On Thu, Feb 10, 2005 at 04:02:28PM +1100, Tim Burgess wrote: > However, dm appears to be trying > to map the range 286749488-573498975 of the dm device to the same > offsets in the sde/sdm device. > Is this what was intended? No. In dm-mpath.c try adding to multipath_map() at the top of the function: bio->bi_sector = (bio->bi_sector - ti->begin); Alasdair -- agk@xxxxxxxxxx