Linux使用mdadm构建并使用raid阵列

sudo yum install mdadm

# --level=0 选项用于将阵列条带化
sudo mdadm --create --verbose /dev/md0 --level=0 --name=RAID0 --raid-devices=2 /dev/xvdf /dev/xvdg

# 查看md0情况
mdadm --detail /dev/md0

# -L 标签名称
sudo mkfs.ext4 -L mav-raid0 /dev/md0

sudo mdadm --detail --scan | sudo tee -a /etc/mdadm.conf

sudo dracut -H -f /boot/initramfs-$(uname -r).img $(uname -r)

mkdir /mnt/raid
mount LABEL=mav-raid0 /mnt/raid/

sudo cp /etc/fstab /etc/fstab.orig
echo "LABEL=mav-raid0       /mnt/raid   ext4    defaults,nofail        0       2" >> /etc/fstab 

# mount -a 若无输出，即为正常
mount -a

sudo mdadm --detail /dev/RAID-DEVICE

umount /mnt/raid

sudo mdadm --stop /dev/md0

# sudo mdadm --assemble --update=devicesize /dev/RAID-DEVICE LIST-OF-DEVICES
# 请将 RAID-DEVICE 替换为 RAID 配置的映射。请将 LIST-OF-DEVICES 替换为 EBS 卷的设备名称，例如
sudo mdadm --assemble --update=devicesize /dev/md0 /dev/xvdf /dev/xvdg
mdadm --detail /dev/md0 

# sudo mount -t TYPE /dev/RAID-DEVICE /MOUNT-PATH
sudo mount -t ext4 /dev/md0 /mnt/raid/

sudo xfs_growfs /dev/RAID-DEVICE

sudo resize2fs /dev/RAID-DEVICE