k...@munnari.oz.au (Robert Elz) writes: >It is easy to see why this happens in the CGD source, I think there's >even an XXX comment that is related ... an easy "fix" would just be to >multiply the size by 8 (by the appropriate factor really, of course) >but that then makes the CGD look like it is a 512 bye/sec device, which >would permit 512 byte reads on odd boundaries, which the underlying drive >cannot handle.
You need to copy the sector size from the underlying disk and you need to fix a few cases where DEV_BSIZE is used for buffer sizes. >So, all block numbers in a FFS (even on a 4k sector disk) would still be >in DEV_BSIZE units, they'd just always be conveniently multiples of 8... Actually FFS calculates everything in fragment addresses and converts these to DEV_BSIZE addresses when passing to the device driver. -- -- Michael van Elst Internet: mlel...@serpens.de "A potential Snark may lurk in every tree."