20 Feb
2013
20 Feb
'13
12:12 p.m.
On Wed, 2013-02-20 at 17:07 +0000, Jim Fehlig wrote:
libxl__device_disk_set_backend is the guy to look at if you are interested how the selection happens.
After taking a peek, agreed that LIBXL_DISK_BACKEND_UNKNOWN is a better backend default. I'll leave the format default of LIBXL_DISK_FORMAT_RAW to be consistent with $xen-src/docs/misc/xl-disk-configuration.txt.
Makes sense, libxl deliberately does not do format detection because it can be dangerous (since a guest admin with a raw disk can write a qcow snapshot header to the device pointing to /etc/shadow etc). Ian.