Re: IDE DMA timeouts and reiserfs stability

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 10 May 2001 15:20:31 +0100 (BST)


> DMA timeouts occur twice. Both times corrupted my fs. While this is not
> ideal, its not unexpected as things stand now. I have seen at least three
> other reports on lkml about errors of this type - suspect that 2.4's ide
> is a little fragile in some corner cases...

The DMA handling retry code seems to be rather broken. We also have unexplained
traces of IDE recursing which would corrupt the sg tables and make rather
a mess of the IO

So yes, there is some debugging work needed on the current IDE layer

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