On Wed, Dec 23 2009 at 1:07pm -0500, Mike Snitzer <snitzer@xxxxxxxxxx> wrote: > From: Martin K. Petersen <martin.petersen@xxxxxxxxxx> > > The DM device limits function passes the start offset within the block > device to the block layer stacking function. The stacking function > expects the provided start offset to be relative to start of the disk > (request_queue). Until now DM was passing a start offset that was > relative to beginning of the partition (block_device), resulting in > incorrect alignment stacking. > > Add the partition offset to the values passed to blk_stack_limits(). > > Also clarify, in the DMWARN message, that the device which caused > blk_stack_limits() to return failure isn't necessarily misaligned > itself. It caused the top-level (DM) device to have inconsistent > alignment when taken in combination with all previously stacked > device(s). Alasdair, This should be pushed as a fix for 2.6.33. It should probably go to stable (2.6.31.y and 2.6.32.y) too. Mike -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
