在linux 6.x 中，安装RAC 时需要配置UDEV 进行持久化：

[root@rac01 udev] cat 99-oracle-asmdevices.rules

KERNEL=="sd*",ENV{DEVTYPE}=="disk",SUBSYSTEM=="block",PROGRAM=="/usr/lib/udev/scsi_id -g -u -d $devnode",RESULT=="1ATA_VBOX_HARDDISK_VB90ea2842-3d5cfe18", RUN+="/bin/sh -c 'mknod /dev/asmdiskb b  $major $minor; chown grid:asmadmin /dev/asmdiskb; chmod 0660 /dev/asmdiskb'"

KERNEL=="sd*",ENV{DEVTYPE}=="disk",SUBSYSTEM=="block",PROGRAM=="/usr/lib/udev/scsi_id -g -u -d $devnode",RESULT=="1ATA_VBOX_HARDDISK_VB0c31ed82-ca3c7a2f", RUN+="/bin/sh -c 'mknod /dev/asmdiskc b  $major $minor; chown grid:asmadmin /dev/asmdiskc; chmod 0660 /dev/asmdiskc'"

KERNEL=="sd*",ENV{DEVTYPE}=="disk",SUBSYSTEM=="block",PROGRAM=="/usr/lib/udev/scsi_id -g -u -d $devnode",RESULT=="1ATA_VBOX_HARDDISK_VBd2eba70f-9707444e", RUN+="/bin/sh -c 'mknod /dev/asmdiskd b  $major $minor; chown grid:asmadmin /dev/asmdiskd; chmod 0660 /dev/asmdiskd'"

KERNEL=="sd*",ENV{DEVTYPE}=="disk",SUBSYSTEM=="block",PROGRAM=="/usr/lib/udev/scsi_id -g -u -d $devnode",RESULT=="1ATA_VBOX_HARDDISK_VB15946091-75f9c0f4", RUN+="/bin/sh -c 'mknod /dev/asmdiske b  $major $minor; chown grid:asmadmin /dev/asmdiske; chmod 0660 /dev/asmdiske'"

KERNEL=="sd*",ENV{DEVTYPE}=="disk",SUBSYSTEM=="block",PROGRAM=="/usr/lib/udev/scsi_id -g -u -d $devnode",RESULT=="1ATA_VBOX_HARDDISK_VBac950c6b-de84431c", RUN+="/bin/sh -c 'mknod /dev/asmdiskf b  $major $minor; chown grid:asmadmin /dev/asmdiskf; chmod 0660 /dev/asmdiskf'"

配置完UDEV 后需要执行:

start_udev

来让配置生效。

但在linux 7.x 中已经没有start_udev命令，在配置完UDEV 后，需要执行：

[root@rac01 udev]# /sbin/udevadm trigger --type=devices --action=change

或者：

[root@rac01 udev]#  /sbin/udevadm control --reload

[root@rac01 udev]# ll /dev/asm*

lrwxrwxrwx 1 root root 4 Mar  6 06:46 /dev/asm-diskc -> sdc1

lrwxrwxrwx 1 root root 4 Mar  6 06:46 /dev/asm-diskd -> sdd1

lrwxrwxrwx 1 root root 4 Mar  6 06:46 /dev/asm-diske -> sde1

lrwxrwxrwx 1 root root 4 Mar  6 06:46 /dev/asm-diskf -> sdf1

lrwxrwxrwx 1 root root 4 Mar  6 06:46 /dev/asm-diskg -> sdg1

[root@rac01 udev]# 

如果没变，就只能重启系统了。