diff --git a/python/plugins/processing/algs/gdal/OgrToPostGis.py b/python/plugins/processing/algs/gdal/OgrToPostGis.py
index 97eb909a9725..39012eedcc97 100644
--- a/python/plugins/processing/algs/gdal/OgrToPostGis.py
+++ b/python/plugins/processing/algs/gdal/OgrToPostGis.py
@@ -40,7 +40,8 @@ class OgrToPostGis(GdalAlgorithm):
     SHAPE_ENCODING = 'SHAPE_ENCODING'
     GTYPE = 'GTYPE'
     GEOMTYPE = ['', 'NONE', 'GEOMETRY', 'POINT', 'LINESTRING', 'POLYGON', 'GEOMETRYCOLLECTION', 'MULTIPOINT',
-                'MULTIPOLYGON', 'MULTILINESTRING', 'CIRCULARSTRING', 'COMPOUNDCURVE', 'CURVEPOLYGON', 'MULTICURVE', 'MULTISURFACE']
+                'MULTIPOLYGON', 'MULTILINESTRING', 'CIRCULARSTRING', 'COMPOUNDCURVE', 'CURVEPOLYGON', 'MULTICURVE',
+                'MULTISURFACE', 'CONVERT_TO_LINEAR', 'CONVERT_TO_CURVE']
     S_SRS = 'S_SRS'
     T_SRS = 'T_SRS'
     A_SRS = 'A_SRS'
@@ -70,6 +71,7 @@ class OgrToPostGis(GdalAlgorithm):
     INDEX = 'INDEX'
     SKIPFAILURES = 'SKIPFAILURES'
     PRECISION = 'PRECISION'
+    MAKEVALID = 'MAKEVALID'
     PROMOTETOMULTI = 'PROMOTETOMULTI'
     OPTIONS = 'OPTIONS'
 
