求助各位大佬，分区扩容问题

Disk /dev/sda: 130 GiB, 139586437120 bytes, 272629760 sectors Disk model: QEMU HARDDISK    Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: 0D72F47C-06AB-4E96-8588-1FAF21DFA2DD Device       Start       End   Sectors Size Type /dev/sda1     2048      4095      2048   1M BIOS boot /dev/sda2     4096   4198399   4194304   2G Linux filesystem /dev/sda3  4198400 167770111 163571712  78G Linux filesystem Disk /dev/mapper/ubuntu–vg-ubuntu–lv: 39 GiB, 41871736832 bytes, 81780736 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 复制代码 磁盘有130GB sda1 sda2 sda3 加起来也不到130GB啊 我想扩容/dev/sda3 ， 有办法吗