As I understand it the kernel will request that writes are not cached. Which means that journaling file systems do in fact work well. As an aside a few years ago (10+ years?) Microsoft found that HDDs where using caching to spoof benchmark results. But this was leading to support hell for Microsoft with user reporting corrupt file systems to them. What Microsoft did was refuse to issue WHQL for any disk that did not have a write through cache. We in Linux land benefit from this as spoofing hardware, I believe, is not a common occurrence any more. Barry |
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