centos下如何使用fdisk扩展分区容量大小

扩展磁盘空间

硬盘空间为20G，使用vSphere Client增加磁盘大小，需要再增加10G空间;

扩展完后，重启系统，再次使用fdisk -l查看，会发现硬盘空间变大了；

[root@linuxprobe ~]# fdisk -lDisk /dev/sda: 32.2 GB, 32212254720 bytes255 heads, 63 sectors/track, 3916 cylindersUnits = cylinders of 16065 * 512 = 8225280 bytesSector size (logical/physical): 512 bytes / 512 bytesI/O size (minimum/optimal): 512 bytes / 512 bytesDisk identifier: 0x0005210c   Device Boot      StartEnd      Blocks   Id  System/dev/sda1   *1 26      204800   83  LinuxPartition 1 does not end on cylinder boundary./dev/sda2   26        1301    10240000   83  Linux/dev/sda3 1301        1497     1572864   82  Linux swap / Solaris/dev/sda4 1497        2611     8952832   83  Linux[root@linuxprobe ~]# df -hTFilesystem     Type   Size  Used Avail Use% Mounted on/dev/sda2      ext4   9.7G  1.5G  7.7G  16% /tmpfs tmpfs  939M     0  939M   0% /dev/shm/dev/sda1      ext4   194M   34M  151M  19% /boot/dev/sda4      ext4   8.5G  148M  7.9G   2% /data