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release PCI address only when we have ensured it successfully

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Steps to reproduce this bug:
1. # cat net.xml # 00:03.0 has been used
    <interface type='network'>
      <mac address='52:54:00:04:72:f3'/>
      <source network='default'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>

2. # virsh attach-device vm1 net.xml
   error: Failed to attach device from net.xml
   error: internal error unable to reserve PCI address 0:0:3

3. # virsh attach-device vm1 net.xml
   error: Failed to attach device from net.xml
   error: internal error unable to execute QEMU command 'device_add': Device 'rtl8139' could not be initialized

The reason of this bug is that: we can not reserve PCI address 0:0:3 because it has
been used, but we release PCI address when we reserve it failed.
This commit is contained in:
Wen Congyang 2011-04-26 11:40:01 +08:00
parent 3c1326385a
commit 968fd0111a
1 changed files with 13 additions and 0 deletions
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13
src/qemu/qemu_hotplug.c
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@ -147,6 +147,7 @@ int qemuDomainAttachPciDiskDevice(struct qemud_driver *driver,
qemuDomainObjPrivatePtr priv = vm->privateData;
char *devstr = NULL;
char *drivestr = NULL;
bool releaseaddr = false;
for (i = 0 ; i < vm->def->ndisks ; i++) {
if (STREQ(vm->def->disks[i]->dst, disk->dst)) {
@ -163,6 +164,7 @@ int qemuDomainAttachPciDiskDevice(struct qemud_driver *driver,
if (qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
if (qemuDomainPCIAddressEnsureAddr(priv->pciaddrs, &disk->info) < 0)
goto error;
releaseaddr = true;
if (qemuAssignDeviceDiskAlias(disk, qemuCaps) < 0)
goto error;
@ -221,6 +223,7 @@ error:
if (qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE) &&
(disk->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) &&
releaseaddr &&
qemuDomainPCIAddressReleaseAddr(priv->pciaddrs, &disk->info) < 0)
VIR_WARN("Unable to release PCI address on %s", disk->src);
@ -242,6 +245,7 @@ int qemuDomainAttachPciControllerDevice(struct qemud_driver *driver,
const char* type = virDomainControllerTypeToString(controller->type);
char *devstr = NULL;
qemuDomainObjPrivatePtr priv = vm->privateData;
bool releaseaddr = false;
for (i = 0 ; i < vm->def->ncontrollers ; i++) {
if ((vm->def->controllers[i]->type == controller->type) &&
@ -256,6 +260,7 @@ int qemuDomainAttachPciControllerDevice(struct qemud_driver *driver,
if (qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
if (qemuDomainPCIAddressEnsureAddr(priv->pciaddrs, &controller->info) < 0)
goto cleanup;
releaseaddr = true;
if (qemuAssignDeviceControllerAlias(controller) < 0)
goto cleanup;
@ -288,6 +293,7 @@ cleanup:
if ((ret != 0) &&
qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE) &&
(controller->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) &&
releaseaddr &&
qemuDomainPCIAddressReleaseAddr(priv->pciaddrs, &controller->info) < 0)
VIR_WARN0("Unable to release PCI address on controller");
@ -559,6 +565,7 @@ int qemuDomainAttachNetDevice(virConnectPtr conn,
int ret = -1;
virDomainDevicePCIAddress guestAddr;
int vlan;
bool releaseaddr = false;
if (!qemuCapsGet(qemuCaps, QEMU_CAPS_HOST_NET_ADD)) {
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
@ -595,6 +602,8 @@ int qemuDomainAttachNetDevice(virConnectPtr conn,
qemuDomainPCIAddressEnsureAddr(priv->pciaddrs, &net->info) < 0)
goto cleanup;
releaseaddr = true;
if (qemuCapsGet(qemuCaps, QEMU_CAPS_NETDEV) &&
qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE)) {
vlan = -1;
@ -694,6 +703,7 @@ cleanup:
if ((ret != 0) &&
qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE) &&
(net->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) &&
releaseaddr &&
qemuDomainPCIAddressReleaseAddr(priv->pciaddrs, &net->info) < 0)
VIR_WARN0("Unable to release PCI address on NIC");
@ -757,6 +767,7 @@ int qemuDomainAttachHostPciDevice(struct qemud_driver *driver,
char *devstr = NULL;
int configfd = -1;
char *configfd_name = NULL;
bool releaseaddr = false;
if (VIR_REALLOC_N(vm->def->hostdevs, vm->def->nhostdevs+1) < 0) {
virReportOOMError();
@ -771,6 +782,7 @@ int qemuDomainAttachHostPciDevice(struct qemud_driver *driver,
goto error;
if (qemuDomainPCIAddressEnsureAddr(priv->pciaddrs, &hostdev->info) < 0)
goto error;
releaseaddr = true;
if (qemuCapsGet(qemuCaps, QEMU_CAPS_PCI_CONFIGFD)) {
configfd = qemuOpenPCIConfig(hostdev);
if (configfd >= 0) {
@ -823,6 +835,7 @@ int qemuDomainAttachHostPciDevice(struct qemud_driver *driver,
error:
if (qemuCapsGet(qemuCaps, QEMU_CAPS_DEVICE) &&
(hostdev->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) &&
releaseaddr &&
qemuDomainPCIAddressReleaseAddr(priv->pciaddrs, &hostdev->info) < 0)
VIR_WARN0("Unable to release PCI address on host device");