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SubjectRe: [ck] Re: 2.6.8.1-ck7, Two Badnessess, one dump.

>Is your drive idle while applying dma settings? Current 2.6 kernels
>aren't even close to being safe to modify drive settings, since it makes
>no effective attempts to serialize with ongoing commands. I have a
>half-assed patch to fix that.
>
>
>

No it isn't!! But I think that would be the problem. I just realized
that [after you wrote this] that I turned on 'parallel' execution in my
Gentoo init scripts for both of those systems.


Tonight, I am going to change hdparm so that it runs xfs_freeze on all
fs's just before tuning, and [of course un-freeze] to see if that cures it.

thanks,
Joshua

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