diff --git a/src/Disks/ObjectStorages/DiskObjectStorage.cpp b/src/Disks/ObjectStorages/DiskObjectStorage.cpp
index 913fd76bf8a..db8f90e777d 100644
--- a/src/Disks/ObjectStorages/DiskObjectStorage.cpp
+++ b/src/Disks/ObjectStorages/DiskObjectStorage.cpp
@@ -282,7 +282,10 @@ String DiskObjectStorage::getUniqueId(const String & path) const
 bool DiskObjectStorage::checkUniqueId(const String & id) const
 {
     if (!id.starts_with(object_storage_root_path))
+    {
+        LOG_DEBUG(log, "Blob with id {} doesn't start with blob storage prefix {}", id, object_storage_root_path);
         return false;
+    }
 
     auto object = StoredObject::create(*object_storage, id, {}, {}, true);
     return object_storage->exists(object);
diff --git a/src/IO/WriteBufferFromS3.cpp b/src/IO/WriteBufferFromS3.cpp
index cc46af361cd..b09abda85db 100644
--- a/src/IO/WriteBufferFromS3.cpp
+++ b/src/IO/WriteBufferFromS3.cpp
@@ -346,9 +346,10 @@ void WriteBufferFromS3::completeMultipartUpload()
         LOG_TRACE(log, "Multipart upload has completed. Bucket: {}, Key: {}, Upload_id: {}, Parts: {}", bucket, key, multipart_upload_id, tags.size());
     else
     {
-        throw Exception(ErrorCodes::S3_ERROR, "{} Tags:{}",
-            outcome.GetError().GetMessage(),
-            fmt::join(tags.begin(), tags.end(), " "));
+        throw S3Exception(
+            outcome.GetError().GetErrorType(),
+            "Message: {}, Key: {}, Bucket: {}, Tags: {}",
+            outcome.GetError().GetMessage(), key, bucket, fmt::join(tags.begin(), tags.end(), " "));
     }
 }
 
@@ -433,7 +434,10 @@ void WriteBufferFromS3::processPutRequest(const PutObjectTask & task)
     if (outcome.IsSuccess())
         LOG_TRACE(log, "Single part upload has completed. Bucket: {}, Key: {}, Object size: {}, WithPool: {}", bucket, key, task.req.GetContentLength(), with_pool);
     else
-        throw S3Exception(outcome.GetError().GetMessage(), outcome.GetError().GetErrorType());
+        throw S3Exception(
+            outcome.GetError().GetErrorType(),
+            "Message: {}, Key: {}, Bucket: {}, Object size: {}, WithPool: {}",
+            outcome.GetError().GetMessage(), key, bucket, task.req.GetContentLength(), with_pool);
 }
 
 void WriteBufferFromS3::waitForReadyBackGroundTasks()
diff --git a/src/Storages/MergeTree/DataPartsExchange.cpp b/src/Storages/MergeTree/DataPartsExchange.cpp
index 9f8313a4700..ecb692aaf9b 100644
--- a/src/Storages/MergeTree/DataPartsExchange.cpp
+++ b/src/Storages/MergeTree/DataPartsExchange.cpp
@@ -399,7 +399,7 @@ MergeTreeData::DataPartPtr Service::findPart(const String & name)
     throw Exception(ErrorCodes::NO_SUCH_DATA_PART, "No part {} in table", name);
 }
 
-MergeTreeData::MutableDataPartPtr Fetcher::fetchPart(
+MergeTreeData::MutableDataPartPtr Fetcher::fetchSelectedPart(
     const StorageMetadataPtr & metadata_snapshot,
     ContextPtr context,
     const String & part_name,
@@ -420,6 +420,11 @@ MergeTreeData::MutableDataPartPtr Fetcher::fetchPart(
     if (blocker.isCancelled())
         throw Exception("Fetching of part was cancelled", ErrorCodes::ABORTED);
 
+    const auto data_settings = data.getSettings();
+
+    if (data_settings->allow_remote_fs_zero_copy_replication && !try_zero_copy)
+        LOG_WARNING(log, "Zero copy replication enabled, but trying to fetch part {} without zero copy", part_name);
+
     /// It should be "tmp-fetch_" and not "tmp_fetch_", because we can fetch part to detached/,
     /// but detached part name prefix should not contain underscore.
     static const String TMP_PREFIX = "tmp-fetch_";
@@ -429,7 +434,6 @@ MergeTreeData::MutableDataPartPtr Fetcher::fetchPart(
 
     /// Validation of the input that may come from malicious replica.
     auto part_info = MergeTreePartInfo::fromPartName(part_name, data.format_version);
-    const auto data_settings = data.getSettings();
 
     Poco::URI uri;
     uri.setScheme(interserver_scheme);
@@ -465,6 +469,7 @@ MergeTreeData::MutableDataPartPtr Fetcher::fetchPart(
             capability.push_back(toString(disk->getDataSourceDescription().type));
         }
     }
+
     if (!capability.empty())
     {
         ::sort(capability.begin(), capability.end());
@@ -474,6 +479,9 @@ MergeTreeData::MutableDataPartPtr Fetcher::fetchPart(
     }
     else
     {
+        if (data_settings->allow_remote_fs_zero_copy_replication)
+            LOG_WARNING(log, "Cannot select any zero-copy disk for {}", part_name);
+
         try_zero_copy = false;
     }
 
