diff --git a/mediarepo-daemon/Cargo.lock b/mediarepo-daemon/Cargo.lock
index fe95263..a59ac9e 100644
--- a/mediarepo-daemon/Cargo.lock
+++ b/mediarepo-daemon/Cargo.lock
@@ -1136,8 +1136,8 @@ checksum = "a3e378b66a060d48947b590737b30a1be76706c8dd7b8ba0f2fe3989c68a853f"
 
 [[package]]
 name = "mediarepo-api"
-version = "0.23.0"
-source = "git+https://github.com/Trivernis/mediarepo-api.git?rev=773e2132c80a80ad90a0585c50baf499c7ceb53f#773e2132c80a80ad90a0585c50baf499c7ceb53f"
+version = "0.24.1"
+source = "git+https://github.com/Trivernis/mediarepo-api.git?rev=91d8182548bfdb19f2de9afd8c29d5c8ebd48993#91d8182548bfdb19f2de9afd8c29d5c8ebd48993"
 dependencies = [
  "bromine",
  "chrono",
diff --git a/mediarepo-daemon/mediarepo-core/Cargo.toml b/mediarepo-daemon/mediarepo-core/Cargo.toml
index b33428b..5403619 100644
--- a/mediarepo-daemon/mediarepo-core/Cargo.toml
+++ b/mediarepo-daemon/mediarepo-core/Cargo.toml
@@ -39,7 +39,7 @@ features = ["fs", "io-util", "io-std"]
 
 [dependencies.mediarepo-api]
 git = "https://github.com/Trivernis/mediarepo-api.git"
-rev = "773e2132c80a80ad90a0585c50baf499c7ceb53f"
+rev = "91d8182548bfdb19f2de9afd8c29d5c8ebd48993"
 features = ["bromine"]
 
 [features]
diff --git a/mediarepo-daemon/mediarepo-core/src/fs/file_hash_store.rs b/mediarepo-daemon/mediarepo-core/src/fs/file_hash_store.rs
index d98fb4d..6305506 100644
--- a/mediarepo-daemon/mediarepo-core/src/fs/file_hash_store.rs
+++ b/mediarepo-daemon/mediarepo-core/src/fs/file_hash_store.rs
@@ -56,6 +56,27 @@ impl FileHashStore {
         Ok((extension, reader))
     }
 
+    /// Renames a file
+    pub async fn rename_file(
+        &self,
+        src_descriptor: &[u8],
+        dst_descriptor: &[u8],
+    ) -> RepoResult<()> {
+        let src_path = self.descriptor_to_file_path(src_descriptor);
+        if !src_path.exists() {
+            tracing::warn!("file {:?} doesn't exist", src_path);
+            return Ok(());
+        }
+        let dst_path = self.descriptor_to_file_path(dst_descriptor);
+        let dst_parent = dst_path.parent().unwrap();
+        if !dst_parent.exists() {
+            fs::create_dir(dst_parent).await?;
+        }
+        fs::rename(src_path, dst_path).await?;
+
+        Ok(())
+    }
+
     /// Scans the size of the folder
     #[inline]
     pub async fn get_size(&self) -> RepoResult<u64> {
diff --git a/mediarepo-daemon/mediarepo-core/src/fs/thumbnail_store.rs b/mediarepo-daemon/mediarepo-core/src/fs/thumbnail_store.rs
index 92a0563..ce8a414 100644
--- a/mediarepo-daemon/mediarepo-core/src/fs/thumbnail_store.rs
+++ b/mediarepo-daemon/mediarepo-core/src/fs/thumbnail_store.rs
@@ -1,5 +1,6 @@
 use crate::error::RepoResult;
 use crate::utils::get_folder_size;
+use std::fmt::Debug;
 use std::io::Result;
 use std::path::PathBuf;
 use tokio::fs;
@@ -77,6 +78,23 @@ impl ThumbnailStore {
         Ok(entries)
     }
 
