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Use device_del to remove SCSI controllers

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when the underlying qemu supports the drive/device model and the
controller has been added this way.
* src/qemu/qemu_driver.c: use qemuMonitorDelDevice() when detaching
  PCI controller and if supported
* src/qemu/qemu_monitor.[ch]: add new qemuMonitorDelDevice() function
* src/qemu/qemu_monitor_json.[ch]: JSON backend for DelDevice command
* src/qemu/qemu_monitor_text.[ch]: Text backend for DelDevice command
This commit is contained in:
Wolfgang Mauerer 2010-03-02 09:40:51 +01:00 committed by Daniel Veillard
parent 55946f23a6
commit 8540dadbe9
7 changed files with 111 additions and 6 deletions
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31
src/qemu/qemu_driver.c
View File

@ -6230,7 +6230,8 @@ cleanup:
static int qemudDomainDetachPciControllerDevice(struct qemud_driver *driver,
virDomainObjPtr vm,
virDomainDeviceDefPtr dev)
virDomainDeviceDefPtr dev,
unsigned long long qemuCmdFlags)
{
int i, ret = -1;
virDomainControllerDefPtr detach = NULL;
@ -6259,11 +6260,23 @@ static int qemudDomainDetachPciControllerDevice(struct qemud_driver *driver,
goto cleanup;
}
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
if (qemuAssignDeviceControllerAlias(detach) < 0)
goto cleanup;
}
qemuDomainObjEnterMonitorWithDriver(driver, vm);
if (qemuMonitorRemovePCIDevice(priv->mon,
&detach->info.addr.pci) < 0) {
qemuDomainObjExitMonitor(vm);
goto cleanup;
if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
if (qemuMonitorDelDevice(priv->mon, detach->info.alias)) {
qemuDomainObjExitMonitor(vm);
goto cleanup;
}
} else {
if (qemuMonitorRemovePCIDevice(priv->mon,
&detach->info.addr.pci) < 0) {
qemuDomainObjExitMonitor(vm);
goto cleanup;
}
}
qemuDomainObjExitMonitorWithDriver(driver, vm);
@ -6513,6 +6526,7 @@ static int qemudDomainDetachDevice(virDomainPtr dom,
const char *xml) {
struct qemud_driver *driver = dom->conn->privateData;
virDomainObjPtr vm;
unsigned long long qemuCmdFlags;
virDomainDeviceDefPtr dev = NULL;
int ret = -1;
@ -6540,6 +6554,10 @@ static int qemudDomainDetachDevice(virDomainPtr dom,
if (dev == NULL)
goto endjob;
if (qemudExtractVersionInfo(vm->def->emulator,
NULL,
&qemuCmdFlags) < 0)
goto endjob;
if (dev->type == VIR_DOMAIN_DEVICE_DISK &&
dev->data.disk->device == VIR_DOMAIN_DISK_DEVICE_DISK &&
@ -6549,7 +6567,8 @@ static int qemudDomainDetachDevice(virDomainPtr dom,
ret = qemudDomainDetachNetDevice(driver, vm, dev);
} else if (dev->type == VIR_DOMAIN_DEVICE_CONTROLLER) {
if (dev->data.controller->type == VIR_DOMAIN_CONTROLLER_TYPE_SCSI) {
ret = qemudDomainDetachPciControllerDevice(driver, vm, dev);
ret = qemudDomainDetachPciControllerDevice(driver, vm, dev,
qemuCmdFlags);
} else {
qemuReportError(VIR_ERR_NO_SUPPORT,
_("disk controller bus '%s' cannot be hotunplugged."),

13
src/qemu/qemu_monitor.c
View File

@ -1318,6 +1318,19 @@ int qemuMonitorGetAllPCIAddresses(qemuMonitorPtr mon,
return ret;
}
int qemuMonitorDelDevice(qemuMonitorPtr mon,
const char *devicestr)
{
DEBUG("mon=%p, fd=%d device(del)=%s", mon, mon->fd, devicestr);
int ret;
if (mon->json)
ret = qemuMonitorJSONDelDevice(mon, devicestr);
else
ret = qemuMonitorTextDelDevice(mon, devicestr);
return ret;
}
int qemuMonitorAddDevice(qemuMonitorPtr mon,
const char *devicestr)

3
src/qemu/qemu_monitor.h
View File

@ -290,6 +290,9 @@ int qemuMonitorGetAllPCIAddresses(qemuMonitorPtr mon,
int qemuMonitorAddDevice(qemuMonitorPtr mon,
const char *devicestr);
int qemuMonitorDelDevice(qemuMonitorPtr mon,
const char *devicestr);
int qemuMonitorAddDrive(qemuMonitorPtr mon,
const char *drivestr);

24
src/qemu/qemu_monitor_json.c
View File

@ -1835,6 +1835,30 @@ int qemuMonitorJSONGetAllPCIAddresses(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
}
int qemuMonitorJSONDelDevice(qemuMonitorPtr mon,
const char *devicestr)
{
int ret;
virJSONValuePtr cmd;
virJSONValuePtr reply = NULL;
cmd = qemuMonitorJSONMakeCommand("device_del",
"s:config", devicestr,
NULL);
if (!cmd)
return -1;
ret = qemuMonitorJSONCommand(mon, cmd, &reply);
if (ret == 0)
ret = qemuMonitorJSONCheckError(cmd, reply);
virJSONValueFree(cmd);
virJSONValueFree(reply);
return ret;
}
int qemuMonitorJSONAddDevice(qemuMonitorPtr mon,
const char *devicestr)
{

3
src/qemu/qemu_monitor_json.h
View File

@ -161,6 +161,9 @@ int qemuMonitorJSONGetAllPCIAddresses(qemuMonitorPtr mon,
int qemuMonitorJSONAddDevice(qemuMonitorPtr mon,
const char *devicestr);
int qemuMonitorJSONDelDevice(qemuMonitorPtr mon,
const char *devicestr);
int qemuMonitorJSONAddDrive(qemuMonitorPtr mon,
const char *drivestr);

40
src/qemu/qemu_monitor_text.c
View File

@ -2058,6 +2058,46 @@ error:
#undef SKIP_TO
int qemuMonitorTextDelDevice(qemuMonitorPtr mon,
const char *devicestr)
{
char *cmd = NULL;
char *reply = NULL;
char *safedev;
int ret = -1;
if (!(safedev = qemuMonitorEscapeArg(devicestr))) {
virReportOOMError();
goto cleanup;
}
if (virAsprintf(&cmd, "device_del %s", safedev) < 0) {
virReportOOMError();
goto cleanup;
}
if (qemuMonitorCommand(mon, cmd, &reply) < 0) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("cannot detach %s device"), devicestr);
goto cleanup;
}
if (STRNEQ(reply, "")) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("detaching %s device failed: %s"), devicestr, reply);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(cmd);
VIR_FREE(reply);
VIR_FREE(safedev);
return ret;
}
int qemuMonitorTextAddDevice(qemuMonitorPtr mon,
const char *devicestr)
{

3
src/qemu/qemu_monitor_text.h
View File

@ -163,6 +163,9 @@ int qemuMonitorTextGetAllPCIAddresses(qemuMonitorPtr mon,
int qemuMonitorTextAddDevice(qemuMonitorPtr mon,
const char *devicestr);
int qemuMonitorTextDelDevice(qemuMonitorPtr mon,
const char *devicestr);
int qemuMonitorTextAddDrive(qemuMonitorPtr mon,
const char *drivestr);