On Mittwoch, 8. September 2010 Dave Chinner wrote: > Dynamically changing the RAID array geometry is a Bad Idea. Yes, > you can do it, but if you've got a filesystem full of data and > metadata aligned to the old geometry then after the modification > it won't be aligned anymore. > > If you want to do this, then either don't bother about geomtry hints > in the first place, or dump, rebuild the array, mkfs and restore so > everything is properly aligned with the new world order. Hell, > dump/mkfs/restore might even be faster than reshaping a large > array... You're right. But there are some customers who don't want to spend the money for a 2nd array, and can't afford the downtime of backup, rebuild raid (takes 8-48 hours), restore. So an online upgrade is needed. We're not in an ideal world. -- 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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