Re: [Question] Does the kernel ignore errors writng to disk?

From: Anton Altaparmakov
Date: Fri Apr 29 2005 - 02:26:53 EST

On Thu, 28 Apr 2005, Bryan Henderson wrote:
> >O_SYNC doesn't work completely on several file systems and only on the
> >latest kernels with some of the common ones.
> Hmmm. You didn't mention such a restriction when you suggested fsync()
> before. Does fsync() work completely on these kernels where O_SYNC
> doesn't? Considering that a simple implementation of O_SYNC just does the
> equivalent of an fsync() inside every write(), that would be hard to
> understand.

Some file systems implement their fsync() function as "return 0;" so no,
you cannot rely on it at all.

Best regards,

Anton Altaparmakov <aia21 at> (replace at with @)
Unix Support, Computing Service, University of Cambridge, CB2 3QH, UK
Linux NTFS maintainer / IRC: #ntfs on
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