Introduced in v1.0.6~3, the idea was that unit 7 was reserved and couldn't be used by QEMU. Well, that limitation is long gone. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/conf/domain_conf.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index b7a342bb91..6a019490fd 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -4812,12 +4812,6 @@ bool virDomainSCSIDriveAddressIsUsed(const virDomainDef *def, const virDomainDeviceDriveAddress *addr) { - /* In current implementation, the maximum unit number of a controller - * is either 16 or 7 (narrow SCSI bus), and if the maximum unit number - * is 16, the controller itself is on unit 7 */ - if (addr->unit == 7) - return true; - if (virDomainDriveAddressIsUsedByDisk(def, VIR_DOMAIN_DISK_BUS_SCSI, addr) || virDomainDriveAddressIsUsedByHostdev(def, -- 2.21.0