[libvirt] [PATCHv3] avoid false creation discard pool definition
Wen Ruo Lv
lvroyce at linux.vnet.ibm.com
Sun Nov 27 07:50:20 UTC 2011
False pool creation will clear previous definition.
This patch roll back to previous definition after pool-creat fails
ref:
http://www.redhat.com/archives/libvir-list/2011-November/msg01152.html
http://www.redhat.com/archives/libvir-list/2011-November/msg01152.html
Signed-off-by: Wen Ruo Lv <lvroyce at linux.vnet.ibm.com>
---
src/conf/storage_conf.c | 30 +++++++++++++++++++++++++-----
src/conf/storage_conf.h | 4 ++--
src/libvirt_private.syms | 1 +
src/storage/storage_driver.c | 36 ++++++++++++++++++++++++------------
src/test/test_driver.c | 18 +++++++++---------
5 files changed, 61 insertions(+), 28 deletions(-)
diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
index dadc115..bf82eb6 100644
--- a/src/conf/storage_conf.c
+++ b/src/conf/storage_conf.c
@@ -1385,17 +1385,20 @@ virStorageVolDefFindByName(virStoragePoolObjPtr pool,
virStoragePoolObjPtr
virStoragePoolObjAssignDef(virStoragePoolObjListPtr pools,
- virStoragePoolDefPtr def) {
+ virStoragePoolDefPtr *pdef) {
virStoragePoolObjPtr pool;
+ virStoragePoolDefPtr lastDef;
+ virStoragePoolDefPtr def = *pdef;
if ((pool = virStoragePoolObjFindByName(pools, def->name))) {
if (!virStoragePoolObjIsActive(pool)) {
- virStoragePoolDefFree(pool->def);
+ lastDef = pool->def;
pool->def = def;
} else {
- virStoragePoolDefFree(pool->newDef);
+ lastDef = pool->newDef;
pool->newDef = def;
}
+ *pdef = lastDef;
return pool;
}
@@ -1421,11 +1424,26 @@ virStoragePoolObjAssignDef(virStoragePoolObjListPtr pools,
virReportOOMError();
return NULL;
}
+ *pdef = NULL;
pools->objs[pools->count++] = pool;
return pool;
}
+void virStoragePoolObjDefRollBack(virStoragePoolObjPtr pool, virStoragePoolDefPtr *lastDef)
+{
+ virStoragePoolDefPtr tmpDef;
+
+ if (pool->active) {
+ tmpDef = pool->newDef;
+ pool->newDef = *lastDef;
+ }
+ else {
+ tmpDef = pool->def;
+ pool->def = *lastDef;
+ }
+ *lastDef = tmpDef;
+}
static virStoragePoolObjPtr
virStoragePoolObjLoad(virStoragePoolObjListPtr pools,
const char *file,
@@ -1446,7 +1464,7 @@ virStoragePoolObjLoad(virStoragePoolObjListPtr pools,
return NULL;
}
- if (!(pool = virStoragePoolObjAssignDef(pools, def))) {
+ if (!(pool = virStoragePoolObjAssignDef(pools, &def))) {
virStoragePoolDefFree(def);
return NULL;
}
@@ -1455,6 +1473,7 @@ virStoragePoolObjLoad(virStoragePoolObjListPtr pools,
pool->configFile = strdup(path);
if (pool->configFile == NULL) {
virReportOOMError();
+ virStoragePoolObjDefRollBack(pool, &def);
virStoragePoolDefFree(def);
return NULL;
}
@@ -1462,13 +1481,14 @@ virStoragePoolObjLoad(virStoragePoolObjListPtr pools,
pool->autostartLink = strdup(autostartLink);
if (pool->autostartLink == NULL) {
virReportOOMError();
+ virStoragePoolObjDefRollBack(pool, &def);
virStoragePoolDefFree(def);
return NULL;
}
pool->autostart = virFileLinkPointsTo(pool->autostartLink,
pool->configFile);
-
+ virStoragePoolDefFree(def);
return pool;
}
diff --git a/src/conf/storage_conf.h b/src/conf/storage_conf.h
