Linux command
fstrim 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Example
sudo fstrim -a
Example
sudo fstrim /
Example
sudo fstrim -v /
说明
fstrim discards unused blocks on a mounted filesystem, sending TRIM commands to the underlying storage device. This is primarily useful for SSDs and flash storage to maintain performance and extend device lifespan.
参数
- -a, --all
- Trim all mounted filesystems that support discard
- -v, --verbose
- Display number of bytes trimmed
- -n, --dry-run
- Print what would be done without actually trimming
- -o, --offset _offset_
- Byte offset in filesystem to start trimming
- -l, --length _length_
- Number of bytes to trim after offset
- -m, --minimum _size_
- Minimum contiguous free range to trim
FAQ
What is the fstrim command used for?
fstrim discards unused blocks on a mounted filesystem, sending TRIM commands to the underlying storage device. This is primarily useful for SSDs and flash storage to maintain performance and extend device lifespan.
How do I run a basic fstrim example?
Run `sudo fstrim -a` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does -a, --all do in fstrim?
Trim all mounted filesystems that support discard