一, 使用mdadm创建RAID
参考：https://wiki.archlinux.org/index.php/RAID
1. 安装 mdadm
/home/tong [tong@TStation] [:]
> pacman -Ss mdadm
core/mdadm 4.0- (base) [installed]
A tool for managing/monitoring Linux md device arrays, also known as Software RAID
2. 给单盘分区
2.1 GPT分区。
2.2 做好有分区，虽然裸盘也可以。
2.3 分区尾部预留100M的空余，因为：
Even hard drives of the same manufacturer and model can have small size differences. By leaving a little space at the end of the disk unallocated one can
compensate for the size differences between drives, which makes choosing a replacement drive model easier. Therefore, it is good practice to leave
about MB of unallocated space at the end of the disk.
(parted) print free
Model: ATA WDC WD3000FYYZ- (scsi)
Disk /dev/sdc: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: Number Start End Size File system Name Flags
.4kB 1049kB 1031kB Free Space
1049kB 3000GB 3000GB xfs
3000GB 3001GB 105MB Free Space
(parted) print
Model: ATA WDC WD3000FYYZ- (scsi)
Disk /dev/sdd: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: Number Start End Size File system Name Flags
1049kB 3000GB 3000GB
3. 使用mdadm制作RAID
/home/tong [tong@TStation] [:]
> sudo mdadm --create --verbose --level= --metadata=1.2 --raid-devices= /dev/md0 /dev/sdc1 /dev/sdd1
mdadm: size set to 2930030976K
mdadm: automatically enabling write-intent bitmap on large array
mdadm: array /dev/md0 started.
4. 后续详细设置参考:
https://wiki.archlinux.org/index.php/RAID#Installation
二, 使用lvm创建RAID
https://wiki.archlinux.org/index.php/LVM#RAID
0. 使用parted分区。
/home/tong [tong@TStation] [:]
> sudo parted /dev/sdc print
Model: ATA WDC WD3000FYYZ- (scsi)
Disk /dev/sdc: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: Number Start End Size File system Name Flags
2097kB 3000GB 3000GB /home/tong [tong@TStation] [:]
> sudo parted /dev/sdd print
Model: ATA WDC WD3000FYYZ- (scsi)
Disk /dev/sdd: 3001GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: Number Start End Size File system Name Flags
2097kB 3000GB 3000GB
1. 创建物理卷
/home/tong [tong@TStation] [:]
> sudo pvcreate /dev/sdc1 /dev/sdd1
Physical volume "/dev/sdc1" successfully created.
Physical volume "/dev/sdd1" successfully created.
2. 创建卷组
/home/tong [tong@TStation] [:]
> sudo vgcreate VG_storage /dev/sdc1 /dev/sdd1
Volume group "VG_storage" successfully created
3. 创建逻辑卷
more information： https://jlk.fjfi.cvut.cz/arch/manpages/man/lvmraid.7
How LV data blocks are placed onto PVs is determined by the RAID level.
RAID levels are commonly referred to as 'raid' followed by a number, e.g. raid1, raid5 or raid6.
/home/tong [tong@TStation] [:]
> sudo lvcreate --type raid1 -l %FREE -n storage_raid1 VG_storage /dev/sdc1 /dev/sdd1
Logical volume "storage_raid1" created.
/home/tong [tong@TStation] [:]
> sudo lvs -o name,segtype,size
LV Type LSize
storage_raid1 raid1 <.73t
4. 创建文件系统
/home/tong [tong@TStation] [:]
> sudo mkfs.xfs /dev/VG_storage/storage_raid1
meta-data=/dev/VG_storage/storage_raid1 isize= agcount=, agsize= blks
= sectsz= attr=, projid32bit=
= crc= finobt=, sparse=, rmapbt=, reflink=
data = bsize= blocks=, imaxpct=
= sunit= swidth= blks
naming =version bsize= ascii-ci= ftype=
log =internal log bsize= blocks=, version=
= sectsz= sunit= blks, lazy-count=
realtime =none extsz= blocks=, rtextents=
5。 挂载
/home/tong [tong@TStation] [:]
> tail -n /etc/fstab
# /dev/mapper/VG_storage-storage_raid1
UUID=c5b048a0-b376-4a00-9a6f-9a9e418d982b /home/tong/Storage xfs rw,relatime,attr2,inode64,noquota