Commit 9cf4321f authored by Apollon Oikonomopoulos's avatar Apollon Oikonomopoulos Committed by Guido Trotter
Browse files

Only use boot=on on non-ide disks only (KVM)

boot=on implies that KVM boots using extboot. This is only required
to boot non-IDE disks and has the side-effect that there is at most
one bootable device. This behaviour breaks some operating systems,
most notably the windows installer that tries to chainload the hard-disk
from the CD-ROM after the initial part of the installation.
Signed-off-by: default avatarGuido Trotter <>
Reviewed-by: default avatarGuido Trotter <>
parent 5b062a58
......@@ -424,7 +424,10 @@ class KVMHypervisor(hv_base.BaseHypervisor):
# TODO: handle FD_LOOP and FD_BLKTAP (?)
if boot_disk:
kvm_cmd.extend(['-boot', 'c'])
boot_val = ',boot=on'
if disk_type != constants.HT_DISK_IDE:
boot_val = ',boot=on'
boot_val = ''
# We only boot from the first disk
boot_disk = False
......@@ -439,9 +442,14 @@ class KVMHypervisor(hv_base.BaseHypervisor):
options = ',format=raw,media=cdrom'
if boot_cdrom:
kvm_cmd.extend(['-boot', 'd'])
options = '%s,boot=on' % options
if disk_type != constants.HT_DISK_IDE:
options = '%s,boot=on' % options
options = '%s,if=virtio' % options
if disk_type == constants.HT_DISK_PARAVIRTUAL:
if_val = ',if=virtio'
if_val = ',if=%s' % disk_type
options = '%s%s' % (options, if_val)
drive_val = 'file=%s%s' % (iso_image, options)
kvm_cmd.extend(['-drive', drive_val])
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