Michael Tokarev wrote:
With 5-drive linux raid10: A B C D E 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 ... A&B can't be removed - 0, 5. A&C CAN be removed, as are A&D. But not A&E - losing 2 and 7. And so on.
I stand corrected by Michael, this is indeed the case with the current state of md raid 10. Either my observations were incorrect when I made them a year and a half ago, or some fixes went into the kernel since then.
In any way - linux md10 does behave exactly as a classic raid 1+0 when created with -n D -p nS where D and S are both even and D = 2S.
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