Comment 10 for bug 129260
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| Joseph Fisk (mdmbkr) wrote Re: opteron amd64 data corruption | #10 |
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73416ba
(Get the code!)
iommu=soft appears to have fixed the corruption on one system, but another is still having problems. The key difference between the fixed and broken systems is that the broken system has its root filesystem on a linux (md) raid1 disk pair.
I installed a single extra drive in the broken system and ran tests using md5sum with iommu=soft, and no corruption appeared. So apparently the broken system was suffering from the iommu issue as well.
I'm unsure whether to keep this bug report open, or file a new report? I could also use some advice on potential workarounds or ways to better isolate the problem.