> -----Original Message----- > From: Kevin Brown [mailto:[EMAIL PROTECTED] > Sent: 06 March 2003 04:37 > To: [EMAIL PROTECTED] > Subject: Re: [HACKERS] Win32 Powerfail testing > > > Tatsuo Ishii wrote: > > Sorry, but it does not help. The page says we could use > > FlushFileBuffers() to sync the kernel buffer to the > > disk. Unfortunately, it requires a file descriptor to flush for its > > argument. Thus it could not be a replacement of sync(). Actually I > > have modified the buffer manager so that it remembers all file > > descriptors those have not been synced yet to the disk at the > > checkpoint time to sync them later. However I found this > modification > > does not help at all with some reason I don't know. > > It would be an interesting comparison for you to roll the > file descriptor tracking changes into the Unix side of the > tree and use > fsync() or fdatasync() in place of FlushFileBuffers() on the > Unix side (you'd have to remove or disable the code that does > a sync() of course). If the end result yields no data > corruption issues during powerfail testing on various Unix > platforms then it's reasonably likely that the problem you're > experiencing on the Windows side is with the underlying > Windows platform and not with your code.
Agreed, but I still keep thinking that despite some peoples claims that Windows ain't up to it, DB2, SQL and Exchange Server as well a probably others that don't use raw partitions have got over this problem, so therefore we should be able to. Admittedly Microsoft have a bit of an advantage over us, but there must be some accessible way of flushing the buffers in a guaranteed way. I'll look into it some more today if I can... Regards, Dave. ---------------------------(end of broadcast)--------------------------- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
