VM 파티션 크기 재할당하기

[root@sysdocu ~]# fdisk -l

Disk /dev/vda: 134.2 GB, 134217728000 bytes

139 heads, 8 sectors/track, 235741 cylinders

Units = cylinders of 1112 * 512 = 569344 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000594e0

   Device Boot      Start         End      Blocks   Id  System

/dev/vda1               2       47149    26213376   83  Linux

[root@sysdocu ~]# df -Th

Filesystem     Type   Size  Used Avail Use% Mounted on

/dev/vda1      ext4    25G  2.7G   21G  12% /

tmpfs          tmpfs  3.9G   88K  3.9G   1% /dev/shm

[root@sysdocu ~]# fdisk -u /dev/vda

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to

         switch off the mode (command 'c').

Command (m for help): p

Disk /dev/vda: 134.2 GB, 134217728000 bytes

139 heads, 8 sectors/track, 235741 cylinders, total 262144000 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 identifier: 0x000594e0

   Device Boot      Start         End      Blocks   Id  System

/dev/vda1            2048    52428799    26213376   83  Linux

Command (m for help): d

Selected partition 1

Command (m for help): n

Command action

   e   extended

   p   primary partition (1-4)

p

Partition number (1-4): 1

First sector (8-262143999, default 8): 2048    // ★ 중요 : 시작을 2048로 해야 합니다.

Last sector, +sectors or +size{K,M,G} (2048-262143999, default 262143999): 

Using default value 262143999

Command (m for help): p

Disk /dev/vda: 134.2 GB, 134217728000 bytes

139 heads, 8 sectors/track, 235741 cylinders, total 262144000 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 identifier: 0x000594e0

   Device Boot      Start         End      Blocks   Id  System

/dev/vda1            2048   262143999   131070976   83  Linux

Command (m for help): w

The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 16: 장치나 자원이 동작 중.

The kernel still uses the old table. The new table will be used at

the next reboot or after you run partprobe(8) or kpartx(8)

Syncing disks.

[root@sysdocu ~]# reboot