Raid linear,0,1,5 복구해보기
2023. 11. 9. 02:31ㆍ리눅스/모던 리눅스 관리
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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
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