@@ -161,6 +163,10 @@ def initAlgorithm(self, config=None):
                                                         self.tr(
                                                             'Continue after a failure, skipping the failed feature'),
                                                         defaultValue=False))
+        self.addParameter(QgsProcessingParameterBoolean(self.MAKEVALID,
+                                                        self.tr(
+                                                            'Validate geometries based on Simple Features specification'),
+                                                        defaultValue=False))
         self.addParameter(QgsProcessingParameterBoolean(self.PROMOTETOMULTI,
                                                         self.tr('Promote to Multipart'),
                                                         defaultValue=True))
@@ -248,6 +254,7 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
         index = self.parameterAsBoolean(parameters, self.INDEX, context)
         indexstring = "-lco SPATIAL_INDEX=OFF"
         skipfailures = self.parameterAsBoolean(parameters, self.SKIPFAILURES, context)
+        make_valid = self.parameterAsBoolean(parameters, self.MAKEVALID, context)
         promotetomulti = self.parameterAsBoolean(parameters, self.PROMOTETOMULTI, context)
         precision = self.parameterAsBoolean(parameters, self.PRECISION, context)
         options = self.parameterAsString(parameters, self.OPTIONS, context)
@@ -270,7 +277,11 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
             arguments.append(indexstring)
         if launder:
             arguments.append(launderstring)
-        if append:
+        if append and overwrite:
+            raise QgsProcessingException(
+                self.tr(
+                    'Only one of "Overwrite existing table" or "Append to existing table" can be enabled at a time.'))
+        elif append:
             arguments.append('-append')
         if include_fields:
             arguments.append(fields_string)
@@ -323,7 +334,16 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
         if len(gt) > 0:
             arguments.append('-gt')
             arguments.append(gt)
-        if promotetomulti:
+        if make_valid:
+            arguments.append('-makevalid')
+        if promotetomulti and self.GEOMTYPE[self.parameterAsEnum(parameters, self.GTYPE, context)]:
+            if self.GEOMTYPE[self.parameterAsEnum(parameters, self.GTYPE, context)] == 'CONVERT_TO_LINEAR':
+                arguments.append('-nlt PROMOTE_TO_MULTI')
+            else:
+                raise QgsProcessingException(
+                    self.tr(
+                        'Only one of "Promote to Multipart" or "Output geometry type" (excluding Convert to Linear) can be enabled.'))
+        elif promotetomulti and not self.GEOMTYPE[self.parameterAsEnum(parameters, self.GTYPE, context)]:
             arguments.append('-nlt PROMOTE_TO_MULTI')
         if precision is False:
             arguments.append('-lco PRECISION=NO')
diff --git a/python/plugins/processing/algs/gdal/ogr2ogrtopostgislist.py b/python/plugins/processing/algs/gdal/ogr2ogrtopostgislist.py
index 5f56db6abe76..c6645a8bcf8c 100644
--- a/python/plugins/processing/algs/gdal/ogr2ogrtopostgislist.py
+++ b/python/plugins/processing/algs/gdal/ogr2ogrtopostgislist.py
@@ -47,7 +47,8 @@ class Ogr2OgrToPostGisList(GdalAlgorithm):
     SHAPE_ENCODING = 'SHAPE_ENCODING'
     GTYPE = 'GTYPE'
     GEOMTYPE = ['', 'NONE', 'GEOMETRY', 'POINT', 'LINESTRING', 'POLYGON', 'GEOMETRYCOLLECTION', 'MULTIPOINT',
-                'MULTIPOLYGON', 'MULTILINESTRING', 'CIRCULARSTRING', 'COMPOUNDCURVE', 'CURVEPOLYGON', 'MULTICURVE', 'MULTISURFACE']
+                'MULTIPOLYGON', 'MULTILINESTRING', 'CIRCULARSTRING', 'COMPOUNDCURVE', 'CURVEPOLYGON', 'MULTICURVE',
+                'MULTISURFACE', 'CONVERT_TO_LINEAR', 'CONVERT_TO_CURVE']
     S_SRS = 'S_SRS'
     T_SRS = 'T_SRS'
     A_SRS = 'A_SRS'
@@ -76,6 +77,7 @@ class Ogr2OgrToPostGisList(GdalAlgorithm):
     INDEX = 'INDEX'
     SKIPFAILURES = 'SKIPFAILURES'
     PRECISION = 'PRECISION'
+    MAKEVALID = 'MAKEVALID'
     PROMOTETOMULTI = 'PROMOTETOMULTI'
     OPTIONS = 'OPTIONS'
 
@@ -106,12 +108,14 @@ def initAlgorithm(self, config=None):
 
         schema_param = QgsProcessingParameterDatabaseSchema(
             self.SCHEMA,
-            self.tr('Schema (schema name)'), defaultValue='public', connectionParameterName=self.DATABASE, optional=True)
+            self.tr('Schema (schema name)'), defaultValue='public', connectionParameterName=self.DATABASE,
+            optional=True)
         self.addParameter(schema_param)
 
         table_param = QgsProcessingParameterDatabaseTable(
             self.TABLE,
-            self.tr('Table to import to (leave blank to use layer name)'), defaultValue=None, connectionParameterName=self.DATABASE,
+            self.tr('Table to import to (leave blank to use layer name)'), defaultValue=None,
+            connectionParameterName=self.DATABASE,
             schemaParameterName=self.SCHEMA, optional=True, allowNewTableNames=True)
         self.addParameter(table_param)
 
@@ -165,6 +169,10 @@ def initAlgorithm(self, config=None):
                                                         self.tr(
                                                             'Continue after a failure, skipping the failed feature'),
                                                         defaultValue=False))
+        self.addParameter(QgsProcessingParameterBoolean(self.MAKEVALID,
+                                                        self.tr(
+                                                            'Validate geometries based on Simple Features specification'),
+                                                        defaultValue=False))
         self.addParameter(QgsProcessingParameterBoolean(self.PROMOTETOMULTI,
                                                         self.tr('Promote to Multipart'),
                                                         defaultValue=True))
@@ -206,7 +214,8 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
             md = QgsProviderRegistry.instance().providerMetadata('postgres')
             conn = md.createConnection(connection_name)
         except QgsProviderConnectionException:
-            raise QgsProcessingException(self.tr('Could not retrieve connection details for {}').format(connection_name))
+            raise QgsProcessingException(
+                self.tr('Could not retrieve connection details for {}').format(connection_name))
 
         uri = conn.uri()
 
