我有4个硬盘，系统安装在/ dev / sda2上
# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda2 884G 2.1G 836G 1% / /dev/sda3 2.0G 159M 1.7G 9% /tmp /dev/sda1 99M 18M 77M 19% /boot tmpfs 7.9G 0 7.9G 0% /dev/shm fdisk -l Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 13 104391 83 Linux /dev/sda2 14 119040 956084377+ 83 Linux /dev/sda3 119041 119301 2096482+ 83 Linux /dev/sda4 119302 121601 18474750 5 Extended /dev/sda5 119302 121601 18474718+ 82 Linux swap / Solaris Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 1 121601 976760001 83 Linux Disk /dev/sdc: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdc1 1 121601 976760001 83 Linux Disk /dev/sdd: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdd1 1 121601 976760001 83 Linux 我想Raid 0全部4个硬盘：
mdadm -C /dev/md0 --level=raid0 --raid-devices=4 /dev/sda2 /dev/sdb1 /dev/sdc1 /dev/sdd1 mdadm: Cannot open /dev/sda2: Device or resource busy mdadm: create aborted
制作4个磁盘条集会增加您丢失数据约4倍的机会。
我怀疑你想做你想做的事情…