On Samstag, 24. Juli 2010 Eric Sandeen wrote: > > If it really is one using -s size=4096 is the right thing to do. > > Haven't read the whole thread so maybe this is redundant, but make > sure all partitions (if any) are 4k aligned as well (unless it has > the secret-handshake sector 63 offset...) Thank you Christoph for clarification, also thanks to Eric - I've been aligning all partitions to a multiple of 512 sectors since a long time, which fits all stripe set sizes up to 256k. Too bad that even Linux fdisk and parted still don't do something like that, today I setup a Novell SLES 11 with XEN VM, and everywhere parted would align the first partition (when using GPT) to sector 34.. what a number.. Good that 4K sector drives arrive now, so the tools will hopefully change for a better default. BTW: AFAIK SSD drives have a (sometimes very large) internal alignment of bytes which should be used as a "stripe size" to meet the optimal I/O size. Is there a way to find out how big that is yet? -- mit freundlichen Grüssen, Michael Monnerie, Ing. BSc it-management Internet Services http://proteger.at [gesprochen: Prot-e-schee] Tel: 0660 / 415 65 31 ****** Aktuelles Radiointerview! ****** http://www.it-podcast.at/aktuelle-sendung.html // Wir haben im Moment zwei Häuser zu verkaufen: // http://zmi.at/langegg/ // http://zmi.at/haus2009/
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