+    /// Renames a thumbnail parent
+    #[tracing::instrument(level = "debug")]
+    pub async fn rename_parent<S1: AsRef<str> + Debug, S2: AsRef<str> + Debug>(
+        &self,
+        src: S1,
+        dst: S2,
+    ) -> Result<()> {
+        let src_dir = self.path.join(src.as_ref());
+        if !src_dir.exists() {
+            tracing::warn!("directory {:?} doesn't exist", src_dir);
+            return Ok(());
+        }
+        let dst_dir = self.path.join(dst.as_ref());
+
+        fs::rename(src_dir, dst_dir).await
+    }
+
     /// Returns the size of the folder
     #[tracing::instrument(level = "debug")]
     pub async fn get_size(&self) -> RepoResult<u64> {
diff --git a/mediarepo-daemon/mediarepo-model/src/content_descriptor.rs b/mediarepo-daemon/mediarepo-model/src/content_descriptor.rs
index fe4b70d..2762278 100644
--- a/mediarepo-daemon/mediarepo-model/src/content_descriptor.rs
+++ b/mediarepo-daemon/mediarepo-model/src/content_descriptor.rs
@@ -1,4 +1,5 @@
 use crate::file::File;
+use mediarepo_core::content_descriptor::convert_v1_descriptor_to_v2;
 use mediarepo_core::error::RepoResult;
 use mediarepo_database::entities::content_descriptor;
 use mediarepo_database::entities::file;
@@ -6,17 +7,28 @@ use sea_orm::prelude::*;
 use sea_orm::{DatabaseConnection, Set};
 use std::fmt::Debug;
 
-pub struct Hash {
+pub struct ContentDescriptor {
     db: DatabaseConnection,
     model: content_descriptor::Model,
 }
 
-impl Hash {
+impl ContentDescriptor {
     #[tracing::instrument(level = "trace")]
     pub(crate) fn new(db: DatabaseConnection, model: content_descriptor::Model) -> Self {
         Self { db, model }
     }
 
+    pub async fn all(db: DatabaseConnection) -> RepoResult<Vec<Self>> {
+        let descriptors = content_descriptor::Entity::find()
+            .all(&db)
+            .await?
+            .into_iter()
+            .map(|model| Self::new(db.clone(), model))
+            .collect();
+
+        Ok(descriptors)
+    }
+
     /// Searches for the hash by id
     #[tracing::instrument(level = "debug", skip(db))]
     pub async fn by_id(db: DatabaseConnection, id: i64) -> RepoResult<Option<Self>> {
@@ -75,4 +87,15 @@ impl Hash {
 
         Ok(file)
     }
+
+    pub async fn convert_v1_to_v2(&mut self) -> RepoResult<()> {
+        let descriptor = convert_v1_descriptor_to_v2(&self.model.descriptor)?;
+        let active_model = content_descriptor::ActiveModel {
+            id: Set(self.id()),
+            descriptor: Set(descriptor),
+        };
+        self.model = active_model.update(&self.db).await?;
+
+        Ok(())
+    }
 }
diff --git a/mediarepo-daemon/mediarepo-model/src/file.rs b/mediarepo-daemon/mediarepo-model/src/file.rs
index f357daf..877346b 100644
--- a/mediarepo-daemon/mediarepo-model/src/file.rs
+++ b/mediarepo-daemon/mediarepo-model/src/file.rs
@@ -83,12 +83,9 @@ impl File {
 
