Raid linear,0,1,5 복구해보기

 

raid5, raid1만 살아있음..

 

raid1, raid5 상태보기

mdadm --detail /dev/md1
mdadm --detail /dev/md5

raid1 상태

raid5 상태

강제로 정상이 아닌 raid-linear run해봐서 상태값

 

재부팅하기위해 /etc/fstab 에 md9, md0부분 주석처리

 

md0,md9는 stop처리해주기

---

 

지운 디스크4개를 다시 추가해준다

 

수동으로 복구작업

 

sdc,sdd,sdf,sdi는 sdb1처럼 1이 없어 파티션을 나눠줘야함.

 

fdisk /dev/sdc
n
p
1
enter
enter
t
fd
w

 

새로만들어준다 linear, raid0는 복구가안되기 때문이다.

mdadm --stop /dev/md9
mdadm --create /dev/md9 --level=linear --raid-devices=2 /dev/sdb1 /dev/sdc1


mdadm: /dev/sdb1 appears to be part of a raid array:
       level=linear devices=2 ctime=Thu Nov  9 00:58:29 2023
Continue creating array? y

raid1, raid5 디스크 추가해주기

mdadm /dev/md1 --add /dev/sdf1
mdadm /dev/md5 --add /dev/sdi1

 

reboot전 세팅확인

[root@localhost ~]# mdadm --detail -scan
ARRAY /dev/md5 metadata=1.2 name=localhost.localdomain:5 UUID=cfcf4811:ed6a4367:a84da2e6:7c7199e8
ARRAY /dev/md1 metadata=1.2 name=localhost.localdomain:1 UUID=e4019d5c:349685d7:83f3ee7e:28498a12
ARRAY /dev/md9 metadata=1.2 name=localhost.localdomain:9 UUID=8ac2ba33:84148ffc:c9fb9055:c764d52b
ARRAY /dev/md0 metadata=1.2 name=localhost.localdomain:0 UUID=1ba99295:81f6b3bc:4daf86d0:ed638dcc
[root@localhost ~]# mdadm --detail -scan > /etc/mdadm.conf 
[root@localhost ~]# cat /etc/mdadm.conf 
ARRAY /dev/md5 metadata=1.2 name=localhost.localdomain:5 UUID=cfcf4811:ed6a4367:a84da2e6:7c7199e8
ARRAY /dev/md1 metadata=1.2 name=localhost.localdomain:1 UUID=e4019d5c:349685d7:83f3ee7e:28498a12
ARRAY /dev/md9 metadata=1.2 name=localhost.localdomain:9 UUID=8ac2ba33:84148ffc:c9fb9055:c764d52b
ARRAY /dev/md0 metadata=1.2 name=localhost.localdomain:0 UUID=1ba99295:81f6b3bc:4daf86d0:ed638dcc
[root@localhost ~]# vi /etc/fstab 
[root@localhost ~]# ls /raid*

 

 

리부트 후 잘 됬는지 확인

[root@localhost ~]# df -h
Filesystem      Size  Used Avail Use% Mounted on
devtmpfs        1.5G     0  1.5G   0% /dev
tmpfs           1.5G     0  1.5G   0% /dev/shm
tmpfs           589M  8.9M  580M   2% /run
/dev/sda2        76G  5.7G   71G   8% /
/dev/md0        2.0G   24K  1.9G   1% /raid0
/dev/md1        988M   24K  921M   1% /raid1
/dev/md9        2.9G  123M  2.6G   5% /raid9
/dev/md5        2.0G   24K  1.9G   1% /raid5
tmpfs           295M   56K  295M   1% /run/user/42
tmpfs           295M   40K  295M   1% /run/user/0
[root@localhost ~]# mdadm --detail /dev/md0
/dev/md0:
           Version : 1.2
     Creation Time : Thu Nov  9 02:24:42 2023
        Raid Level : raid0
        Array Size : 2091008 (2042.00 MiB 2141.19 MB)
      Raid Devices : 2
     Total Devices : 2
       Persistence : Superblock is persistent

       Update Time : Thu Nov  9 02:24:42 2023
             State : clean 
    Active Devices : 2
   Working Devices : 2
    Failed Devices : 0
     Spare Devices : 0

            Layout : -unknown-
        Chunk Size : 512K

Consistency Policy : none

              Name : localhost.localdomain:0  (local to host localhost.localdomain)
              UUID : 1ba99295:81f6b3bc:4daf86d0:ed638dcc
            Events : 0

    Number   Major   Minor   RaidDevice State
       0       8      161        0      active sync   /dev/sdk1
       1       8       49        1      active sync   /dev/sdd1
[root@localhost ~]# mdadm --detail /dev/md9
/dev/md9:
           Version : 1.2
     Creation Time : Thu Nov  9 02:23:48 2023
        Raid Level : linear
        Array Size : 3139584 (2.99 GiB 3.21 GB)
      Raid Devices : 2
     Total Devices : 2
       Persistence : Superblock is persistent

       Update Time : Thu Nov  9 02:23:48 2023
             State : clean 
    Active Devices : 2
   Working Devices : 2
    Failed Devices : 0
     Spare Devices : 0

          Rounding : 0K

Consistency Policy : none

              Name : localhost.localdomain:9  (local to host localhost.localdomain)
              UUID : 8ac2ba33:84148ffc:c9fb9055:c764d52b
            Events : 0

    Number   Major   Minor   RaidDevice State
       0       8       17        0      active sync   /dev/sdb1
       1       8       33        1      active sync   /dev/sdc1
[root@localhost ~]# mdadm --detail /dev/md5
/dev/md5:
           Version : 1.2
     Creation Time : Thu Nov  9 01:00:49 2023
        Raid Level : raid5
        Array Size : 2091008 (2042.00 MiB 2141.19 MB)
     Used Dev Size : 1045504 (1021.00 MiB 1070.60 MB)
      Raid Devices : 3
     Total Devices : 3
       Persistence : Superblock is persistent

       Update Time : Thu Nov  9 02:29:18 2023
             State : clean 
    Active Devices : 3
   Working Devices : 3
    Failed Devices : 0
     Spare Devices : 0

            Layout : left-symmetric
        Chunk Size : 512K

Consistency Policy : resync

              Name : localhost.localdomain:5  (local to host localhost.localdomain)
              UUID : cfcf4811:ed6a4367:a84da2e6:7c7199e8
            Events : 49

    Number   Major   Minor   RaidDevice State
       0       8      129        0      active sync   /dev/sdi1
       1       8      145        1      active sync   /dev/sdj1
       3       8      113        2      active sync   /dev/sdh1
[root@localhost ~]# mdadm --detail /dev/md1
/dev/md1:
           Version : 1.2
     Creation Time : Thu Nov  9 01:00:28 2023
        Raid Level : raid1
        Array Size : 1046528 (1022.00 MiB 1071.64 MB)
     Used Dev Size : 1046528 (1022.00 MiB 1071.64 MB)
      Raid Devices : 2
     Total Devices : 2
       Persistence : Superblock is persistent

       Update Time : Thu Nov  9 02:29:18 2023
             State : clean 
    Active Devices : 2
   Working Devices : 2
    Failed Devices : 0
     Spare Devices : 0

Consistency Policy : resync

              Name : localhost.localdomain:1  (local to host localhost.localdomain)
              UUID : e4019d5c:349685d7:83f3ee7e:28498a12
            Events : 48

    Number   Major   Minor   RaidDevice State
       0       8       65        0      active sync   /dev/sde1
       2       8       81        1      active sync   /dev/sdf1