[libvirt] [PATCH 2/3] Pass oldDev to virDomainDefCompatibleDevice on device update
Jiri Denemark
jdenemar at redhat.com
Thu Feb 22 14:21:54 UTC 2018
When calling virDomainDefCompatibleDevice to check a new device during
device update, we need to pass the original device which is going to be
updated in addition to the new device. Otherwise, the function can
report false conflicts.
The new argument is currently ignored by virDomainDefCompatibleDevice,
but this will change in the following patch.
https://bugzilla.redhat.com/show_bug.cgi?id=1546971
Signed-off-by: Jiri Denemark <jdenemar at redhat.com>
---
src/conf/domain_conf.c | 3 ++-
src/conf/domain_conf.h | 3 ++-
src/lxc/lxc_driver.c | 15 +++++++++------
src/qemu/qemu_driver.c | 51 ++++++++++++++++++++++++++++++++++++++++----------
4 files changed, 54 insertions(+), 18 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index f2ddde7a36..c71c28e8d2 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -27400,7 +27400,8 @@ virDomainDeviceInfoCheckBootIndex(virDomainDefPtr def ATTRIBUTE_UNUSED,
int
virDomainDefCompatibleDevice(virDomainDefPtr def,
- virDomainDeviceDefPtr dev)
+ virDomainDeviceDefPtr dev,
+ virDomainDeviceDefPtr oldDev ATTRIBUTE_UNUSED)
{
virDomainDeviceInfoPtr info = virDomainDeviceGetInfo(dev);
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 2350926e5b..368f16f3fb 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -3014,7 +3014,8 @@ typedef enum {
} virDomainDeviceAction;
int virDomainDefCompatibleDevice(virDomainDefPtr def,
- virDomainDeviceDefPtr dev);
+ virDomainDeviceDefPtr dev,
+ virDomainDeviceDefPtr oldDev);
void virDomainRNGDefFree(virDomainRNGDefPtr def);
diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c
index 4c6f09a435..fa6fc4643e 100644
--- a/src/lxc/lxc_driver.c
+++ b/src/lxc/lxc_driver.c
@@ -3578,6 +3578,7 @@ lxcDomainUpdateDeviceConfig(virDomainDefPtr vmdef,
{
int ret = -1;
virDomainNetDefPtr net;
+ virDomainDeviceDef oldDev = { .type = dev->type };
int idx;
switch (dev->type) {
@@ -3586,8 +3587,11 @@ lxcDomainUpdateDeviceConfig(virDomainDefPtr vmdef,
if ((idx = virDomainNetFindIdx(vmdef, net)) < 0)
goto cleanup;
- virDomainNetDefFree(vmdef->nets[idx]);
+ oldDev.data.net = vmdef->nets[idx];
+ if (virDomainDefCompatibleDevice(vmdef, dev, &oldDev) < 0)
+ return -1;
+ virDomainNetDefFree(vmdef->nets[idx]);
vmdef->nets[idx] = net;
dev->data.net = NULL;
ret = 0;
@@ -4820,7 +4824,7 @@ static int lxcDomainAttachDeviceFlags(virDomainPtr dom,
if (!vmdef)
goto endjob;
- if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
+ if (virDomainDefCompatibleDevice(vmdef, dev, NULL) < 0)
goto endjob;
if ((ret = lxcDomainAttachDeviceConfig(vmdef, dev)) < 0)
@@ -4828,7 +4832,7 @@ static int lxcDomainAttachDeviceFlags(virDomainPtr dom,
}
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
- if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
+ if (virDomainDefCompatibleDevice(vm->def, dev_copy, NULL) < 0)
goto endjob;
if ((ret = lxcDomainAttachDeviceLive(dom->conn, driver, vm, dev_copy)) < 0)
@@ -4931,9 +4935,8 @@ static int lxcDomainUpdateDeviceFlags(virDomainPtr dom,
if (!vmdef)
goto endjob;
- if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
- goto endjob;
-
+ /* virDomainDefCompatibleDevice call is delayed until we know the
+ * device we're going to update. */
if ((ret = lxcDomainUpdateDeviceConfig(vmdef, dev)) < 0)
goto endjob;
}
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 14c39b2610..313d730c79 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -7844,6 +7844,7 @@ qemuDomainChangeDiskLive(virDomainObjPtr vm,
{
virDomainDiskDefPtr disk = dev->data.disk;
virDomainDiskDefPtr orig_disk = NULL;
+ virDomainDeviceDef oldDev = { .type = dev->type };
int ret = -1;
if (virDomainDiskTranslateSourcePool(disk) < 0)
@@ -7861,6 +7862,10 @@ qemuDomainChangeDiskLive(virDomainObjPtr vm,
goto cleanup;
}
+ oldDev.data.disk = orig_disk;
+ if (virDomainDefCompatibleDevice(vm->def, dev, &oldDev) < 0)
+ goto cleanup;
