## wsl侧 #### Discard unused blocks on a mounted filesystem. ``` fstrim -av ``` #### 交互式检查空间占用-删除 ``` ncdu / ``` 或者使用du ## Windows侧 ### 备份 ``` wsl --shutdown wsl -l -v wsl --export Debian E:\Debian_WSL\BACKUPP\Debian-backup-20260321.tar ``` #### diskpart compact `diskpart` `select vdisk file=E:\Debian_WSL\ext4.vhdx` `compact vdisk` #### 设置为sparse减少未来占用 ``` nvim ~/.wslconfig ``` ``` [experimental] sparseVhd=true ```