On Tue, Sep 15, 2009 at 09:37:44PM +1000, Hugh wrote: > Sep 10 20:55:46 fc11-64 kernel: device-mapper: table: device 8:18 > too small for target There's your answer: You're trying to make it bigger than the underlying device. Use pvs -v to check device sizes for discrepancies. (--units s if necessary). Alasdair