RHEL6 use udev to modify the asm disk name

RHEL6 uses udev to modify the asm disk name. The current system uses emc power Multi-path software, and the disk name changes after the restart. to standardize the use of the asm disk, you need to use udev to fix the disk name. The specific steps are as follows: You can create a node under rac. Change the method of one node to 1, disable oracle Database 2, and modify asm_diskstring under ASM, originally, this parameter was set to/dev/emcpower * 1 alter system set asm_diskstring = '/dev/asmdisks/asm *' scope = spfile sid = '*'; 3, to modify the udev ing file, you need to add several lines of files like KERNEL = "emcpower * 1", SUBSYSTEM = "block ", PROGRAM = "/sbin/scsi_id -- whitelisted -- replace-whitespace -- device =/dev/$ name", RESULT = "360000970000295900314533030344131", NAME + = "asmdisks/asmarch0000 ", ACTION = "add | change", OWNER = "grid", GROUP = "asmadmin", MODE = "0660" KERNEL = "emcpower * 1 ", SUBSYSTEM = "block", PROGRAM = "/sbin/scsi_id -- whitelisted -- replace-whitespace -- device =/dev/$ name", RESULT = "360000970000295900314533030344130 ", NAME + = "asmdisks/asmarch0001", ACTUIB = "add | change", OWNER = "grid", GROUP = "asmadmin ", MODE = "0660" KERNEL = "emcpower * 1", SUBSYSTEM = "block ", PROGRAM = "/sbin/scsi_id -- whitelisted -- replace-whitespace -- device =/dev/$ name", RESULT = "360000970000295900314533030343834", NAME + = "asmdisks/asmdata0000 ", ACTUIB = "add | change", OWNER = "grid", GROUP = "asmadmin", MODE = "0660 "............. 4, run start_udev to make the disk take effect. [oracle @ brief asmdisks] $ please wait until there are too many temporary disks attached asmtemp0002 then asmdata0003 asmdata0014 asmdata0018 then there are too many temporary connections attached to the disk please refer to asmtemp0000 asmtemp0004 when asmdata0012 asmdata0016 when there are too many when asmtemp0001 asmtemp0005 asmundo0003 [oracle @ sdcmpdb1 asmdisks] $ pwd/dev/asmdisks5, restart asm and database.