分区没有使用完整的空间。

Question

sda5分区有1953年的GB，但是dev/mapper/MediaServer--vg-root实际上只使用496 GB。如何扩展dev/mapper/MediaServer--vg-root以充分利用空间？

sudo fdisk -l

Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x000a9ebd

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      499711      248832   83  Linux
/dev/sda2          501758  3907028991  1953263617    5  Extended
Partition 2 does not start on physical sector boundary.
/dev/sda5          501760  3907028991  1953263616   8e  Linux LVM

Disk /dev/mapper/MediaServer--vg-root: 495.9 GB, 495909339136 bytes
255 heads, 63 sectors/track, 60290 cylinders, total 968572928 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/MediaServer--vg-root doesn't contain a valid partition table

Disk /dev/mapper/MediaServer--vg-swap_1: 3883 MB, 3883925504 bytes
255 heads, 63 sectors/track, 472 cylinders, total 7585792 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x00000000

Disk /dev/mapper/MediaServer--vg-swap_1 doesn't contain a valid partition table

Answer 1

您可以运行lv可扩展性来增加逻辑卷的大小：

sudo lvextend /dev/mapper/MediaServer--vg-root

您还需要扩展文件集以利用新的空间。对于ext2 2/3/4文件系统，运行：

sudo resize2fs /dev/mapper/MediaServer--vg-root

如果您正在运行一个现代版本的Linux，您应该能够在网上完成所有这些操作。标准警告适用于处理存储和数据丢失的可能性。备份重要文件，并谨慎行事。

如果这不起作用，那么很高兴看到您的lvm结构。这将提供一些有用的调试信息：

sudo pvdisplay 
sudo vgdisplay
sudo lvdisplay