有一台主机，3个4T盘和1个8T盘做成raid0 安装操作系统。
按我之前的认知，raid0 容量应该是N*最小的raid分区容量
但是这个系统上，raid0 容量是多个raid分区相加，这是啥原因呢？
请看根目录
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 3.6T 0 disk
+-sda1 8:1 0 487M 0 part
+-sda2 8:2 0 954M 0 part
+-md0 9:0 0 953M 0 raid1 /boot
+-sda3 8:3 0 3.6T 0 part
+-md1 9:1 0 18.2T 0 raid0 /
+-sda4 8:4 0 7.6G 0 part
+-md2 9:2 0 30.5G 0 raid0 [SWAP]
sdb 8:16 0 3.6T 0 disk
+-sdb1 8:17 0 487M 0 part
+-sdb2 8:18 0 954M 0 part
+-md0 9:0 0 953M 0 raid1 /boot
+-sdb3 8:19 0 3.6T 0 part
+-md1 9:1 0 18.2T 0 raid0 /
+-sdb4 8:20 0 7.6G 0 part
+-md2 9:2 0 30.5G 0 raid0 [SWAP]
sdc 8:32 0 7.3T 0 disk
+-sdc1 8:33 0 487M 0 part
+-sdc2 8:34 0 954M 0 part
+-md0 9:0 0 953M 0 raid1 /boot
+-sdc3 8:35 0 7.3T 0 part
+-md1 9:1 0 18.2T 0 raid0 /
+-sdc4 8:36 0 7.6G 0 part
+-md2 9:2 0 30.5G 0 raid0 [SWAP]
sdd 8:48 0 3.6T 0 disk
+-sdd1 8:49 0 487M 0 part /boot/efi
+-sdd2 8:50 0 954M 0 part
+-md0 9:0 0 953M 0 raid1 /boot
+-sdd3 8:51 0 3.6T 0 part
+-md1 9:1 0 18.2T 0 raid0 /
+-sdd4 8:52 0 7.6G 0 part
+-md2 9:2 0 30.5G 0 raid0 [SWAP]
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FROM 116.230.28.*