     /// Finds the file by hash
     #[tracing::instrument(level = "debug", skip(db))]
-    pub async fn by_cd<S: AsRef<str> + Debug>(
-        db: DatabaseConnection,
-        cid: S,
-    ) -> RepoResult<Option<Self>> {
+    pub async fn by_cd(db: DatabaseConnection, cd: &[u8]) -> RepoResult<Option<Self>> {
         if let Some((hash, Some(model))) = content_descriptor::Entity::find()
-            .filter(content_descriptor::Column::Descriptor.eq(cid.as_ref()))
+            .filter(content_descriptor::Column::Descriptor.eq(cd))
             .find_also_related(file::Entity)
             .one(&db)
             .await?
diff --git a/mediarepo-daemon/mediarepo-model/src/file_metadata.rs b/mediarepo-daemon/mediarepo-model/src/file_metadata.rs
index b99381d..0af2fbb 100644
--- a/mediarepo-daemon/mediarepo-model/src/file_metadata.rs
+++ b/mediarepo-daemon/mediarepo-model/src/file_metadata.rs
@@ -30,6 +30,20 @@ impl FileMetadata {
         Ok(file_metadata)
     }
 
+    /// Fetches metadata for all given file ids
+    #[tracing::instrument(level = "debug", skip(db))]
+    pub async fn all_by_ids(db: DatabaseConnection, ids: Vec<i64>) -> RepoResult<Vec<Self>> {
+        let file_metadata = file_metadata::Entity::find()
+            .filter(file_metadata::Column::FileId.is_in(ids))
+            .all(&db)
+            .await?
+            .into_iter()
+            .map(|m| FileMetadata::new(db.clone(), m))
+            .collect();
+
+        Ok(file_metadata)
+    }
+
     /// Adds a file with its hash to the database
     #[tracing::instrument(level = "debug", skip(db))]
     pub(crate) async fn add(
diff --git a/mediarepo-daemon/mediarepo-model/src/repo.rs b/mediarepo-daemon/mediarepo-model/src/repo.rs
index 2b9af08..2f9c084 100644
--- a/mediarepo-daemon/mediarepo-model/src/repo.rs
+++ b/mediarepo-daemon/mediarepo-model/src/repo.rs
@@ -1,3 +1,4 @@
+use crate::content_descriptor::ContentDescriptor;
 use crate::file::File;
 use crate::file_metadata::FileMetadata;
 use crate::namespace::Namespace;
@@ -5,7 +6,7 @@ use crate::storage::Storage;
 use crate::tag::Tag;
 use crate::thumbnail::Thumbnail;
 use chrono::{Local, NaiveDateTime};
-use mediarepo_core::content_descriptor::encode_content_descriptor;
+use mediarepo_core::content_descriptor::{encode_content_descriptor, is_v1_content_descriptor};
 use mediarepo_core::error::{RepoError, RepoResult};
 use mediarepo_core::fs::thumbnail_store::{Dimensions, ThumbnailStore};
 use mediarepo_core::itertools::Itertools;
@@ -92,8 +93,8 @@ impl Repo {
 
     /// Returns a file by its mapped hash
     #[tracing::instrument(level = "debug", skip(self))]
-    pub async fn file_by_cd<S: AsRef<str> + Debug>(&self, hash: S) -> RepoResult<Option<File>> {
-        File::by_cd(self.db.clone(), hash).await
+    pub async fn file_by_cd(&self, cd: &[u8]) -> RepoResult<Option<File>> {
+        File::by_cd(self.db.clone(), cd).await
     }
 
     /// Returns a file by id
@@ -129,6 +130,12 @@ impl Repo {
         File::find_by_tags(self.db.clone(), tag_ids).await
     }
 
+    /// Returns all file metadata entries for the given file ids
+    #[tracing::instrument(level = "debug", skip(self))]
+    pub async fn get_file_metadata_for_ids(&self, ids: Vec<i64>) -> RepoResult<Vec<FileMetadata>> {
+        FileMetadata::all_by_ids(self.db.clone(), ids).await
+    }
+
     /// Adds a file from bytes to the database
     #[tracing::instrument(level = "debug", skip(self, content))]
     pub async fn add_file(
@@ -283,11 +290,8 @@ impl Repo {
 
