resize2fs命令是用来增大或者收缩未加载的“ext2/ext3/ext4”文件系统的大小。
The resize2fs program will resize ext2, ext3, or ext4 file systems. It
can be used to enlarge or shrink an unmounted file system located on
device. If the filesystem is mounted, it can be used to expand the
size of the mounted filesystem, assuming the kernel and the file system
supports on-line resizing. (Modern Linux 2.6 kernels will support on-
line resize for file systems mounted using ext3 and ext4; ext3 file
systems will require the use of file systems with the resize_inode fea‐
ture enabled.)
语法格式：resize2fs [参数] [文件]
常用参数：
| -d | 打开调试特性 |
| -p | 打印已完成的百分比进度条 |
| -f | 强制执行调整大小操作，覆盖掉安全检查操作 |
| -F | 开始执行调整大小前，刷新文件系统设备的缓冲区 |
参考实例
调整逻辑卷文件系统大小：
[root@linuxcool ~]# resize2fs /dev/linuxprobe/vo打开调试特性：
[root@linuxcool ~]# resize2fs -d /dev/linuxprobe/vo打印已完成的百分比进度条：
[root@linuxcool ~]# resize2fs -p /dev/linuxprobe/vo强制执行调整大小操作，覆盖掉安全检查操作：
[root@linuxcool ~]# resize2fs -f /dev/linuxprobe/vo开始执行调整大小前，刷新文件系统设备的缓冲区：
[root@linuxcool ~]# resize2fs -F /dev/linuxprobe/vohttps://www.linuxcool.com/resize2fs
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