environment
RHEL6|RHEL7，LVM2，RAW device
1. Edit /etc/udev/rules.d/60-raw.rules and add the following:
ACTION!="add|change", GOTO="raw_end"
# Create raw character device mapping:
ENV{DM_VG_NAME}=="vgoradata", ENV{DM_LV_NAME}=="lv_5G_1", RUN+="/bin/raw /dev/raw/raw1 %N"
ENV{DM_VG_NAME}=="vgoradata", ENV{DM_LV_NAME}=="lv_5G_2", RUN+="/bin/raw /dev/raw/raw2 %N"
ENV{DM_VG_NAME}=="vgoradata", ENV{DM_LV_NAME}=="lv_5G_3", RUN+="/bin/raw /dev/raw/raw3 %N"
# To set permissions:
KERNEL=="raw*", OWNER:="grid", GROUP:="asmadmin", MODE:="0660" LABEL="raw_end
2. Putting the rules into effect
udevadm control --reload-rules
udevadm trigger --type=devices --action=change
3. View the results
# raw -qa
/dev/raw/raw1: bound to major 253, minor 0
/dev/raw/raw2: bound to major 253, minor 1
/dev/raw/raw3: bound to major 253, minor 2
# vs -o +lv_kernel_major,lv_kernel_minor
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert KMaj KMin
lv_5G_1 vgoradata -wi-a----- 2.00g 253 0
lv_5G_2 vgoradata -wi-a----- 2.00g 253 1
lv_5G_3 vgoradata -wi-a----- 2.00g 253 2
refer to