1. 멀티패스 생성
defaults {
find_multipaths yes
user_friendly_names yes
}
# make your luns to human readable name
multipaths {
multipath {
wwid 360002ac000000000000000020000f8cc
alias lun1g001
}
multipath {
wwid 360002ac000000000000000030000f8cc
alias lun1g002
}
2. 해당 LUN을 RAW Device로 등록
/etc/udev/rules.d/60-raw.rules
# RAW Device이름은 반드시 rawN 이어야 하며 N > 0 이다.
ACTION=="add|change", ENV{DM_NAME}=="lun1g001", RUN+="/bin/raw /dev/raw/raw1 %N"
ACTION=="add|change", ENV{DM_NAME}=="lun1g002", RUN+="/bin/raw /dev/raw/raw2 %N"
3. 추가적으로 해당 장치 권한을 설정해준다.
/etc/udev/rules.d/12-dm-permission.rules
ENV{DM_UUID}=="mpath-?*", OWNER:="oracle", GROUP:="dba", MODE:="660"
4. 만들어진 RAW Device를 Oracle RAC에 등록하여 사용한다.
1. LVM 구성 확인
[root@localhost mapper]# pvs PV VG Fmt Attr PSize PFree /dev/sda2 centos lvm2 a-- <19.00g 0 /dev/sdb vg_raw lvm2 a-- <20.00g <5.00g [root@localhost mapper]# vgs VG #PV #LV #SN Attr VSize VFree centos 1 2 0 wz--n- <19.00g 0 vg_raw 1 3 0 wz--n- <20.00g <5.00g [root@localhost mapper]# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert root centos -wi-ao---- <17.00g swap centos -wi-ao---- 2.00g raw_1 vg_raw -wi-a----- 5.00g raw_2 vg_raw -wi-a----- 5.00g raw_3 vg_raw -wi-a----- 5.00g
2. raw devices 구성
/etc/udev/rules.d/60-raw.rules
ACTION!="add|change", GOTO="raw_end"
# Create raw character device mapping:
ENV{DM_VG_NAME}=="vg_raw", ENV{DM_LV_NAME}=="raw_1", RUN+="/bin/raw /dev/raw/raw1 %N" // DM_VG_NAME 에는 해당 VG명 , LV_NAME 에는 lv 명 기입
ENV{DM_VG_NAME}=="vg_raw", ENV{DM_LV_NAME}=="raw_2", RUN+="/bin/raw /dev/raw/raw2 %N"
ENV{DM_VG_NAME}=="vg_raw", ENV{DM_LV_NAME}=="raw_3", RUN+="/bin/raw /dev/raw/raw3 %N"
# # To set permissions:
KERNEL=="raw*", OWNER:="root", GROUP:="root", MODE:="0660" // OWNER 와 GROUP 은 접근할 유저를 등록하면된다 (ex: oracle,tibero ..)
LABEL="raw_end"
3. 추가한 rules 시스템에 적용 및 확인
[root@localhost mapper]# udevadm control --reload-rules [root@localhost mapper]# udevadm trigger --type=devices --action=change
[root@localhost mapper]# raw -qa /dev/raw/raw1: bound to major 253, minor 2 /dev/raw/raw2: bound to major 253, minor 3 /dev/raw/raw3: bound to major 253, minor 4 [root@localhost mapper]# lvs -o +lv_kernel_major,lv_kernel_minor LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert KMaj KMin root centos -wi-ao---- <17.00g 253 0 swap centos -wi-ao---- 2.00g 253 1 raw_1 vg_raw -wi-a----- 5.00g 253 2 raw_2 vg_raw -wi-a----- 5.00g 253 3 raw_3 vg_raw -wi-a----- 5.00g 253 4