[Interest] QFile::write(const QByteArray&) does not write all data?

[alexander golks]

Am Thu, 17 May 2018 16:02:17 +0200
schrieb alexander golks <alex at golks.de>:

> Am Fri, 11 May 2018 08:11:04 +0200
> schrieb alexander golks <alex at golks.de>:
> 
> > my code was:
> >   qint64 res = f.write(data);  
> 
> just for the curious ones:
> 
> i have at least compiled 5.6.4 now, but i can not produce the error with my qt5core. 
> using 5.6.3 from qt, error exists. using mine, does not exist...
> 
> getting the error code directly after the f.write(data) gives me error code 183:
>   ERROR_ALREADY_EXISTS
>     183 (0xB7)
>     Cannot create a file when that file already exists.
> 
> but i assume, that the error is not from the failing WriteFile call. or does it?
> anyone with some more ideas?
> e.g. on how to reproduce or test?
> 

just rembered sysinternal utils and the process monitor. it gives me:

  16:22:20,0896364	SuperCool.exe	11456	IRP_MJ_WRITE	D:\temp\SuperCool.file	SUCCESS	Offset: 33.292.288, Length: 262.144, I/O Flags: Non-cached, Paging I/O, Synchronous Paging I/O, Priority: Normal
  16:22:20,0906890	SuperCool.exe	11456	FASTIO_RELEASE_FOR_CC_FLUSH	D:\temp\SuperCool.file	SUCCESS	
  16:22:20,0907198	SuperCool.exe	11456	FASTIO_WRITE	D:\temp\SuperCool.file	FAST IO DISALLOWED	Offset: 33.554.432, Length: 33.554.432
  16:22:20,0907377	SuperCool.exe	11456	IRP_MJ_WRITE	D:\temp\SuperCool.file	0xC00000E8	Offset: 33.554.432, Length: 33.554.432, Priority: Normal

this is the last two successfull operations on my file, 
followed by some curious "FAST IO DISALLOWED" exactly at the failing bytes size of 33.554.432,
and some other 0xC00000E8 error.

after some search i only found: https://serverfault.com/a/706177

i definitly no hardware pro, so, this is a disk driver issue?!
and only for the qt5.6.3 build?

-- 
/*
 *  panic("Foooooooood fight!");
 *          linux-2.2.16/drivers/scsi/aha1542.c
 */