[libvirt] [PATCHv4 2/2] save: generate idempotent inactive xml for running domain
Eric Blake
eblake at redhat.com
Fri Jul 29 17:15:07 UTC 2011
Originally noticed by comparing the xml generated by virDomainSave
with the xml produced by reparsing and redumping that xml, but I
also did an audit of every last use of VIR_DOMAIN_XML_INACTIVE in
domain_conf.c to ensure that no other discrepancies exist.
* src/conf/domain_conf.c (virDomainDeviceInfoIsSet): Add
parameter, and update all callers. Make static.
(virDomainNetDefFormat): Skip generated ifname.
(virDomainDefFormatInternal): Skip default <seclabel>.
(virDomainChrSourceDefParseXML): Skip generated pty path, and add
parameter. Update callers.
* src/conf/domain_conf.h (virDomainDeviceInfoIsSet): Delete.
* src/libvirt_private.syms (domain_conf.h): Update.
---
v4: also tweak virDomainDefFormatInternal, virDomainChrSourceDefParseXML,
patch is now fully tested and complete
v3: new patch in RFC state
src/conf/domain_conf.c | 41 ++++++++++++++++++++++++-----------------
src/conf/domain_conf.h | 1 -
src/libvirt_private.syms | 1 -
3 files changed, 24 insertions(+), 19 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 72eccde..e182cd6 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -1411,11 +1411,12 @@ int virDomainDeviceVirtioSerialAddressIsValid(
}
-int virDomainDeviceInfoIsSet(virDomainDeviceInfoPtr info)
+static int
+virDomainDeviceInfoIsSet(virDomainDeviceInfoPtr info, unsigned int flags)
{
if (info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
return 1;
- if (info->alias)
+ if (info->alias && !(flags & VIR_DOMAIN_XML_INACTIVE))
return 1;
return 0;
}
@@ -3297,7 +3298,7 @@ error:
* <target>, which is used by <serial> but not <smartcard>). */
static int
virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
- xmlNodePtr cur)
+ xmlNodePtr cur, unsigned int flags)
{
char *bindHost = NULL;
char *bindService = NULL;
@@ -3320,7 +3321,10 @@ virDomainChrSourceDefParseXML(virDomainChrSourceDefPtr def,
case VIR_DOMAIN_CHR_TYPE_FILE:
case VIR_DOMAIN_CHR_TYPE_PIPE:
case VIR_DOMAIN_CHR_TYPE_UNIX:
- if (path == NULL)
+ /* PTY path is only parsed from live xml. */
+ if (path == NULL &&
+ (def->type != VIR_DOMAIN_CHR_TYPE_PTY ||
+ !(flags & VIR_DOMAIN_XML_INACTIVE)))
path = virXMLPropString(cur, "path");
break;
@@ -3571,7 +3575,7 @@ virDomainChrDefParseXML(virCapsPtr caps,
}
cur = node->children;
- remaining = virDomainChrSourceDefParseXML(&def->source, cur);
+ remaining = virDomainChrSourceDefParseXML(&def->source, cur, flags);
if (remaining < 0)
goto error;
if (remaining) {
@@ -3703,7 +3707,7 @@ virDomainSmartcardDefParseXML(xmlNodePtr node,
}
cur = node->children;
- if (virDomainChrSourceDefParseXML(&def->data.passthru, cur) < 0)
+ if (virDomainChrSourceDefParseXML(&def->data.passthru, cur, flags) < 0)
goto error;
if (def->data.passthru.type == VIR_DOMAIN_CHR_TYPE_SPICEVMC) {
@@ -8736,7 +8740,7 @@ virDomainControllerDefFormat(virBufferPtr buf,
break;
}
- if (virDomainDeviceInfoIsSet(&def->info)) {
+ if (virDomainDeviceInfoIsSet(&def->info, flags)) {
virBufferAddLit(buf, ">\n");
if (virDomainDeviceInfoFormat(buf, &def->info, flags) < 0)
return -1;
@@ -8966,9 +8970,14 @@ virDomainNetDefFormat(virBufferPtr buf,
break;
}
- if (def->ifname)
+
+ if (def->ifname &&
+ !((flags & VIR_DOMAIN_XML_INACTIVE) &&
+ (STRPREFIX(def->ifname, VIR_NET_GENERATED_PREFIX)))) {
+ /* Skip auto-generated target names for inactive config. */
virBufferEscapeString(buf, " <target dev='%s'/>\n",
def->ifname);
+ }
if (def->model) {
virBufferEscapeString(buf, " <model type='%s'/>\n",