     /// Finds all tags that are assigned to the given list of hashes
     #[tracing::instrument(level = "debug", skip_all)]
-    pub async fn find_tags_for_file_identifiers(
-        &self,
-        hashes: Vec<Vec<u8>>,
-    ) -> RepoResult<Vec<Tag>> {
-        Tag::for_hash_list(self.db.clone(), hashes).await
+    pub async fn find_tags_for_file_identifiers(&self, cds: Vec<Vec<u8>>) -> RepoResult<Vec<Tag>> {
+        Tag::for_cd_list(self.db.clone(), cds).await
     }
 
     /// Adds all tags that are not in the database to the database and returns the ones already existing as well
@@ -410,6 +414,34 @@ impl Repo {
         get_all_counts(&self.db).await
     }
 
+    pub async fn migrate(&self) -> RepoResult<()> {
+        let cds = ContentDescriptor::all(self.db.clone()).await?;
+
+        tracing::info!("Converting content descriptors to v2 format...");
+        let mut converted_count = 0;
+        let thumb_store = self.get_thumbnail_storage()?;
+        let file_store = self.get_main_storage()?;
+
+        for mut cd in cds {
+            if is_v1_content_descriptor(cd.descriptor()) {
+                let src_cd = cd.descriptor().to_owned();
+                cd.convert_v1_to_v2().await?;
+                let dst_cd = cd.descriptor().to_owned();
+                file_store.rename_entry(&src_cd, &dst_cd).await?;
+                thumb_store
+                    .rename_parent(
+                        encode_content_descriptor(&src_cd),
+                        encode_content_descriptor(&dst_cd),
+                    )
+                    .await?;
+                converted_count += 1;
+            }
+        }
+        tracing::info!("Converted {} descriptors", converted_count);
+
+        Ok(())
+    }
+
     #[tracing::instrument(level = "trace", skip(self))]
     fn get_main_storage(&self) -> RepoResult<&Storage> {
         if let Some(storage) = &self.main_storage {
diff --git a/mediarepo-daemon/mediarepo-model/src/storage.rs b/mediarepo-daemon/mediarepo-model/src/storage.rs
index c00a481..dad7e43 100644
--- a/mediarepo-daemon/mediarepo-model/src/storage.rs
+++ b/mediarepo-daemon/mediarepo-model/src/storage.rs
@@ -1,4 +1,4 @@
-use crate::content_descriptor::Hash;
+use crate::content_descriptor::ContentDescriptor;
 use mediarepo_core::error::RepoResult;
 use mediarepo_core::fs::file_hash_store::FileHashStore;
 use mediarepo_database::entities::storage;
@@ -161,15 +161,28 @@ impl Storage {
 
     /// Adds a thumbnail
     #[tracing::instrument(level = "debug", skip(self, reader))]
-    pub async fn store_entry<R: AsyncRead + Unpin>(&self, reader: R) -> RepoResult<Hash> {
-        let hash = self.store.add_file(reader, None).await?;
-        if let Some(hash) = Hash::by_value(self.db.clone(), &hash).await? {
+    pub async fn store_entry<R: AsyncRead + Unpin>(
+        &self,
+        reader: R,
+    ) -> RepoResult<ContentDescriptor> {
+        let descriptor = self.store.add_file(reader, None).await?;
+        if let Some(hash) = ContentDescriptor::by_value(self.db.clone(), &descriptor).await? {
             Ok(hash)
         } else {
-            Hash::add(self.db.clone(), hash).await
+            ContentDescriptor::add(self.db.clone(), descriptor).await
         }
     }
 
+    /// Renames an entry
+    #[tracing::instrument(level = "debug", skip(self))]
+    pub async fn rename_entry(
+        &self,
+        src_descriptor: &[u8],
+        dst_descriptor: &[u8],
+    ) -> RepoResult<()> {
+        self.store.rename_file(src_descriptor, dst_descriptor).await
+    }
+
     /// Returns the buf reader to the given hash
     #[tracing::instrument(level = "debug", skip(self))]
     pub async fn get_file_reader(
diff --git a/mediarepo-daemon/mediarepo-model/src/tag.rs b/mediarepo-daemon/mediarepo-model/src/tag.rs
index 38eb544..95b30d5 100644
--- a/mediarepo-daemon/mediarepo-model/src/tag.rs
+++ b/mediarepo-daemon/mediarepo-model/src/tag.rs
@@ -118,10 +118,7 @@ impl Tag {
 
