For scsi-generic, the command line will be like:
-drive file=/dev/sg0,if=none,id=drive-hostdev-scsi_host0-0-0-0 \
-device scsi-generic,bus=scsi0.0,channel=0,scsi-id=4,lun=8,\
drive=drive-hostdev-scsi_host0-0-0-0,id=hostdev-scsi_host0-0-0-0
The relationship between the libvirt address attrs and the qdev
properties are(channel should always be 0):
bus=scsi<controller>.0
scsi-id=<target>
lun=<unit>
Signed-off-by: Han Cheng <hanc.fnst@xxxxxxxxxxxxxx>
---
src/qemu/qemu_command.c | 130 +++++++++++++++++++++++++++++++++++++++++++++-
src/qemu/qemu_command.h | 6 ++
2 files changed, 133 insertions(+), 3 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index e0c53be..ea1f5e0 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -659,7 +659,16 @@ qemuAssignDeviceHostdevAlias(virDomainDefPtr def, virDomainHostdevDefPtr hostdev
}
}
- if (virAsprintf(&hostdev->info->alias, "hostdev%d", idx) < 0) {
+ if (hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI) {
+ if (virAsprintf(&hostdev->info->alias, "hostdev-%s-%d-%d-%d",
+ hostdev->source.subsys.u.scsi.adapter,
+ hostdev->source.subsys.u.scsi.bus,
+ hostdev->source.subsys.u.scsi.target,
+ hostdev->source.subsys.u.scsi.unit) < 0) {
+ virReportOOMError();
+ return -1;
+ }
+ } else if (virAsprintf(&hostdev->info->alias, "hostdev%d", idx) < 0) {
virReportOOMError();
return -1;
}
@@ -4416,6 +4425,87 @@ qemuBuildUSBHostdevUsbDevStr(virDomainHostdevDefPtr dev)
return ret;
}
+char *
+qemuBuildSCSIHostdevDrvStr(virDomainHostdevDefPtr dev, virQEMUCapsPtr qemuCaps)
+{
+ virBuffer buf = VIR_BUFFER_INITIALIZER;
+ char *sg = NULL;
+
+ if (!(sg = virSCSIDeviceGetDevStr(dev->source.subsys.u.scsi.adapter,
+ dev->source.subsys.u.scsi.bus,
+ dev->source.subsys.u.scsi.target,
+ dev->source.subsys.u.scsi.unit))) {
+ goto error;
+ }
+
+ virBufferAsprintf(&buf, "file=/dev/%s,if=none", sg);
+ VIR_FREE(sg);
+ virBufferAsprintf(&buf, ",id=%s-%s",
+ virDomainDeviceAddressTypeToString(dev->info->type),
+ dev->info->alias);
+ if (dev->readonly &&
+ virQEMUCapsGet(qemuCaps, QEMU_CAPS_DRIVE_READONLY))
+ virBufferAsprintf(&buf, ",readonly=on");
+ if (virBufferError(&buf)) {
+ virReportOOMError();
+ goto error;
+ }
+
+ return virBufferContentAndReset(&buf);
+
+error:
+ virBufferFreeAndReset(&buf);
+ return NULL;
+}
+
+
+char *
+qemuBuildSCSIHostdevDevStr(virDomainDefPtr def, virDomainHostdevDefPtr dev,
+ virQEMUCapsPtr qemuCaps)
+{
+ virBuffer buf = VIR_BUFFER_INITIALIZER;
+ int controllerModel = -1;
+
+ controllerModel =
+ virDomainDeviceFindControllerModel(def, dev->info,
+ VIR_DOMAIN_CONTROLLER_TYPE_SCSI);
+ if (qemuSetScsiControllerModel(def, qemuCaps, &controllerModel) < 0)
+ goto error;
+ /* TODO: deal with lsi or ibm controller */
+ if (controllerModel == VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_SCSI) {
+ virBufferAsprintf(&buf, "scsi-generic");
+ if (dev->info->addr.drive.bus != 0) {
+ virReportError(VIR_ERR_XML_ERROR,
+ "%s", _("SCSI controller only supports 1 bus"));
+ goto error;
+ }
+ /* TODO: deal with early version qemu which does not support bus... */
+ virBufferAsprintf(&buf,
+ ",bus=scsi%d.0,channel=0,scsi-id=%d,lun=%d",
+ dev->info->addr.drive.controller,
+ dev->info->addr.drive.target,
+ dev->info->addr.drive.unit);
