DANGER WILL ROBINSON! SERIOUS problem with current 5.4-PRERELEASE - FURTHER UPDATE

[Karl Denninger]

On Tue, Apr 05, 2005 at 08:25:04PM -0500, Karl Denninger wrote:
> 
> This patch appears to be "safe".
> 
> I have about 2 hours on the production machine right now post-rebuild (which
> had to complete first) with the added "callout_drain" in, have taken two DMA
> WRITE retries, and have not yet seen any evidence of destabilization.
> 
> This is good evidence but not proof - before I took out the original line
> the FIRST write retry would immediately cause the system to become unstable.

I have forced over a dozen errors (high rate I/O) and still no stability
problems.

Patch looks good.

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