RAID 0,

++++++++++++  생성

[root@localhost ~]# mdadm --create /dev/md0 --level=0  --raid-devices=2 /dev/sdd1  /dev/sde1
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md0 started.

+++++++++++ 확인

[root@localhost ~]# mdadm --detail /dev/md0
/dev/md0:
        Version : 1.2
  Creation Time : Sun Mar 26 20:00:52 2017
     Raid Level : raid0
     Array Size : 2093056 (2044.00 MiB 2143.29 MB)
   Raid Devices : 2
  Total Devices : 2
    Persistence : Superblock is persistent

    Update Time : Sun Mar 26 20:00:52 2017
          State : clean 
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

     Chunk Size : 512K

           Name : localhost.localdomain:0  (local to host localhost.localdomain)
           UUID : 4f8f8f73:44f1e557:5f5688d3:cfa03ad8
         Events : 0

    Number   Major   Minor   RaidDevice State
       0       8       49        0      active sync   /dev/sdd1
       1       8       65        1      active sync   /dev/sde1

+++++++++++ 포멧

[root@localhost ~]# mkfs.ext4 /dev/md0
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=128 blocks, Stripe width=256 blocks
130816 inodes, 523264 blocks
26163 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=536870912
16 block groups
32768 blocks per group, 32768 fragments per group
8176 inodes per group
Superblock backups stored on blocks: 
    32768, 98304, 163840, 229376, 294912

Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done 

+++++++++++   마운트 하기

[root@localhost ~]# mkdir  /raid0
[root@localhost ~]# mount /dev/md0  /raid0
[root@localhost ~]# df
Filesystem          1K-blocks    Used Available Use% Mounted on
/dev/mapper/cl-root  78088956 4696244  73392712   7% /
devtmpfs               917760       0    917760   0% /dev
tmpfs                  933632     144    933488   1% /dev/shm
tmpfs                  933632    9116    924516   1% /run
tmpfs                  933632       0    933632   0% /sys/fs/cgroup
/dev/sda1              508580  170820    337760  34% /boot
tmpfs                  186728      16    186712   1% /run/user/0
/dev/md9              2028336   11412   1895840   1% /raidLinear
/dev/md0              2027408    6144   1900228   1% /raid0
[root@localhost ~]# 

++++++++++  부팅 후에도 자동 마운트 설정

[root@localhost ~]# gedit /etc/fstab

#
# /etc/fstab
# Created by anaconda on Mon Feb 27 22:28:56 2017
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/cl-root     /                       xfs     defaults        0 0
UUID=d2e19957-3300-4d21-ae86-9d13f7fa6dd1 /boot                   xfs     defaults        0 0
/dev/mapper/cl-swap     swap                    swap    defaults        0 0
/dev/md9                    /raidLinear             ext4        defaults         0 0
/dev/md0                    /raid0            ext4        defaults         0 0

 

 

RAID 1

 

++++++++++++  생성

[root@localhost ~]# mdadm --create /dev/md1 --level=1  --raid-devices=2 /dev/sdf1  /dev/sdg1
mdadm: Note: this array has metadata at the start and
    may not be suitable as a boot device.  If you plan to
    store '/boot' on this device please ensure that
    your boot-loader understands md/v1.x metadata, or use
    --metadata=0.90
Continue creating array? y
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md1 started.
[root@localhost ~]# 

+++++++++++ 확인

[root@localhost ~]# mdadm --detail /dev/md1
/dev/md1:
        Version : 1.2
  Creation Time : Sun Mar 26 20:10:07 2017
     Raid Level : raid1
     Array Size : 1046976 (1022.44 MiB 1072.10 MB)
  Used Dev Size : 1046976 (1022.44 MiB 1072.10 MB)
   Raid Devices : 2
  Total Devices : 2
    Persistence : Superblock is persistent

    Update Time : Sun Mar 26 20:10:37 2017
          State : clean 
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           Name : localhost.localdomain:1  (local to host localhost.localdomain)
           UUID : 5fa17fe2:d3066dd8:6281e683:1bfee407
         Events : 17

    Number   Major   Minor   RaidDevice State
       0       8       81        0      active sync   /dev/sdf1
       1       8       97        1      active sync   /dev/sdg1
[root@localhost ~]# 

+++++++++++++++++ 포멧

[root@localhost ~]# mkfs.ext4 /dev/md1
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
65536 inodes, 261744 blocks
13087 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=268435456
8 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks: 
    32768, 98304, 163840, 229376

Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (4096 blocks): done
Writing superblocks and filesystem accounting information: done

[root@localhost ~]# 

++++++++++++ 마운트 하기

[root@localhost ~]# mkdir /raid1
[root@localhost ~]# mount /dev/md1 /raid1
[root@localhost ~]# df
Filesystem          1K-blocks    Used Available Use% Mounted on
/dev/mapper/cl-root  78088956 4696252  73392704   7% /
devtmpfs               917760       0    917760   0% /dev
tmpfs                  933632     144    933488   1% /dev/shm
tmpfs                  933632    9120    924512   1% /run
tmpfs                  933632       0    933632   0% /sys/fs/cgroup
/dev/sda1              508580  170820    337760  34% /boot
tmpfs                  186728      20    186708   1% /run/user/0
/dev/md9              2028336   11412   1895840   1% /raidLinear
/dev/md0              2027408    6144   1900228   1% /raid0
/dev/md1              1014104    2564    942808   1% /raid1
[root@localhost ~]# 

++++++++++  부팅 후에도 자동 마운트 설정

#
# /etc/fstab
# Created by anaconda on Mon Feb 27 22:28:56 2017
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/cl-root     /                       xfs     defaults        0 0
UUID=d2e19957-3300-4d21-ae86-9d13f7fa6dd1 /boot                   xfs     defaults        0 0
/dev/mapper/cl-swap     swap                    swap    defaults        0 0
/dev/md9                    /raidLinear             ext4        defaults         0 0
/dev/md0                    /raid0            ext4        defaults         0 0
/dev/md1                    /raid1            ext4        defaults         0 0

 

 

 

RAID 5

 

++++++++++++  생성

[root@localhost ~]# mdadm --create /dev/md5  --level=5  --raid-devices=3 /dev/sdh1  /dev/sdi1  /dev/sdj1
mdadm: Defaulting to version 1.2 metadata
mdadm: array /dev/md5 started.
[root@localhost ~]# 

+++++++++++ 확인

[root@localhost ~]# mdadm --detail /dev/md5
/dev/md5:
        Version : 1.2
  Creation Time : Sun Mar 26 20:17:14 2017
     Raid Level : raid5
     Array Size : 2093056 (2044.00 MiB 2143.29 MB)
  Used Dev Size : 1046528 (1022.00 MiB 1071.64 MB)
   Raid Devices : 3
  Total Devices : 3
    Persistence : Superblock is persistent

    Update Time : Sun Mar 26 20:17:50 2017
          State : clean 
 Active Devices : 3
Working Devices : 3
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : localhost.localdomain:5  (local to host localhost.localdomain)
           UUID : aa16cf8a:7955c1d8:42832874:6a864fdd
         Events : 18

    Number   Major   Minor   RaidDevice State
       0       8      113        0      active sync   /dev/sdh1
       1       8      129        1      active sync   /dev/sdi1
       3       8      145        2      active sync   /dev/sdj1
[root@localhost ~]# 

+++++++++++ 포멧

[root@localhost ~]# mkfs.ext4 /dev/md5
mke2fs 1.42.9 (28-Dec-2013)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=128 blocks, Stripe width=256 blocks
130816 inodes, 523264 blocks
26163 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=536870912
16 block groups
32768 blocks per group, 32768 fragments per group
8176 inodes per group
Superblock backups stored on blocks: 
    32768, 98304, 163840, 229376, 294912

Allocating group tables: done                            
Writing inode tables: done                            
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done 

+++++++++++++ 마운트 하기
[root@localhost ~]# mkdir /raid5
[root@localhost ~]# mount /dev/md5 /raid5/
[root@localhost ~]# df
Filesystem          1K-blocks    Used Available Use% Mounted on
/dev/mapper/cl-root  78088956 4701384  73387572   7% /
devtmpfs               917760       0    917760   0% /dev
tmpfs                  933632     144    933488   1% /dev/shm
tmpfs                  933632    9124    924508   1% /run
tmpfs                  933632       0    933632   0% /sys/fs/cgroup
/dev/sda1              508580  170820    337760  34% /boot
tmpfs                  186728      16    186712   1% /run/user/0
/dev/md9              2028336   11412   1895840   1% /raidLinear
/dev/md0              2027408    6144   1900228   1% /raid0
/dev/md1              1014104    2564    942808   1% /raid1
/dev/md5              2027408    6144   1900228   1% /raid5
[root@localhost ~]# 

++++++++++  부팅 후에도 자동 마운트 설정

[root@localhost ~]# gedit /etc/fstab