@@ -585,7 +593,7 @@ MergeTreeData::MutableDataPartPtr Fetcher::fetchPart(
             temporary_directory_lock = {};
 
             /// Try again but without zero-copy
-            return fetchPart(metadata_snapshot, context, part_name, replica_path, host, port, timeouts,
+            return fetchSelectedPart(metadata_snapshot, context, part_name, replica_path, host, port, timeouts,
                 user, password, interserver_scheme, throttler, to_detached, tmp_prefix, nullptr, false, disk);
         }
     }
diff --git a/src/Storages/MergeTree/DataPartsExchange.h b/src/Storages/MergeTree/DataPartsExchange.h
index 0e19bf4cdcd..e2582c42dfb 100644
--- a/src/Storages/MergeTree/DataPartsExchange.h
+++ b/src/Storages/MergeTree/DataPartsExchange.h
@@ -66,7 +66,7 @@ public:
     explicit Fetcher(StorageReplicatedMergeTree & data_) : data(data_), log(&Poco::Logger::get("Fetcher")) {}
 
     /// Downloads a part to tmp_directory. If to_detached - downloads to the `detached` directory.
-    MergeTreeData::MutableDataPartPtr fetchPart(
+    MergeTreeData::MutableDataPartPtr fetchSelectedPart(
         const StorageMetadataPtr & metadata_snapshot,
         ContextPtr context,
         const String & part_name,
diff --git a/src/Storages/StorageReplicatedMergeTree.cpp b/src/Storages/StorageReplicatedMergeTree.cpp
index 0b05428ceaf..3491f6c9d4a 100644
--- a/src/Storages/StorageReplicatedMergeTree.cpp
+++ b/src/Storages/StorageReplicatedMergeTree.cpp
@@ -2180,7 +2180,7 @@ bool StorageReplicatedMergeTree::executeReplaceRange(const LogEntry & entry)
             if (interserver_scheme != address.scheme)
                 throw Exception("Interserver schemas are different '" + interserver_scheme + "' != '" + address.scheme + "', can't fetch part from " + address.host, ErrorCodes::LOGICAL_ERROR);
 
-            part_desc->res_part = fetcher.fetchPart(
+            part_desc->res_part = fetcher.fetchSelectedPart(
                 metadata_snapshot, getContext(), part_desc->found_new_part_name, source_replica_path,
                 address.host, address.replication_port, timeouts, credentials->getUser(), credentials->getPassword(),
                 interserver_scheme, replicated_fetches_throttler, false, TMP_PREFIX + "fetch_");
@@ -2299,7 +2299,7 @@ void StorageReplicatedMergeTree::executeClonePartFromShard(const LogEntry & entr
                                 + "' != '" + address.scheme + "', can't fetch part from " + address.host,
                                 ErrorCodes::LOGICAL_ERROR);
 
-            return fetcher.fetchPart(
+            return fetcher.fetchSelectedPart(
                 metadata_snapshot, getContext(), entry.new_part_name, source_replica_path,
                 address.host, address.replication_port,
                 timeouts, credentials->getUser(), credentials->getPassword(), interserver_scheme,
@@ -3934,7 +3934,7 @@ bool StorageReplicatedMergeTree::fetchPart(const String & part_name, const Stora
                     + "' != '" + address.scheme + "', can't fetch part from " + address.host,
                     ErrorCodes::INTERSERVER_SCHEME_DOESNT_MATCH);
 
-            return fetcher.fetchPart(
+            return fetcher.fetchSelectedPart(
                 metadata_snapshot,
                 getContext(),
                 part_name,
@@ -4071,7 +4071,7 @@ DataPartStoragePtr StorageReplicatedMergeTree::fetchExistsPart(
         currently_fetching_parts.erase(part_name);
     });
 
-    LOG_DEBUG(log, "Fetching part {} from {}", part_name, source_replica_path);
+    LOG_DEBUG(log, "Fetching already known part {} from {}", part_name, source_replica_path);
 
     TableLockHolder table_lock_holder = lockForShare(RWLockImpl::NO_QUERY, getSettings()->lock_acquire_timeout_for_background_operations);
 
@@ -4101,7 +4101,7 @@ DataPartStoragePtr StorageReplicatedMergeTree::fetchExistsPart(
                 + "' != '" + address.scheme + "', can't fetch part from " + address.host,
                 ErrorCodes::INTERSERVER_SCHEME_DOESNT_MATCH);
 
-        return fetcher.fetchPart(
+        return fetcher.fetchSelectedPart(
             metadata_snapshot, getContext(), part_name, source_replica_path,
             address.host, address.replication_port,
             timeouts, credentials->getUser(), credentials->getPassword(),