Commit 5e6d16ab authored by Apollon Oikonomopoulos's avatar Apollon Oikonomopoulos Committed by Thomas Thrainer
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KVM: reserve a PCI slot for the SCSI controller

Currently instances with disk_type=scsi are broken, because the SCSI
controller uses a PCI slot not accounted for in the PCI assignment
logic. We reserve a throw-away slot just for that.

This is a temporary workaround and will be reverted during the upcoming
Signed-off-by: default avatarApollon Oikonomopoulos <>
Signed-off-by: default avatarThomas Thrainer <>
Reviewed-by: default avatarThomas Thrainer <>
parent a4bbd52a
......@@ -1377,6 +1377,10 @@ class KVMHypervisor(hv_base.BaseHypervisor):
_ = _GetFreeSlot(pci_reservations, reserve=True)
kvm_cmd.extend(["-soundhw", soundhw])
if hvp[constants.HV_DISK_TYPE] == constants.HT_DISK_SCSI:
# The SCSI controller requires another PCI slot.
_ = _GetFreeSlot(pci_reservations, reserve=True)
# Add id to ballon and place to the first available slot (3 or 4)
addr = _GetFreeSlot(pci_reservations, reserve=True)
pci_info = ",bus=pci.0,addr=%s" % hex(addr)
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