??Oracle ASMLIB?????? 
   ?????????linux??????oracle?asmlib?????????,?????????????,????????????????????????????????????????" multipatha",???????? 
  ??????????: ???????????,???????????:ASM??????2??????,????????????????????????3?,?: 
   ????????
  ???????? 
   ????????????? 
    
  ???????:?????????????,?/ dev/ sda?,?????????????.?????2?????????????????? 
  Linux?SCSI????????????????????/dev/sdb?/dev/sdc.??????sdb??sdc?????????? 
  ??,???????????????,???????????????? ,?/dev/multipatha,?????????????,????,??I/ O??multipatha????????????????????????sdb??,?????????????,????????????multipath?????????sdc?????????? 
  ????????????????????,???????????:sdb??sdc???multpatha,??????????????ASMLIB???,??????,ASMLIB?????????????? 
  ASMLIB???,??????????,??ASM????????????????????????????ASM????????,?????????? 
  ??????????:ASM??????????? 
  ??????,ASMLIB????????????.Linux???????????,?????????????,????multipath ?????????? 
  ???????ASMLIB??????????!??Oracle?????,?????????? 
  ?????,????,??????ASMLIB??????????????????,??????????????: 
  ??????: 
      ASMLIB???ASMLIB???????????????ASMLIB??????ASMLIB?????????????????????????ASMLIB??????????????????,???????????/etc/init.d/oracleasm scandisks????????????ASMLIB????????????????????????????asmlib???,???????????ASMLIB????,?????,ASMLIB??OS????????????,????OS??????????  
   ????????,???????OS?????????????????ASMLIB?????????????????????????ASMLIB?????????????,?????Oracle??? 
  ASMLib??????????????????????,???????????????????????,ASMLib?????????????,?????????????????.????????????????????????? 
      ??????????????????,??????????????????????,??ASMLib?????,?????????????????????????????????ASMLib???????????,??????????? 
    
  ???????: 
  ASMLib?????????/etc/sysconfig/oracleasm.???????/etc/sysconfig/oracleasm-_dev_oracleasm ???????????????????????????/etc/init.d/oracleasm configure ???????????,?????????????? 
  ???????????????? 
  ORACLEASM_SCANORDER ??????????????; 
  ORACLEASM_SCANEXCLUDE????????????????????; 
  ???????????????????.???,????????????????,?????????,?????sd???????SCSI??????????????.??????????,??????????????? /dev/ ?????????????? 
  ??:???????,?????????????????????device-mapper???,????????/dev/dm-XX??/dev/mapper/XXX???????udev???????????????ORACLEASM_SCANORDER ?? ORACLEASM_SCANEXCLUDE???? dm ????? 
  ???????: 
  ??:?????????/etc/sysconfig/oracleasm,????????????/etc/sysconfig/oracleasm-_dev_oracleasm???? 
  ?????????: 
  ???????ASMLib??????????????,?ASMLib??????,??ORACLEASM_SCANORDER??,????:  
  ORACLEASM_SCANORDER="multipath sd" 
  ??,???????,ASMLib??????"multipath"????????????/dev/multipatha ?????????????????????ASMLib?????"sd"?????????SCSI????????/dev/sda?????,???????ASM???? 
  ??????/dev/sdb?/dev/sdc??????,???ASM???,??ASMLib ????????????????ASMLib?????????ASMLib??????????????????? 
    
  ????????: 
    
  ?????????ASMLib???????????ASMLib??????,??ORACLEASM_SCANEXCLUDE??,????:  
  ORACLEASM_SCANEXCLUDE="sdb sdc" 
  ??,????????????ASMLib???????????/dev/sdb?/dev/sdc.????????SCSI?????,ASMLib????????????2???,?????/dev/multipath???,??,Oracle?????????? 
  EMC PowerPath ?ASMLib 
  ??????????EMC PowerPatch??????ASMLib?????? 
  ????,PowerPath?2.4 kernels EMC??????Linux??2.6??,?RHEL 4??SLES 9??2.0ASMLib kernel ??????? 
  ??EMC Power Patch???,???EMC Support Matrix????????/?? ??????????? 
  ???????? ASMLib ? PowerPath ?Linux 2.4 Kernel????,?RHEL3 SLES8 ???????,???EMC 
    
  ?: ??????OTN?????: 
  Configuring Oracle ASMLib on Multipath Disks