On Freitag, 23. Juli 2010 Christoph Hellwig wrote: > -b size=4096 is the default anyway, for 4k sector drivers you also > want -s size=4096, which you do not want for 512 byte sector disks. Thanks for clarification. Should I use "-s size=4096" despite the drive saying 512b sectors? It's a "hidden" 4K sector drive, so maybe declaring it extra for XFS helps performance? Or does it not matter at all? > What values do the files > > /sys/block/<device>/queue/logical_block_size > /sys/block/<device>/queue/physical_block_size > /sys/block/<device>/alignment_offset > > say about your disk? 512, 512, 0 for a Western Digital D20EARS-00MVWB0 (2TB) which has 4K sectors but obviously hides it. -- 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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