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On Monday 01 February 2010 12:58:49 J. Roeleveld wrote: |
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> Hi All, |
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> |
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> I am currently installing a new server and am using Linux software raid to |
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> merge 6 * 1.5TB drives in a RAID5 configuration. |
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> |
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> Creating the RAID5 takes over 20 hours (according to " cat /proc/mdstat ") |
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> |
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> Is there a way that will speed this up? The drives are new, but contain |
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> random data left over from some speed and reliability tests I did. I don't |
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> care about keeping the current 'data', as long as when the array is |
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> reliable later. |
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> |
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> Can I use the " --assume-clean " option with mdadm and then expect it to |
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> keep working, even through reboots? |
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> Or is this a really bad idea? |
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> |
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> Many thanks, |
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> |
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> Joost Roeleveld |
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> |
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|
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Hi all, |
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|
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Many thanks for all the input, I did wait the 20 hours, but when it was |
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finished, the performance was still slow. And trying out different options for |
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the array didn't actually help. |
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|
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Thanks to the thread "1-Terabyte drives - 4K sector sizes? -> bar performance |
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so far" I figured out the problem (4KB sectors). |
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After changing the partitions to use sector 64 as start (as opposed to 63) a |
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build of the array should only take 6 hours. |
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Hopefully, the raid-array will also show a better performance when this is |
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finished. |
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|
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-- |
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Joost Roeleveld |