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...serving the vbds so therefore the loop files must be being cached. It seems to me that dom0 shouldn''t need to cache the loop devices at all because the domUs will have their own buffer caches? Is there any way of stopping xen caching the loop devices? I thought about mapping a /dev/raw/rawX device onto /dev/loopX (which works) but the /dev/raw/rawX devices are character devices not block devices so I''m not sure how Xen would take to that. Can Xen use the new O_DIRECT feature directly when it opens the block device? I imagine its doing it from kernel space though so things m...

I just about have my PV block device drivers booting, except just before the login screen appears I get a message that the registry couldn''t be written out. I''m pretty sure that this is because some data from the int13 interface provided by the qemu intel ide driver that has been written, hasn''t actually made it to the block device (lvm volume in my case). I''ve