+
if (!qemuDomainDiskChangeSupported(disk, orig_disk))
goto cleanup;
@@ -7903,19 +7908,36 @@ qemuDomainUpdateDeviceLive(virDomainObjPtr vm,
bool force)
{
virQEMUDriverPtr driver = dom->conn->privateData;
+ virDomainDeviceDef oldDev = { .type = dev->type };
int ret = -1;
+ int idx;
switch ((virDomainDeviceType) dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
qemuDomainObjCheckDiskTaint(driver, vm, dev->data.disk, NULL);
ret = qemuDomainChangeDiskLive(vm, dev, driver, force);
break;
+
case VIR_DOMAIN_DEVICE_GRAPHICS:
+ if ((idx = qemuDomainFindGraphicsIndex(vm->def, dev->data.graphics) >= 0)) {
+ oldDev.data.graphics = vm->def->graphics[idx];
+ if (virDomainDefCompatibleDevice(vm->def, dev, &oldDev) < 0)
+ return -1;
+ }
+
ret = qemuDomainChangeGraphics(driver, vm, dev->data.graphics);
break;
+
case VIR_DOMAIN_DEVICE_NET:
+ if ((idx = virDomainNetFindIdx(vm->def, dev->data.net)) >= 0) {
+ oldDev.data.net = vm->def->nets[idx];
+ if (virDomainDefCompatibleDevice(vm->def, dev, &oldDev) < 0)
+ return -1;
+ }
+
ret = qemuDomainChangeNet(driver, vm, dev);
break;
+
case VIR_DOMAIN_DEVICE_FS:
case VIR_DOMAIN_DEVICE_INPUT:
case VIR_DOMAIN_DEVICE_SOUND:
@@ -8329,6 +8351,7 @@ qemuDomainUpdateDeviceConfig(virDomainDefPtr vmdef,
virDomainDiskDefPtr newDisk;
virDomainGraphicsDefPtr newGraphics;
virDomainNetDefPtr net;
+ virDomainDeviceDef oldDev = { .type = dev->type };
int pos;
switch ((virDomainDeviceType) dev->type) {
@@ -8340,6 +8363,10 @@ qemuDomainUpdateDeviceConfig(virDomainDefPtr vmdef,
return -1;
}
+ oldDev.data.disk = vmdef->disks[pos];
+ if (virDomainDefCompatibleDevice(vmdef, dev, &oldDev) < 0)
+ return -1;
+
virDomainDiskDefFree(vmdef->disks[pos]);
vmdef->disks[pos] = newDisk;
dev->data.disk = NULL;
@@ -8355,8 +8382,11 @@ qemuDomainUpdateDeviceConfig(virDomainDefPtr vmdef,
return -1;
}
- virDomainGraphicsDefFree(vmdef->graphics[pos]);
+ oldDev.data.graphics = vmdef->graphics[pos];
+ if (virDomainDefCompatibleDevice(vmdef, dev, &oldDev) < 0)
+ return -1;
+ virDomainGraphicsDefFree(vmdef->graphics[pos]);
vmdef->graphics[pos] = newGraphics;
dev->data.graphics = NULL;
break;
@@ -8366,8 +8396,11 @@ qemuDomainUpdateDeviceConfig(virDomainDefPtr vmdef,
if ((pos = virDomainNetFindIdx(vmdef, net)) < 0)
return -1;
- virDomainNetDefFree(vmdef->nets[pos]);
+ oldDev.data.net = vmdef->nets[pos];
+ if (virDomainDefCompatibleDevice(vmdef, dev, &oldDev) < 0)
+ return -1;
+ virDomainNetDefFree(vmdef->nets[pos]);
vmdef->nets[pos] = net;
dev->data.net = NULL;
break;
@@ -8454,7 +8487,7 @@ qemuDomainAttachDeviceLiveAndConfig(virDomainObjPtr vm,
if (!vmdef)
goto cleanup;
- if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
+ if (virDomainDefCompatibleDevice(vmdef, dev, NULL) < 0)
goto cleanup;
if ((ret = qemuDomainAttachDeviceConfig(vmdef, dev, caps,
parse_flags,
@@ -8463,7 +8496,7 @@ qemuDomainAttachDeviceLiveAndConfig(virDomainObjPtr vm,
}
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
- if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
+ if (virDomainDefCompatibleDevice(vm->def, dev_copy, NULL) < 0)
goto cleanup;
if ((ret = qemuDomainAttachDeviceLive(vm, dev_copy, driver)) < 0)
@@ -8603,9 +8636,8 @@ static int qemuDomainUpdateDeviceFlags(virDomainPtr dom,
if (!vmdef)
goto endjob;
- if (virDomainDefCompatibleDevice(vmdef, dev) < 0)
- goto endjob;
-
+ /* virDomainDefCompatibleDevice call is delayed until we know the
+ * device we're going to update. */
if ((ret = qemuDomainUpdateDeviceConfig(vmdef, dev, caps,
parse_flags,
driver->xmlopt)) < 0)
@@ -8613,9 +8645,8 @@ static int qemuDomainUpdateDeviceFlags(virDomainPtr dom,
}
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
- if (virDomainDefCompatibleDevice(vm->def, dev_copy) < 0)
- goto endjob;
-
+ /* virDomainDefCompatibleDevice call is delayed until we know the
+ * device we're going to update. */
if ((ret = qemuDomainUpdateDeviceLive(vm, dev_copy, dom, force)) < 0)
goto endjob;
/*
--
2.16.2
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