Do not charge for pubdata in Validium mode

core/lib/zksync_core/src/fee_model.rs

@@ -64,11 +64,15 @@ impl BatchFeeModelInputProvider for MainNodeFeeInputProvider {
                 config,
                 l1_gas_price: self.provider.estimate_effective_gas_price(),
             }),
-            FeeModelConfig::V2(config) => FeeParams::V2(FeeParamsV2 {
-                config,
-                l1_gas_price: self.provider.estimate_effective_gas_price(),
-                l1_pubdata_price: self.provider.estimate_effective_pubdata_price(),
-            }),
+            FeeModelConfig::V2(config) => {
+                let validium_mode = std::env::var("VALIDIUM_MODE") == Ok("true".to_owned());
+                FeeParams::V2(FeeParamsV2 {
+                    config,
+                    l1_gas_price: self.provider.estimate_effective_gas_price(),
+                    l1_pubdata_price: self.provider.estimate_effective_pubdata_price()
+                        * !validium_mode as u64,
+                })
+            }
         }
     }
 }

etc/env/base/chain.toml

@@ -52,21 +52,25 @@ minimal_l2_gas_price=100000000
 # The constant that represents the possibility that a batch can be sealed because of overuse of computation resources.
 # It has range from 0 to 1. If it is 0, the compute will not depend on the cost for closing the batch.
 # If it is 1, the gas limit per batch will have to cover the entire cost of closing the batch.
-compute_overhead_part=0.0
+# compute_overhead_part=0.0
+compute_overhead_part=1.0
 
 # The constant that represents the possibility that a batch can be sealed because of overuse of pubdata.
 # It has range from 0 to 1. If it is 0, the pubdata will not depend on the cost for closing the batch.
 # If it is 1, the pubdata limit per batch will have to cover the entire cost of closing the batch.
-pubdata_overhead_part=1.0
+# pubdata_overhead_part=1.0
+pubdata_overhead_part=0
 
 # The constant amount of L1 gas that is used as the overhead for the batch. It includes the price for batch verification, etc.
-batch_overhead_l1_gas=800000
+# batch_overhead_l1_gas=800000
+batch_overhead_l1_gas=1000000
 
 # The maximum amount of gas that can be used by the batch. This value is derived from the circuits limitation per batch.
 max_gas_per_batch=200000000
 
 # The maximum amount of pubdata that can be used by the batch. Note that if the calldata is used as pubdata, this variable should not exceed 128kb.
-max_pubdata_per_batch=100000
+# max_pubdata_per_batch=100000
+max_pubdata_per_batch=1000000000000
 
 # The version of the fee model to use. 
 # - `V1`, the first model that was used in zkSync Era. In this fee model, the pubdata price must be pegged to the L1 gas price.
@@ -75,7 +79,7 @@ max_pubdata_per_batch=100000
 # - `V2`, the second model that was used in zkSync Era. There the pubdata price might be independent from the L1 gas price. Also,
 # The fair L2 gas price is expected to both the proving/computation price for the operator and the costs that come from
 # processing the batch on L1.
-fee_model_version="V1"
+fee_model_version="V2"
 
 # Max number of computational gas that validation step is allowed to take.
 validation_computational_gas_limit=300000