index 19bbd2c..dc9dc05 100644
--- a/src/conf/storage_conf.h
+++ b/src/conf/storage_conf.h
@@ -364,8 +364,8 @@ char *virStorageVolDefFormat(virStoragePoolDefPtr pool,
virStorageVolDefPtr def);
virStoragePoolObjPtr virStoragePoolObjAssignDef(virStoragePoolObjListPtr pools,
- virStoragePoolDefPtr def);
-
+ virStoragePoolDefPtr *def);
+void virStoragePoolObjDefRollBack(virStoragePoolObjPtr pool,virStoragePoolDefPtr *lastDef);
int virStoragePoolObjSaveDef(virStorageDriverStatePtr driver,
virStoragePoolObjPtr pool,
virStoragePoolDefPtr def);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 0b21cdc..391998c 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -975,6 +975,7 @@ virStoragePoolLoadAllConfigs;
virStoragePoolObjAssignDef;
virStoragePoolObjClearVols;
virStoragePoolObjDeleteDef;
+virStoragePoolObjDefRollBack;
virStoragePoolObjFindByName;
virStoragePoolObjFindByUUID;
virStoragePoolObjIsDuplicate;
diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
index 8c2d6e1..4ea22d5 100644
--- a/src/storage/storage_driver.c
+++ b/src/storage/storage_driver.c
@@ -526,6 +526,7 @@ storagePoolCreate(virConnectPtr conn,
virStoragePoolObjPtr pool = NULL;
virStoragePoolPtr ret = NULL;
virStorageBackendPtr backend;
+ int dupPool;
virCheckFlags(0, NULL);
@@ -533,7 +534,7 @@ storagePoolCreate(virConnectPtr conn,
if (!(def = virStoragePoolDefParseString(xml)))
goto cleanup;
- if (virStoragePoolObjIsDuplicate(&driver->pools, def, 1) < 0)
+ if ((dupPool = virStoragePoolObjIsDuplicate(&driver->pools, def, 1)) < 0)
goto cleanup;
if (virStoragePoolSourceFindDuplicate(&driver->pools, def) < 0)
@@ -542,22 +543,29 @@ storagePoolCreate(virConnectPtr conn,
if ((backend = virStorageBackendForType(def->type)) == NULL)
goto cleanup;
- if (!(pool = virStoragePoolObjAssignDef(&driver->pools, def)))
+ if (!(pool = virStoragePoolObjAssignDef(&driver->pools, &def)))
goto cleanup;
- def = NULL;
if (backend->startPool &&
backend->startPool(conn, pool) < 0) {
- virStoragePoolObjRemove(&driver->pools, pool);
- pool = NULL;
+ if (dupPool)
+ virStoragePoolObjDefRollBack(pool, &def);
+ else {
+ virStoragePoolObjRemove(&driver->pools, pool);
+ pool = NULL;
+ }
goto cleanup;
}
if (backend->refreshPool(conn, pool) < 0) {
if (backend->stopPool)
backend->stopPool(conn, pool);
- virStoragePoolObjRemove(&driver->pools, pool);
- pool = NULL;
+ if (dupPool)
+ virStoragePoolObjDefRollBack(pool, &def);
+ else {
+ virStoragePoolObjRemove(&driver->pools, pool);
+ pool = NULL;
+ }
goto cleanup;
}
VIR_INFO("Creating storage pool '%s'", pool->def->name);
@@ -582,6 +590,7 @@ storagePoolDefine(virConnectPtr conn,
virStoragePoolDefPtr def;
virStoragePoolObjPtr pool = NULL;
virStoragePoolPtr ret = NULL;
+ int dupPool;
virCheckFlags(0, NULL);
@@ -589,7 +598,7 @@ storagePoolDefine(virConnectPtr conn,
if (!(def = virStoragePoolDefParseString(xml)))
goto cleanup;
- if (virStoragePoolObjIsDuplicate(&driver->pools, def, 0) < 0)
+ if ((dupPool = virStoragePoolObjIsDuplicate(&driver->pools, def, 0)) < 0)
goto cleanup;
