On Sunday, 18 December 2016 19:32:34 CET Richard W.M. Jones wrote:
EDD (
https://en.wikipedia.org/wiki/Enhanced_Disk_Drive) is a BIOS INT
13h
subcall for communicating the extended size of the boot disk over 8GB
to the OS. Since libguestfs doesn't use a boot disk, and the
appliance disk is limited to 4GB, and we use virtio-scsi, this is all
useless.
EDD is also broken currently on RHEL 7.3, see:
https://bugzilla.redhat.com/show_bug.cgi?id=1404287
Also the EDD probing takes significant extra time (about 80ms on my
laptop), and using edd=off reduces this time although doesn't entirely
eliminate it.
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LGTM.
Thanks,
--
Pino Toscano