@@ -239,6 +248,7 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
         index = self.parameterAsBoolean(parameters, self.INDEX, context)
         indexstring = "-lco SPATIAL_INDEX=OFF"
         skipfailures = self.parameterAsBoolean(parameters, self.SKIPFAILURES, context)
+        make_valid = self.parameterAsBoolean(parameters, self.MAKEVALID, context)
         promotetomulti = self.parameterAsBoolean(parameters, self.PROMOTETOMULTI, context)
         precision = self.parameterAsBoolean(parameters, self.PRECISION, context)
         options = self.parameterAsString(parameters, self.OPTIONS, context)
@@ -265,7 +275,11 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
             arguments.append(indexstring)
         if launder:
             arguments.append(launderstring)
-        if append:
+        if append and overwrite:
+            raise QgsProcessingException(
+                self.tr(
+                    'Only one of "Overwrite existing table" or "Append to existing table" can be enabled at a time.'))
+        elif append:
             arguments.append('-append')
         if addfields:
             arguments.append('-addfields')
@@ -316,7 +330,17 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
         if len(gt) > 0:
             arguments.append('-gt')
             arguments.append(gt)
-        if promotetomulti:
+        if make_valid:
+            arguments.append('-makevalid')
+        if promotetomulti and self.GEOMTYPE[self.parameterAsEnum(parameters, self.GTYPE, context)]:
+            if self.GEOMTYPE[self.parameterAsEnum(parameters, self.GTYPE, context)] == 'CONVERT_TO_LINEAR':
+                arguments.append('-nlt PROMOTE_TO_MULTI')
+            else:
+                raise QgsProcessingException(
+                    self.tr(
+                        'Only one of "Promote to Multipart" or "Output geometry type" (excluding Convert to Linear) can be enabled.'))
+
+        elif promotetomulti and not self.GEOMTYPE[self.parameterAsEnum(parameters, self.GTYPE, context)]:
             arguments.append('-nlt PROMOTE_TO_MULTI')
         if precision is False:
             arguments.append('-lco PRECISION=NO')
diff --git a/python/plugins/processing/tests/GdalAlgorithmsVectorTest.py b/python/plugins/processing/tests/GdalAlgorithmsVectorTest.py
index abebefb4c3f9..c2f535a40fd9 100644
--- a/python/plugins/processing/tests/GdalAlgorithmsVectorTest.py
+++ b/python/plugins/processing/tests/GdalAlgorithmsVectorTest.py
@@ -116,9 +116,10 @@ def testOgr2Ogr(self):
                  multi_source])
 
             self.assertEqual(
-                alg.getConsoleCommands({'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
-                                        'CONVERT_ALL_LAYERS': True,
-                                        'OUTPUT': outdir + '/check.gpkg'}, context, feedback),
+                alg.getConsoleCommands(
+                    {'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
+                     'CONVERT_ALL_LAYERS': True,
+                     'OUTPUT': outdir + '/check.gpkg'}, context, feedback),
                 ['ogr2ogr',
                  '-f "GPKG" -oo X_POSSIBLE_NAMES=geom_x -oo Y_POSSIBLE_NAMES=geom_y ' + outdir + '/check.gpkg ' +
                  source])
@@ -370,9 +371,10 @@ def testBuffer(self):
                  '-explodecollections -f "ESRI Shapefile"'])
 
             self.assertEqual(
-                alg.getConsoleCommands({'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
-                                        'DISTANCE': 5,
-                                        'OUTPUT': outdir + '/check.shp'}, context, feedback),
+                alg.getConsoleCommands(
+                    {'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
+                     'DISTANCE': 5,
+                     'OUTPUT': outdir + '/check.shp'}, context, feedback),
                 ['ogr2ogr',
                  outdir + '/check.shp ' +
                  source + ' ' +
@@ -589,10 +591,11 @@ def testDissolve(self):
                  'GROUP BY """my_field"""" "my opts" -f "ESRI Shapefile"'])
 
