On Wed, Jun 20, 2012 at 10:08:51PM +1000, Joseph Glanville wrote: > Hi Kent and list, > > I have pulled down the latest bcache code and have been playing around > with it when I noticed that I am having issues starting Xen virtual > machines using bcache + LVM. > What is interesting is the QEMU storage emulation in userspace is able > to access the device fine however blkback kernel module which uses the > device directly seems to fail. > How would I go about debugging any of this? > > Older versions of bcache work fine so it's a regression as far as I can tell. Hey, sorry for the delay - I just got back from my first sort-of vacation in... awhile :P I'm pretty sure I know the approximate source of the regression - I fairly recently reworked some code in the generic block layer to handle arbitrary size bios (which enabled some major cleanups in the bcache code). I've chased down a few bugs with that code since then. Got some logs for me to look at? Or did you want me to give you pointers on debugging kernel code? :) > > Joseph. > > -- > CTO | Orion Virtualisation Solutions | www.orionvm.com.au > Phone: 1300 56 99 52 | Mobile: 0428 754 846 -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
