Linux（centos）挂载数据盘 linux

查看

fdisk l

Disk /dev/vda: 42.9 GB, 42949672960 bytes, 83886080 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: 0x000a18d3Device BootStartEndBlocksIdSystem /dev/vda120488194047409600082Linux swap / Solaris /dev/vda2*8194048838860793784601683LinuxDisk /dev/vdb: 214.7 GB, 214748364800 bytes, 419430400 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

分区

fdisk /dev/vdb

Welcome to fdisk (util-linux 2.23.2).Changes will remain in memory only, until you decide to write them. Be careful before using the write command.Device does not contain a recognized partition table Building a new DOS disklabel with disk identifier 0x60f2f992.Command (m for help): n Partition type: pprimary (0 primary, 0 extended, 4 free) eextended Select (default p): p Partition number (1-4, default 1): 1 First sector (2048-419430399, default 2048): Using default value 2048 Last sector, +sectors or +size{K,M,G} (2048-419430399, default 419430399): Using default value 419430399 Partition 1 of type Linux and of size 200 GiB is setCommand (m for help): wq The partition table has been altered!Calling ioctl() to re-read partition table. Syncing disks.

格式化

mkfs.ext4 /dev/vdb1

mke2fs 1.42.9 (28-Dec-2013) Filesystem label= OS type: Linux Block size=4096 (log=2) Fragment size=4096 (log=2) Stride=0 blocks, Stripe width=0 blocks 13107200 inodes, 52428544 blocks 2621427 blocks (5.00%) reserved for the super user First data block=0 Maximum filesystem blocks=2199912448 1600 block groups 32768 blocks per group, 32768 fragments per group 8192 inodes per group Superblock backups stored on blocks: 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208, 4096000, 7962624, 11239424, 20480000, 23887872Allocating group tables: done Writing inode tables: done Creating journal (32768 blocks): done Writing superblocks and filesystem accounting information: done

添加分区信息

echo '/dev/vdb1 /opt ext4 defaults 0 0' >> /etc/fstab

挂载

mount -a

查看挂载结果

df -h

FilesystemSizeUsed Avail Use% Mounted on /dev/vda236G1.9G32G6% / devtmpfs16G016G0% /dev tmpfs16G016G0% /dev/shm tmpfs16G8.4M16G1% /run tmpfs16G016G0% /sys/fs/cgroup tmpfs3.2G03.2G0% /run/user/0 /dev/vdb1197G61M187G1% /opt