             self.assertEqual(
-                alg.getConsoleCommands({'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
-                                        'FIELD': 'my_field',
-                                        'OPTIONS': 'my opts',
-                                        'OUTPUT': outdir + '/check.shp'}, context, feedback),
+                alg.getConsoleCommands(
+                    {'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
+                     'FIELD': 'my_field',
+                     'OPTIONS': 'my opts',
+                     'OUTPUT': outdir + '/check.shp'}, context, feedback),
                 ['ogr2ogr',
                  outdir + '/check.shp ' +
                  source + ' ' +
@@ -614,6 +617,7 @@ def testOgr2PostGis(self):
         context = QgsProcessingContext()
         feedback = QgsProcessingFeedback()
         source = os.path.join(testDataPath, 'polys.gml')
+        source_line = os.path.join(testDataPath, 'multilines.gml')
         source_with_space = os.path.join(testDataPath, 'filename with spaces.gml')
         alg = OgrToPostGis()
         alg.initAlgorithm()
@@ -623,14 +627,14 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source_with_space}, context, feedback),
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 "' + source_with_space + '" filename_with_spaces '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.filename_with_spaces -nlt PROMOTE_TO_MULTI'])
+                                                  '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.filename_with_spaces -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -638,7 +642,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=google.com port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -646,7 +650,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=3333 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -654,7 +658,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public user=kevin_bacon" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -662,7 +666,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 dbname=secret_stuff active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -670,7 +674,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 password=passw0rd active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -678,7 +682,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=desktop" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln desktop.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln desktop.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -686,7 +690,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.out_table -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.out_table -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -694,7 +698,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -702,7 +706,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=new_fid -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=new_fid -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -711,7 +715,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=objectid -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=objectid -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -720,7 +724,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=new_id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=new_id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -728,7 +732,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=my_geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=my_geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -736,7 +740,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=3 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -744,7 +748,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -simplify 5 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -simplify 5 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -752,7 +756,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -segmentize 4 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -segmentize 4 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -760,7 +764,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -spat 1.0 2.0 3.0 4.0 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -spat 1.0 2.0 3.0 4.0 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -768,7 +772,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 -select "f1,f2" '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -776,7 +780,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -where "0=1" -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -where "0=1" -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -784,7 +788,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -gt 2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -gt 2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -792,15 +796,16 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
+                                    'OVERWRITE': False,
                                     'APPEND': True}, context, feedback),
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-append -overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-append -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -808,7 +813,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-addfields -overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-addfields -overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -816,7 +821,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-lco LAUNDER=NO -overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-lco LAUNDER=NO -overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -824,7 +829,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-lco SPATIAL_INDEX=OFF -overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-lco SPATIAL_INDEX=OFF -overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -832,7 +837,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -skipfailures -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -skipfailures -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -840,7 +845,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -848,7 +853,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI -lco PRECISION=NO'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI -lco PRECISION=NO'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -856,7 +861,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI blah'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI blah'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -864,15 +869,24 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES --config SHAPE_ENCODING blah -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
+                                    'PROMOTETOMULTI': False,
                                     'GTYPE': 4}, context, feedback),
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -nlt LINESTRING -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -nlt LINESTRING -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2'])
+
+        self.assertEqual(
+            alg.getConsoleCommands({'INPUT': source_line,
+                                    'GTYPE': 15}, context, feedback),
+            ['ogr2ogr',
+             '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
+             '-lco DIM=2 ' + source_line + ' multilines '
+                                           '-overwrite -nlt CONVERT_TO_LINEAR -lco GEOMETRY_NAME=geom -lco FID=id -nln public.multilines -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -880,7 +894,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -888,7 +902,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
 
         custom_crs = 'proj4: +proj=utm +zone=36 +south +a=6378249.145 +b=6356514.966398753 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs'
         self.assertEqual(
@@ -897,7 +911,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:20936 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:20936 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -905,7 +919,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -t_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -t_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -913,7 +927,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -t_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -t_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
 
