[PATCH v2 1/2] storage: virStorageVolDefParse and storageVolCreateXML flags fix

[Kirill Shchetiniuk via Devel]

When the new storage was created using virsh with --validate option
following errors occurred:

 # virsh vol-create default --file vol-def.xml --validate
error: Failed to create vol from vol-def.xml
error: unsupported flags (0x4) in function virStorageVolDefParseXML

and after virStorageVolDefParse fix:

 # virsh vol-create default --file vol-def.xml --validate
error: Failed to create vol from vol-def.xml
error: unsupported flags (0x4) in function storageBackendCreateQemuImg

Clear the VIR_VOL_XML_PARSE_VALIDATE flag before
virStorageVolDefParseXML() and the VIR_STORAGE_VOL_CREATE_VALIDATE before
backend->buildVol() (traces down to storageBackendCreateQemuImg) calls,
as the XML schema validation is already complete within previous steps
and there is no validation later.

Signed-off-by: Kirill Shchetiniuk <kshch...@redhat.com>
---
 src/conf/storage_conf.c      | 2 ++
 src/storage/storage_driver.c | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c
index 68842004b7..3bbd727eb7 100644
--- a/src/conf/storage_conf.c
+++ b/src/conf/storage_conf.c
@@ -1409,6 +1409,8 @@ virStorageVolDefParse(virStoragePoolDef *pool,
                             "volume", &ctxt, "storagevol.rng", validate)))
         return NULL;
 
+    flags &= ~(VIR_VOL_XML_PARSE_VALIDATE);
+
     return virStorageVolDefParseXML(pool, ctxt, flags);
 }
 
diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
index 86c03762d2..2f5a26bbef 100644
--- a/src/storage/storage_driver.c
+++ b/src/storage/storage_driver.c
@@ -1877,6 +1877,7 @@ storageVolCreateXML(virStoragePoolPtr pool,
     virStorageVolPtr vol = NULL, newvol = NULL;
     g_autoptr(virStorageVolDef) voldef = NULL;
     unsigned int parseFlags = VIR_VOL_XML_PARSE_OPT_CAPACITY;
+    unsigned int buildFlags = flags;
 
     virCheckFlags(VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA |
                   VIR_STORAGE_VOL_CREATE_VALIDATE, NULL);
@@ -1953,7 +1954,8 @@ storageVolCreateXML(virStoragePoolPtr pool,
         voldef->building = true;
         virObjectUnlock(obj);
 
-        buildret = backend->buildVol(obj, buildvoldef, flags);
+        buildFlags &= ~(VIR_STORAGE_VOL_CREATE_VALIDATE);
+        buildret = backend->buildVol(obj, buildvoldef, buildFlags);
 
         VIR_FREE(buildvoldef);
 
-- 
2.48.1