PATH找不到的問題：將/opt/HP/HP_LoadGenerator/bin/lrv/vusrchk中356行,改成357行內容。

    348 case "$os_name" in
    349 HP-UX)
    350    temp=`$my_shell -c ' echo MERCURY $SHLIB_PATH ' 2> /dev/null`
    351    ;;
    352 AIX)
    353    temp=`$my_shell -c ' echo MERCURY $LIBPATH ' 2> /dev/null`
    354    ;;
    355 SunOS|Linux)
    356    #temp=`$my_shell -c ' echo MERCURY $LD_LIBRARY_PATH ' 2> /dev/null`
    357    temp=`$my_shell -c ' echo MERCURY ${M_LROOT}/bin ' 2> /dev/null`
    358    ;;
    359 esac

3、解決找不到libdriver.so的問題

Verify running the product executables...Failed
_____Failed to run the product executables.
_____Error:
mdrv: error while loading shared libraries: libdriver.so: cannot open shared object file: No such file or directory

(1)  先find下，看下libdriver.so所在目錄

[work@presstest3 bin]$ find . -name "libdriver.so"
./libdriver.so
[work@presstest3 bin]$ pwd
/opt/HP/HP_LoadGenerator/bin

(2)將該路徑加入/opt/HP/HP_LoadGenerator/bin/lrv/vusrchk 文件中

修改/opt/HP/HP_LoadGenerator/bin/lrv/vusrchk，在483行處再加入一次這個lib的路徑:export  LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/${M_LROOT}/bin

    469 echo $ECHO_N "Verify that the product executables are run from \$M_LROOT/bin...$ECHO_C"
    470 which_mdrv=`$my_shell -c 'which mdrv' | $AWK  '{which_mdrv=$0} END{print which_mdrv}'`
    471 if [ "$which_mdrv" != "$PRODUCT_DIR/bin/mdrv" ]; then
    472    wrong_path=`echo $which_mdrv | $SED -e 's/\/mdrv//'`
    473    echo "Failed $trail"
    474    remote_install=1
    475    echo "_____The product executables are run from $wrong_path $trail"
    476    echo "_____and not from $PRODUCT_DIR/bin. $trail"
    477    echo "_____Make sure that the PATH environment variable contains $trail"
    478    echo "_____$PRODUCT_DIR/bin before $trail"
    479    echo "_____$wrong_path. $trail"
    480    exit 1
    481 else
    482   echo "OK $trail"
    483 fi
    484 export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/${M_LROOT}/bin
    485 
    486 echo $ECHO_N "Verify running the product executables...$ECHO_C"
    487 rm -f /tmp/verify_mdrv_err.txt
    488 if [ $found_ksh != 0 ]; then
    489    $my_shell -c '(mdrv > /dev/null) 2> /tmp/verify_mdrv_err.txt' > /dev/null
    490 else   
    491    $my_shell -c '(mdrv > /dev/null) >& /tmp/verify_mdrv_err.txt' > /dev/null
    492 fi

 

 

至此./verfify_generator 已可以驗證通過。

啟動： ./m_daemon_setup start 執行成功。

 

四、再次使用Control驗證“Not all extension Dlls were loaded”，該問題消失。

It work！~~~

 

五、總結： 

 M_LROOT、LD_LIBRARY_PATH和libdriver.so找不到，主要原因是LR提供的/opt /HP/HP_LoadGenerator/bin/lrv/vusrchk腳本中代碼存在問題引起.寫在這里，方便各位測試同仁遇到問題時不會無厘頭的到處查問題，少走些彎路。當然我的代碼中使用寫死的辦法完全是“頭痛醫頭，腳痛醫腳”的方法，后續有時間時會繼續針對該代碼進行調整，以解決代碼通用性問題，歡迎各位點贊或拍磚！~