LogicalBytesPerSector 与 PhysicalBytesPerSector

Question

当我执行命令 fsutil fsinfo sectorInfo c: 时，我收到以下输出：

LogicalBytesPerSector :                                 512
PhysicalBytesPerSectorForAtomicity :                    4096
PhysicalBytesPerSectorForPerformance :                  4096
FileSystemEffectivePhysicalBytesPerSectorForAtomicity : 4096 Device
Alignment :                                      Aligned (0x000)
Partition alignment on device :                         Aligned
(0x000) No Seek Penalty Trim Supported Not DAX capable Not
Thinly-Provisioned

我担心 LogicalBytesPerSector 和 PhysicalBytesPerSectorForAtomicity 之间的区别。

由于LogicalBytesPerSector小于PhysicalBytesPerSectorForAtomicity，我写的每个512字节的块实际上是原子写的吗？另一方面，我写的每个 4096 字节的块实际上是原子写的吗？

另外，512字节的read/write会不会很慢，好像我理解的很好，系统需要读取4096个物理字节才能写入我的512字节？

Answer 1

does every block of 512 bytes I will wrote will be wrote atomically ? on the other way does every block of 4096 Bytes I will wrote will be wrote atomically?

4096 将自动写入。

512 将自动写入并可能写入其他数据以完成 4096。

Also does the read/wrote of 512 bytes will be not too much slow as, if I understand well, the system will need to read 4096 Physical bytes just to wrote my 512 bytes?

是的，至少由 PhysicalBytesPerSectorForPerformance 写。由于更有效的命令利用，更多可能会更快。