https://deguiliu.github.io/tech-notes/tags/filesystem/Recent content in Filesystem on 技术笔记Hugo -- 0.168.0zh-cnFri, 18 Sep 2026 08:00:00 +0000https://deguiliu.github.io/tech-notes/posts/architecture/embedded_block_device_write_path/Fri, 18 Sep 2026 08:00:00 +0000https://deguiliu.github.io/tech-notes/posts/architecture/embedded_block_device_write_path/一次写入要经过四层地址翻译：字节偏移、扇区、设备块号、命令。多数人以为数据在这四层里被拷了四遍，实际一次都没有。