+ virBufferAsprintf(&buf, ",drive=%s-%s,id=%s",
+ virDomainDeviceAddressTypeToString(dev->info->type),
+ dev->info->alias, dev->info->alias);
+ if (dev->info->bootIndex)
+ virBufferAsprintf(&buf, ",bootindex=%d", dev->info->bootIndex);
+ } else {
+ virReportError(VIR_ERR_INTERNAL_ERROR,
+ _("Unsupport controller model '%s'"),
+ virDomainControllerModelSCSITypeToString(controllerModel));
+ goto error;
+ }
+ if (virBufferError(&buf)) {
+ virReportOOMError();
+ goto error;
+ }
+
+ return virBufferContentAndReset(&buf);
+error:
+ virBufferFreeAndReset(&buf);
+ return NULL;
+}
/* This function outputs a -chardev command line option which describes only the
@@ -7489,10 +7579,11 @@ qemuBuildCommandLine(virConnectPtr conn,
if (hostdev->info->bootIndex) {
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
(hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
- hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB)) {
+ hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB &&
+ hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("booting from assigned devices is only"
- " supported for PCI and USB devices"));
+ " supported for PCI, USB and SCSI devices"));
goto error;
} else {
if (hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
@@ -7509,6 +7600,39 @@ qemuBuildCommandLine(virConnectPtr conn,
" supported with this version of qemu"));
goto error;
}
+ if (hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_SCSI_GENERIC_BOOTINDEX)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("booting from assigned SCSI devices is not"
+ " supported with this version of qemu"));
+ goto error;
+ }
+ }
+ }
+
+ /* SCSI */
+ if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
+ hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI) {
+ if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_DRIVE) &&
+ virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE) &&
+ virQEMUCapsGet(qemuCaps, QEMU_CAPS_SCSI_GENERIC)) {
+ char *drvstr;
+
+ virCommandAddArg(cmd, "-drive");
+ if (!(drvstr = qemuBuildSCSIHostdevDrvStr(hostdev, qemuCaps)))
+ goto error;
+ virCommandAddArg(cmd, drvstr);
+ VIR_FREE(drvstr);
+
+ virCommandAddArg(cmd, "-device");
+ if (!(devstr = qemuBuildSCSIHostdevDevStr(def, hostdev, qemuCaps)))
+ goto error;
+ virCommandAddArg(cmd, devstr);
+ VIR_FREE(devstr);
+ } else {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("SCSI passthrough is not supported by this version of qemu"));
+ goto error;
}
}
diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h
index 1789c20..fcf9892 100644
--- a/src/qemu/qemu_command.h
+++ b/src/qemu/qemu_command.h
@@ -139,6 +139,12 @@ char * qemuBuildUSBHostdevUsbDevStr(virDomainHostdevDefPtr dev);
char * qemuBuildUSBHostdevDevStr(virDomainHostdevDefPtr dev,
virQEMUCapsPtr qemuCaps);
+char * qemuBuildSCSIHostdevDrvStr(virDomainHostdevDefPtr dev,
+ virQEMUCapsPtr qemuCaps);
+char * qemuBuildSCSIHostdevDevStr(virDomainDefPtr def,
+ virDomainHostdevDefPtr dev,
+ virQEMUCapsPtr qemuCaps);
+
char * qemuBuildHubDevStr(virDomainHubDefPtr dev, virQEMUCapsPtr qemuCaps);
char * qemuBuildRedirdevDevStr(virDomainDefPtr def,
virDomainRedirdevDefPtr dev,
--
1.7.1
--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list