if (virStoragePoolSourceFindDuplicate(&driver->pools, def) < 0)
@@ -598,15 +607,18 @@ storagePoolDefine(virConnectPtr conn,
if (virStorageBackendForType(def->type) == NULL)
goto cleanup;
- if (!(pool = virStoragePoolObjAssignDef(&driver->pools, def)))
+ if (!(pool = virStoragePoolObjAssignDef(&driver->pools, &def)))
goto cleanup;
if (virStoragePoolObjSaveDef(driver, pool, def) < 0) {
- virStoragePoolObjRemove(&driver->pools, pool);
- def = NULL;
+ if (dupPool)
+ virStoragePoolObjDefRollBack(pool, &def);
+ else {
+ virStoragePoolObjRemove(&driver->pools, pool);
+ pool = NULL;
+ }
goto cleanup;
}
- def = NULL;
VIR_INFO("Defining storage pool '%s'", pool->def->name);
ret = virGetStoragePool(conn, pool->def->name, pool->def->uuid);
diff --git a/src/test/test_driver.c b/src/test/test_driver.c
index ce94a17..65dd606 100644
--- a/src/test/test_driver.c
+++ b/src/test/test_driver.c
@@ -594,10 +594,8 @@ static int testOpenDefault(virConnectPtr conn) {
goto error;
if (!(poolobj = virStoragePoolObjAssignDef(&privconn->pools,
- pooldef))) {
- virStoragePoolDefFree(pooldef);
+ &pooldef)))
goto error;
- }
if (testStoragePoolObjSetDefaults(poolobj) == -1) {
virStoragePoolObjUnlock(poolobj);
@@ -614,13 +612,14 @@ static int testOpenDefault(virConnectPtr conn) {
virNodeDeviceDefFree(nodedef);
goto error;
}
+ virStoragePoolDefFree(pooldef);
virNodeDeviceObjUnlock(nodeobj);
testDriverUnlock(privconn);
return VIR_DRV_OPEN_SUCCESS;
-
error:
+ virStoragePoolDefFree(pooldef);
virDomainObjListDeinit(&privconn->domains);
virNetworkObjListFree(&privconn->networks);
virInterfaceObjListFree(&privconn->ifaces);
@@ -1016,12 +1015,13 @@ static int testOpenFromFile(virConnectPtr conn,
}
if (!(pool = virStoragePoolObjAssignDef(&privconn->pools,
- def))) {
+ &def))) {
virStoragePoolDefFree(def);
goto error;
}
if (testStoragePoolObjSetDefaults(pool) == -1) {
+ virStoragePoolDefFree(def);
virStoragePoolObjUnlock(pool);
goto error;
}
@@ -1029,10 +1029,12 @@ static int testOpenFromFile(virConnectPtr conn,
/* Find storage volumes */
if (testOpenVolumesForPool(xml, ctxt, file, pool, i+1) < 0) {
+ virStoragePoolDefFree(def);
virStoragePoolObjUnlock(pool);
goto error;
}
+ virStoragePoolDefFree(def);
virStoragePoolObjUnlock(pool);
}
VIR_FREE(pools);
@@ -4123,9 +4125,8 @@ testStoragePoolCreate(virConnectPtr conn,
goto cleanup;
}
- if (!(pool = virStoragePoolObjAssignDef(&privconn->pools, def)))
+ if (!(pool = virStoragePoolObjAssignDef(&privconn->pools, &def)))
goto cleanup;
- def = NULL;
if (testStoragePoolObjSetDefaults(pool) == -1) {
virStoragePoolObjRemove(&privconn->pools, pool);
@@ -4164,9 +4165,8 @@ testStoragePoolDefine(virConnectPtr conn,
def->allocation = defaultPoolAlloc;
def->available = defaultPoolCap - defaultPoolAlloc;
- if (!(pool = virStoragePoolObjAssignDef(&privconn->pools, def)))
+ if (!(pool = virStoragePoolObjAssignDef(&privconn->pools, &def)))
goto cleanup;
- def = NULL;
if (testStoragePoolObjSetDefaults(pool) == -1) {
virStoragePoolObjRemove(&privconn->pools, pool);
--
1.7.4.1
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