def->model);
@@ -9204,7 +9213,7 @@ virDomainChrDefFormat(virBufferPtr buf,
break;
}
- if (virDomainDeviceInfoIsSet(&def->info)) {
+ if (virDomainDeviceInfoIsSet(&def->info, flags)) {
if (virDomainDeviceInfoFormat(buf, &def->info, flags) < 0)
return -1;
}
@@ -9232,7 +9241,7 @@ virDomainSmartcardDefFormat(virBufferPtr buf,
virBufferAsprintf(buf, " <smartcard mode='%s'", mode);
switch (def->type) {
case VIR_DOMAIN_SMARTCARD_TYPE_HOST:
- if (!virDomainDeviceInfoIsSet(&def->info)) {
+ if (!virDomainDeviceInfoIsSet(&def->info, flags)) {
virBufferAddLit(buf, "/>\n");
return 0;
}
@@ -9282,7 +9291,7 @@ virDomainSoundDefFormat(virBufferPtr buf,
virBufferAsprintf(buf, " <sound model='%s'",
model);
- if (virDomainDeviceInfoIsSet(&def->info)) {
+ if (virDomainDeviceInfoIsSet(&def->info, flags)) {
virBufferAddLit(buf, ">\n");
if (virDomainDeviceInfoFormat(buf, &def->info, flags) < 0)
return -1;
@@ -9311,7 +9320,7 @@ virDomainMemballoonDefFormat(virBufferPtr buf,
virBufferAsprintf(buf, " <memballoon model='%s'",
model);
- if (virDomainDeviceInfoIsSet(&def->info)) {
+ if (virDomainDeviceInfoIsSet(&def->info, flags)) {
virBufferAddLit(buf, ">\n");
if (virDomainDeviceInfoFormat(buf, &def->info, flags) < 0)
return -1;
@@ -9360,7 +9369,7 @@ virDomainWatchdogDefFormat(virBufferPtr buf,
virBufferAsprintf(buf, " <watchdog model='%s' action='%s'",
model, action);
- if (virDomainDeviceInfoIsSet(&def->info)) {
+ if (virDomainDeviceInfoIsSet(&def->info, flags)) {
virBufferAddLit(buf, ">\n");
if (virDomainDeviceInfoFormat(buf, &def->info, flags) < 0)
return -1;
@@ -9443,7 +9452,7 @@ virDomainInputDefFormat(virBufferPtr buf,
virBufferAsprintf(buf, " <input type='%s' bus='%s'",
type, bus);
- if (virDomainDeviceInfoIsSet(&def->info)) {
+ if (virDomainDeviceInfoIsSet(&def->info, flags)) {
virBufferAddLit(buf, ">\n");
if (virDomainDeviceInfoFormat(buf, &def->info, flags) < 0)
return -1;
@@ -10265,9 +10274,7 @@ virDomainDefFormatInternal(virDomainDefPtr def,
if (def->seclabel.type == VIR_DOMAIN_SECLABEL_DYNAMIC &&
!def->seclabel.baselabel &&
(flags & VIR_DOMAIN_XML_INACTIVE)) {
- virBufferAsprintf(&buf, " <seclabel type='%s' model='%s' relabel='%s'/>\n",
- sectype, def->seclabel.model,
- def->seclabel.norelabel ? "no" : "yes");
+ /* This is the default for inactive xml, so nothing to output. */
} else {
virBufferAsprintf(&buf, " <seclabel type='%s' model='%s' relabel='%s'>\n",
sectype, def->seclabel.model,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index dd33eb0..abf9cbd 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1412,7 +1412,6 @@ int virDomainDeviceAddressIsValid(virDomainDeviceInfoPtr info,
int virDomainDevicePCIAddressIsValid(virDomainDevicePCIAddressPtr addr);
int virDomainDeviceDriveAddressIsValid(virDomainDeviceDriveAddressPtr addr);
int virDomainDeviceVirtioSerialAddressIsValid(virDomainDeviceVirtioSerialAddressPtr addr);
-int virDomainDeviceInfoIsSet(virDomainDeviceInfoPtr info);
void virDomainDeviceInfoClear(virDomainDeviceInfoPtr info);
void virDomainDefClearPCIAddresses(virDomainDefPtr def);
void virDomainDefClearDeviceAliases(virDomainDefPtr def);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 8b4d582..830222b 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -267,7 +267,6 @@ virDomainDeviceAddressIsValid;
virDomainDeviceAddressTypeToString;
virDomainDeviceDefFree;
virDomainDeviceDefParse;
-virDomainDeviceInfoIsSet;
virDomainDeviceInfoIterate;
virDomainDevicePCIAddressIsValid;
virDomainDeviceTypeToString;
--
1.7.4.4
More information about the libvir-list
mailing list