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调整/扩展分区大小 CentOS

tag-icon • tag-icon centos6 partition hard-drive
调整/扩展分区大小 CentOS

我的任务是调整远程服务器上分区的大小。我已经阅读了相关内容，并了解到我需要卸载并使用resize2fs /dev/sda来扩展分区大小。有人可以帮我卸载分区或指导我完成此操作吗？设置详情如下：

更新，磁盘空间现在为 200gb，但仍然需要帮助将分区扩展到其最大大小

fdisk -l

输出

   Disk /dev/sda: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00080e9a

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          64      512000   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2              64        2611    20458496   8e  Linux LVM

Disk /dev/mapper/vg_livecd-lv_root: 18.8 GB, 18832424960 bytes
255 heads, 63 sectors/track, 2289 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/vg_livecd-lv_root doesn't contain a valid partition table

Disk /dev/mapper/vg_livecd-lv_swap: 2113 MB, 2113929216 bytes
255 heads, 63 sectors/track, 257 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/vg_livecd-lv_swap doesn't contain a valid partition table

和

df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_livecd-lv_root
                       18G  2.8G   15G  17% /
tmpfs                1004M     0 1004M   0% /dev/shm
/dev/sda1             485M   33M  427M   8% /boot

答案1

在大多数情况下，您可以在线调整文件系统大小，无需将其卸载。

看起来您正在使用 LVM，因此从高层次来看您的步骤是：

  • 向磁盘添加另一个 LVM 分区
  • 将此分区作为物理卷添加到卷组
  • 调整逻辑卷的大小
  • 使用 resize2fs 将文件系统扩展到新的大小

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