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1、首先在安装oracleRAC的前提条件是有共享存储且配置必要的共享盘的规则。
以下是配置示例
[root@ora-11gdb1 ~]# udevadm info --query=all --name=/dev/sdb
P: /devices/pci0000:00/0000:00:15.0/0000:03:00.0/host0/target0:0:1/0:0:1:0/block/sdb
N: sdb
S: disk/by-path/pci-0000:03:00.0-scsi-0:0:1:0
E: DEVLINKS=/dev/disk/by-path/pci-0000:03:00.0-scsi-0:0:1:0
E: DEVNAME=/dev/sdb
E: DEVPATH=/devices/pci0000:00/0000:00:15.0/0000:03:00.0/host0/target0:0:1/0:0:1:0/block/sdb
E: DEVTYPE=disk
E: ID_BUS=scsi
E: ID_MODEL=Virtual_disk
E: ID_MODEL_ENC=Virtual/x20disk/x20/x20/x20/x20
E: ID_PATH=pci-0000:03:00.0-scsi-0:0:1:0
E: ID_PATH_TAG=pci-0000_03_00_0-scsi-0_0_1_0
E: ID_REVISION=2.0
E: ID_SCSI=1
E: ID_TYPE=disk
E: ID_VENDOR=VMware
E: ID_VENDOR_ENC=VMware/x20/x20
E: MAJOR=8
E: MINOR=16
E: MPATH_SBIN_PATH=/sbin
E: SUBSYSTEM=block
E: TAGS=:systemd:
E: USEC_INITIALIZED=94740
使用udevadm info --query=all --name=/dev/sdb 命令来查看LUN设备的信息，以便我们使用udev规则来绑定
配置UDEV 规则
ACTION=="add|change", KERNEL=="sd*", ENV{ID_BUS}=="scsi", ENV{ID_MODEL}=="Virtual_disk", ENV{ID_PATH}=="pci-0000:03:00.0-scsi-0:0:1:0", SYMLINK+="oracleasm/disks/DISK01", GROUP="asmadmin", OWNER="grid", MODE="0660"
ACTION=="add|change", KERNEL=="sd*", ENV{ID_BUS}=="scsi", ENV{ID_MODEL}=="Virtual_disk", ENV{ID_PATH}=="pci-0000:03:00.0-scsi-0:0:2:0", SYMLINK+="oracleasm/disks/DISK02", GROUP="asmadmin", OWNER="grid", MODE="0660"
ACTION=="add|change", KERNEL=="sd*", ENV{ID_BUS}=="scsi", ENV{ID_MODEL}=="Virtual_disk", ENV{ID_PATH}=="pci-0000:03:00.0-scsi-0:0:3:0", SYMLINK+="oracleasm/disks/DISK03", GROUP="asmadmin", OWNER="grid", MODE="0660"
ACTION=="add|change", KERNEL=="sd*", ENV{ID_BUS}=="scsi", ENV{ID_MODEL}=="Virtual_disk", ENV{ID_PATH}=="pci-0000:03:00.0-scsi-0:0:4:0", SYMLINK+="oracleasm/disks/DISK04", GROUP="asmadmin", OWNER="grid", MODE="0660"
ACTION=="add|change", KERNEL=="sd*", ENV{ID_BUS}=="scsi", ENV{ID_MODEL}=="Virtual_disk", ENV{ID_PATH}=="pci-0000:03:00.0-scsi-0:0:5:0", SYMLINK+="oracleasm/disks/DISK05", GROUP="asmadmin", OWNER="grid", MODE="0660"
生效：
重新加载udev规则
udevadm control --reload-rules
触发udev事件以便新规则生效
udevadm trigger
查看oracle asm磁盘
ls -lrt /dev/oracleasm/disks/*
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如何配置oracle-ASM磁盘组规则