     /// Returns all tags that are assigned to any of the passed hashes
     #[tracing::instrument(level = "debug", skip_all)]
-    pub async fn for_hash_list(
-        db: DatabaseConnection,
-        hashes: Vec<Vec<u8>>,
-    ) -> RepoResult<Vec<Self>> {
+    pub async fn for_cd_list(db: DatabaseConnection, cds: Vec<Vec<u8>>) -> RepoResult<Vec<Self>> {
         let tags: Vec<Self> = tag::Entity::find()
             .find_also_related(namespace::Entity)
             .join(
@@ -132,7 +129,7 @@ impl Tag {
                 JoinType::InnerJoin,
                 content_descriptor_tag::Relation::ContentDescriptorId.def(),
             )
-            .filter(content_descriptor::Column::Descriptor.is_in(hashes))
+            .filter(content_descriptor::Column::Descriptor.is_in(cds))
             .group_by(tag::Column::Id)
             .all(&db)
             .await?
diff --git a/mediarepo-daemon/mediarepo-socket/src/from_model.rs b/mediarepo-daemon/mediarepo-socket/src/from_model.rs
index b4b833b..dc0f59f 100644
--- a/mediarepo-daemon/mediarepo-socket/src/from_model.rs
+++ b/mediarepo-daemon/mediarepo-socket/src/from_model.rs
@@ -18,7 +18,6 @@ impl FromModel<FileMetadata> for FileMetadataResponse {
             file_id: metadata.file_id(),
             name: metadata.name().to_owned(),
             comment: metadata.comment().to_owned(),
-            file_type: 0,
             creation_time: metadata.creation_time().to_owned(),
             change_time: metadata.change_time().to_owned(),
             import_time: metadata.import_time().to_owned(),
@@ -31,7 +30,7 @@ impl FromModel<File> for FileBasicDataResponse {
         FileBasicDataResponse {
             id: file.id(),
             status: FileStatus::from_model(file.status()),
-            cid: file.encoded_cd(),
+            cd: file.encoded_cd(),
             mime_type: file.mime_type().to_owned(),
         }
     }
diff --git a/mediarepo-daemon/mediarepo-socket/src/namespaces/files.rs b/mediarepo-daemon/mediarepo-socket/src/namespaces/files.rs
index 25e05c6..7c7d5e7 100644
--- a/mediarepo-daemon/mediarepo-socket/src/namespaces/files.rs
+++ b/mediarepo-daemon/mediarepo-socket/src/namespaces/files.rs
@@ -16,8 +16,11 @@ use mediarepo_core::utils::parse_namespace_and_tag;
 use mediarepo_database::queries::tags::{
     get_cids_with_namespaced_tags, get_content_descriptors_with_tag_count,
 };
+use mediarepo_model::file_metadata::FileMetadata;
+use rayon::iter::{IntoParallelRefIterator, ParallelIterator};
 use std::cmp::Ordering;
 use std::collections::HashMap;
+use std::iter::FromIterator;
 use tokio::io::AsyncReadExt;
 
 pub struct FilesNamespace;
@@ -139,30 +142,36 @@ impl FilesNamespace {
             .collect();
 
         let mut files = repo.find_files_by_tags(tags).await?;
-        let hash_ids: Vec<i64> = files.iter().map(|f| f.cd_id()).collect();
+        let hash_ids: Vec<i64> = files.par_iter().map(|f| f.cd_id()).collect();
+        let file_ids: Vec<i64> = files.par_iter().map(|f| f.id()).collect();
 
         let mut cid_nsp: HashMap<i64, HashMap<String, Vec<String>>> =
             get_cids_with_namespaced_tags(repo.db(), hash_ids.clone()).await?;
         let mut cid_tag_counts =
             get_content_descriptors_with_tag_count(repo.db(), hash_ids).await?;
 
