Shouldn't default mode for flush be true for writeFile and similar methods?

[ackava]

Is it possible that writeFile may not throw an error but actual file may not be written due to process crash?

In order to Guarente success of writeFile we have to manually put flush to true for every operation.

Is there any reason why flush is false by default?

[bnoordhuis]

Is it possible that writeFile may not throw an error but actual file may not be written due to process crash?

Process crash? No (barring OS bugs). System crash? Yes.

Is there any reason why flush is false by default?

Performance. {flush:true} translates to fs.fsync(fd) and is very slow compared to OS writeback.

[ackava]

@bnoordhuis

  await writeFile(name, buffer);
  ..
  const buffer = await readFile(name);

If readFile appears after awaiting writeFile with, even if the buffer was not flushed due to hard disk being busy, will readFile provide accurate 100% of the time?

[bnoordhuis]

Yes