adam Centos7挂载新磁盘 查看当前分区使用情况： [root@localhost ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/centos-root 38G 890M 37G 3% / devtmpfs 16G 0 16G 0% /dev tmpfs 16G 0 16G 0% /dev/shm tmpfs 16G 49M 16G 1% /run tmpfs 16G 0 16G 0% /sys/fs/cgroup /dev/vda1 497M 123M 375M 25% /boot tmpfs 3.2G 0 3.2G 0% /run/user/0 查看新硬盘 [root@localhost ~]# fdisk -l Disk /dev/vda: 44.0 GB, 44023414784 bytes, 85983232 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk label type: dos Disk identifier: 0x000e2b67 Device Boot Start End Blocks Id System /dev/vda1 * 2048 1026047 512000 83 Linux /dev/vda2 1026048 84303871 41638912 8e Linux LVM Disk /dev/mapper/centos-root: 40.4 GB, 40441479168 bytes, 78987264 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/mapper/centos-swap: 2147 MB, 2147483648 bytes, 4194304 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk /dev/vdb: 1099.5 GB, 1099511627776 bytes, 2147483648 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes 可以看到，新硬盘编号为/dev/vdb
