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mdadm raid0 구성하기

· 2012-04-26 (목) 23:34:00 · 2979
 # 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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