Linux学习作业2-3 创建RAID01磁盘阵列
要求：使用/dev/sdX 四块硬盘,创建RAID-01
第一步：添加磁盘
第二步： 创建RAID01
首先创建底层RAID0：
创建第一组RAID0，命名为/dev/md1，使用磁盘/dev/sd[b-c]： [[email protected] ~]# mdadm -Cv /dev/md1 -a yes -n2 -l0 /dev/sdb /dev/sdc mdadm: chunk size defaults to 512K mdadm: Defaulting to version 1.2 metadata mdadm: array /dev/md1 started. [[email protected] ~]#创建第二组RAID0，命名为/dev/md2,使用磁盘/dev/sd[d-e]： [[email protected] ~]# mdadm -Cv /dev/md2 -a yes -n2 -l0 /dev/sdd /dev/sde mdadm: chunk size defaults to 512K mdadm: Defaulting to version 1.2 metadata mdadm: array /dev/md2 started. [[email protected] ~]#
再创建上层RAID1：
创建上层RAID1，命名为/dev/md0，使用磁盘/dev/md1、/dev/md2： [[email protected] ~]# mdadm -Cv /dev/md0 -a yes -n2 -l1 /dev/md1 /dev/md2 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 mdadm: size set to 41877504K Continue creating array? Continue creating array? (y/n) Continue creating array? (y/n) y mdadm: Defaulting to version 1.2 metadata mdadm: array /dev/md0 started. [[email protected] ~]# [[email protected] ~]#
查看创建结果：
上层： [[email protected] ~]# mdadm -D /dev/md0 /dev/md0: Version : 1.2 Creation Time : Wed Mar 20 05:04:07 2019 Raid Level : raid1 Array Size : 41877504 (39.94 GiB 42.88 GB) Used Dev Size : 41877504 (39.94 GiB 42.88 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Wed Mar 20 05:05:25 2019 State : clean, resyncing Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Resync Status : 41% complete Name : localhost.localdomain:0 (local to host localhost.localdomain) UUID : c32b16b5:5476f441:cb82cfe1:699b1f25 Events : 6 Number Major Minor RaidDevice State 0 9 1 0 active sync /dev/md1 1 9 2 1 active sync /dev/md2 [[email protected] ~]#底层： [[email protected] ~]# mdadm -D /dev/md1 /dev/md1: Version : 1.2 Creation Time : Wed Mar 20 04:59:33 2019 Raid Level : raid0 Array Size : 41910272 (39.97 GiB 42.92 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Wed Mar 20 04:59:33 2019 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Chunk Size : 512K Name : localhost.localdomain:1 (local to host localhost.localdomain) UUID : 4e45291e:45d07c68:271cff50:c41a643c Events : 0 Number Major Minor RaidDevice State 0 8 16 0 active sync /dev/sdb 1 8 32 1 active sync /dev/sdc [[email protected] ~]# [[email protected] ~]# mdadm -D /dev/md2 /dev/md2: Version : 1.2 Creation Time : Wed Mar 20 05:01:10 2019 Raid Level : raid0 Array Size : 41910272 (39.97 GiB 42.92 GB) Raid Devices : 2 Total Devices : 2 Persistence : Superblock is persistent Update Time : Wed Mar 20 05:01:10 2019 State : clean Active Devices : 2 Working Devices : 2 Failed Devices : 0 Spare Devices : 0 Chunk Size : 512K Name : localhost.localdomain:2 (local to host localhost.localdomain) UUID : 13a095e0:09ed18d1:05fba38d:faa09dd4 Events : 0 Number Major Minor RaidDevice State 0 8 48 0 active sync /dev/sdd 1 8 64 1 active sync /dev/sde [[email protected] ~]#
第三步：建立文件系统
[[email protected] ~]# mkfs.xfs /dev/md0 meta-data=/dev/md0 isize=512 agcount=16, agsize=654208 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=0, sparse=0 data = bsize=4096 blocks=10467328, imaxpct=25 = sunit=128 swidth=256 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal log bsize=4096 blocks=5112, version=2 = sectsz=512 sunit=8 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 [[email protected] ~]#[[email protected] ~]# lsblk -f /dev/md0 NAME FSTYPE LABEL UUID MOUNTPOINT md0 xfs 4e2957bf-ee04-4fe0-8bbc-a562b459874a [[email protected] ~]#
第四步：挂载使用
[[email protected] ~]# mkdir /myraid01 [[email protected] ~]# [[email protected] ~]# mount /dev/md0 /myraid01/ [[email protected] ~]#[[email protected] ~]# df -hT /dev/md0 Filesystem Type Size Used Avail Use% Mounted on /dev/md0 xfs 40G 33M 40G 1% /myraid01 [[email protected] ~]#