+        let files_metadata = repo.get_file_metadata_for_ids(file_ids).await?;
+        let mut file_metadata_map: HashMap<i64, FileMetadata> =
+            HashMap::from_iter(files_metadata.into_iter().map(|m| (m.file_id(), m)));
+
         let mut contexts = HashMap::new();
 
         for file in &files {
-            let metadata = file.metadata().await?;
-            let context = FileSortContext {
-                name: metadata.name().to_owned(),
-                size: metadata.size() as u64,
-                mime_type: file.mime_type().to_owned(),
-                namespaces: cid_nsp
-                    .remove(&file.cd_id())
-                    .unwrap_or(HashMap::with_capacity(0)),
-                tag_count: cid_tag_counts.remove(&file.cd_id()).unwrap_or(0),
-                import_time: metadata.import_time().to_owned(),
-                create_time: metadata.import_time().to_owned(),
-                change_time: metadata.change_time().to_owned(),
-            };
-            contexts.insert(file.id(), context);
+            if let Some(metadata) = file_metadata_map.remove(&file.id()) {
+                let context = FileSortContext {
+                    name: metadata.name().to_owned(),
+                    size: metadata.size() as u64,
+                    mime_type: file.mime_type().to_owned(),
+                    namespaces: cid_nsp
+                        .remove(&file.cd_id())
+                        .unwrap_or(HashMap::with_capacity(0)),
+                    tag_count: cid_tag_counts.remove(&file.cd_id()).unwrap_or(0),
+                    import_time: metadata.import_time().to_owned(),
+                    create_time: metadata.import_time().to_owned(),
+                    change_time: metadata.change_time().to_owned(),
+                };
+                contexts.insert(file.id(), context);
+            }
         }
         let sort_expression = req.sort_expression;
         tracing::debug!("sort_expression = {:?}", sort_expression);
diff --git a/mediarepo-daemon/mediarepo-socket/src/utils.rs b/mediarepo-daemon/mediarepo-socket/src/utils.rs
index 8e1e4fe..99019b2 100644
--- a/mediarepo-daemon/mediarepo-socket/src/utils.rs
+++ b/mediarepo-daemon/mediarepo-socket/src/utils.rs
@@ -16,9 +16,9 @@ pub async fn get_repo_from_context(ctx: &Context) -> Arc<Repo> {
 pub async fn file_by_identifier(identifier: FileIdentifier, repo: &Repo) -> RepoResult<File> {
     let file = match identifier {
         FileIdentifier::ID(id) => repo.file_by_id(id).await,
-        FileIdentifier::CD(cd) => repo.file_by_cd(cd).await,
+        FileIdentifier::CD(cd) => repo.file_by_cd(&decode_content_descriptor(cd)?).await,
     }?;
-    file.ok_or_else(|| RepoError::from("Thumbnail not found"))
+    file.ok_or_else(|| RepoError::from("File not found"))
 }
 
 pub async fn cd_by_identifier(identifier: FileIdentifier, repo: &Repo) -> RepoResult<Vec<u8>> {
diff --git a/mediarepo-daemon/src/main.rs b/mediarepo-daemon/src/main.rs
index 7f6a9ca..5fc1989 100644
--- a/mediarepo-daemon/src/main.rs
+++ b/mediarepo-daemon/src/main.rs
@@ -116,6 +116,7 @@ async fn init_repo(opt: &Opt) -> RepoResult<(Settings, Repo)> {
     repo.set_main_storage(&settings.default_file_store).await?;
     repo.set_thumbnail_storage(opt.repo.join(&settings.thumbnail_store))
         .await?;
+    repo.migrate().await?;
     Ok((settings, repo))
 }