         custom_crs = 'proj4: +proj=utm +zone=36 +south +a=6378249.145 +b=6356514.966398753 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs'
         self.assertEqual(
@@ -922,7 +936,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -t_srs EPSG:20936 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -t_srs EPSG:20936 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -930,7 +944,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -s_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -s_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source,
@@ -938,7 +952,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -s_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -s_srs EPSG:3111 -nlt PROMOTE_TO_MULTI'])
 
         custom_crs = 'proj4: +proj=utm +zone=36 +south +a=6378249.145 +b=6356514.966398753 +towgs84=-143,-90,-294,0,0,0,0 +units=m +no_defs'
         self.assertEqual(
@@ -947,7 +961,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -s_srs EPSG:20936 -nlt PROMOTE_TO_MULTI'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -s_srs EPSG:20936 -nlt PROMOTE_TO_MULTI'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
@@ -955,7 +969,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:3111 -nlt PROMOTE_TO_MULTI -oo X_POSSIBLE_NAMES=geom_x -oo Y_POSSIBLE_NAMES=geom_y'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:3111 -nlt PROMOTE_TO_MULTI -oo X_POSSIBLE_NAMES=geom_x -oo Y_POSSIBLE_NAMES=geom_y'])
 
         self.assertEqual(
             alg.getConsoleCommands({'INPUT': source + '|credential:X=Y|credential:Z=A',
@@ -963,7 +977,7 @@ def testOgr2PostGis(self):
             ['ogr2ogr',
              '-progress --config PG_USE_COPY YES -f PostgreSQL "PG:host=localhost port=5432 active_schema=public" '
              '-lco DIM=2 ' + source + ' polys2 '
-             '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:3111 -nlt PROMOTE_TO_MULTI --config X Y --config Z A'])
+                                      '-overwrite -lco GEOMETRY_NAME=geom -lco FID=id -nln public.polys2 -a_srs EPSG:3111 -nlt PROMOTE_TO_MULTI --config X Y --config Z A'])
 
     def testOffsetCurve(self):
         context = QgsProcessingContext()
@@ -985,9 +999,10 @@ def testOffsetCurve(self):
                  '-f "ESRI Shapefile"'])
 
             self.assertEqual(
-                alg.getConsoleCommands({'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
-                                        'DISTANCE': 5,
-                                        'OUTPUT': outdir + '/check.shp'}, context, feedback),
+                alg.getConsoleCommands(
+                    {'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
+                     'DISTANCE': 5,
+                     'OUTPUT': outdir + '/check.shp'}, context, feedback),
                 ['ogr2ogr',
                  outdir + '/check.shp ' +
                  source + ' ' +
@@ -1057,10 +1072,11 @@ def testOneSidedBuffer(self):
                  'FROM """polys2""" GROUP BY """total population"""" -f "ESRI Shapefile"'])
 
             self.assertEqual(
-                alg.getConsoleCommands({'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
-                                        'DISTANCE': 5,
-                                        'FIELD': 'total population',
-                                        'OUTPUT': outdir + '/check.shp'}, context, feedback),
+                alg.getConsoleCommands(
+                    {'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
+                     'DISTANCE': 5,
+                     'FIELD': 'total population',
+                     'OUTPUT': outdir + '/check.shp'}, context, feedback),
                 ['ogr2ogr',
                  outdir + '/check.shp ' +
                  source + ' ' +
@@ -1098,9 +1114,10 @@ def testPointsAlongLines(self):
                  '-f "ESRI Shapefile"'])
 
             self.assertEqual(
-                alg.getConsoleCommands({'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
-                                        'DISTANCE': 0.2,
-                                        'OUTPUT': outdir + '/check.shp'}, context, feedback),
+                alg.getConsoleCommands(
+                    {'INPUT': source + '|option:X_POSSIBLE_NAMES=geom_x|option:Y_POSSIBLE_NAMES=geom_y',
+                     'DISTANCE': 0.2,
+                     'OUTPUT': outdir + '/check.shp'}, context, feedback),
                 ['ogr2ogr',
                  outdir + '/check.shp ' +
                  source + ' ' +