mdadm raid0 구성하기
# raid 장치 raid0 create
100M 짜리 파티션 3개 생성함.
/dev/xvda5 1544 1556 104391 83 Linux
/dev/xvda6 1557 1569 104391 83 Linux
/dev/xvda7 1570 1582 104391 83 Linux
partpobe 명령 꼭 내릴것. 아니면 리부팅해야함.
vi /etc/mdadm.conf
DEVICE /dev/xvda[567]
ARRAY /dev/md0 devices=/dev/xvda5,/dev/xvda6,/dev/xvda7
- mdstat 상태 확인
[root@www ~]# cat /proc/mdstat
Personalities :
unused devices: <none>
[root@www ~]# mdadm -C /dev/md0 --level=raid0 --raid-devices=3 /dev/xvda5 /dev/xvda6 /dev/xvda7
mdadm: array /dev/md0 started.
- raid 장치 상태 정보 확인
[root@www ~]# mdadm --detail /dev/md0
/dev/md0:
Version : 0.90
Creation Time : Wed Sep 14 14:59:33 2011
Raid Level : raid0
Array Size : 312960 (305.68 MiB 320.47 MB)
Raid Devices : 3
Total Devices : 3
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Wed Sep 14 14:59:33 2011
State : clean
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Chunk Size : 64K
UUID : 166a3470:bd51073d:6eca3b32:a65ce71e
Events : 0.1
Number Major Minor RaidDevice State
0 202 5 0 active sync /dev/xvda5
1 202 6 1 active sync /dev/xvda6
2 202 7 2 active sync /dev/xvda7
- 포맷 하고 마운트
[root@www ~]# mkfs -j /dev/md0
[root@www ~]# mkdir /data
[root@www ~]# mount /dev/md0 /data
[root@www ~]# df -h
/dev/md0 296M 11M 271M 4% /data
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