diff --git a/pbs-api-types/Cargo.toml b/pbs-api-types/Cargo.toml
index e89c217b..485aee8b 100644
--- a/pbs-api-types/Cargo.toml
+++ b/pbs-api-types/Cargo.toml
@@ -14,7 +14,7 @@ regex = "1.5.5"
 serde = { version = "1.0", features = ["derive"] }
 
 proxmox-lang = "1.0.0"
-proxmox-schema = { version = "1.1", features = [ "api-macro" ] }
+proxmox-schema = { version = "1.2.1", features = [ "api-macro" ] }
 proxmox-serde = "0.1"
 proxmox-time = "1.1.1"
 proxmox-uuid = { version = "1.0.0", features = [ "serde" ] }
diff --git a/pbs-api-types/src/datastore.rs b/pbs-api-types/src/datastore.rs
index ea60e023..01e2319a 100644
--- a/pbs-api-types/src/datastore.rs
+++ b/pbs-api-types/src/datastore.rs
@@ -6,9 +6,9 @@ use proxmox_schema::{
 };
 
 use crate::{
-    Authid, CryptMode, Fingerprint, Userid, DATASTORE_NOTIFY_STRING_SCHEMA, GC_SCHEDULE_SCHEMA,
-    PROXMOX_SAFE_ID_FORMAT, PRUNE_SCHEDULE_SCHEMA, SHA256_HEX_REGEX, SINGLE_LINE_COMMENT_SCHEMA,
-    UPID,
+    Authid, CryptMode, Fingerprint, MaintenanceMode, Userid, DATASTORE_NOTIFY_STRING_SCHEMA,
+    GC_SCHEDULE_SCHEMA, PROXMOX_SAFE_ID_FORMAT, PRUNE_SCHEDULE_SCHEMA, SHA256_HEX_REGEX,
+    SINGLE_LINE_COMMENT_SCHEMA, UPID,
 };
 
 const_regex! {
@@ -262,6 +262,11 @@ pub const DATASTORE_TUNING_STRING_SCHEMA: Schema = StringSchema::new("Datastore
             optional: true,
             schema: DATASTORE_TUNING_STRING_SCHEMA,
         },
+        "maintenance-mode": {
+            optional: true,
+            format: &ApiStringFormat::PropertyString(&MaintenanceMode::API_SCHEMA),
+            type: String,
+        },
     }
 )]
 #[derive(Serialize, Deserialize, Updater)]
@@ -302,6 +307,18 @@ pub struct DataStoreConfig {
     /// Datastore tuning options
     #[serde(skip_serializing_if = "Option::is_none")]
     pub tuning: Option<String>,
+    /// Maintenance mode, type is either 'offline' or 'read-only', message should be enclosed in "
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub maintenance_mode: Option<String>,
+}
+
+impl DataStoreConfig {
+    pub fn get_maintenance_mode(&self) -> Option<MaintenanceMode> {
+        self.maintenance_mode
+            .as_ref()
+            .and_then(|str| MaintenanceMode::API_SCHEMA.parse_property_string(str).ok())
+            .and_then(|value| MaintenanceMode::deserialize(value).ok())
+    }
 }
 
 #[api(
diff --git a/pbs-api-types/src/lib.rs b/pbs-api-types/src/lib.rs
index 03119f4a..d121d26e 100644
--- a/pbs-api-types/src/lib.rs
+++ b/pbs-api-types/src/lib.rs
@@ -49,6 +49,9 @@ pub use jobs::*;
 mod key_derivation;
 pub use key_derivation::{Kdf, KeyInfo};
 
+mod maintenance;
+pub use maintenance::*;
+
 mod network;
 pub use network::*;
 
diff --git a/pbs-api-types/src/maintenance.rs b/pbs-api-types/src/maintenance.rs
new file mode 100644
index 00000000..9b74e9b9
--- /dev/null
+++ b/pbs-api-types/src/maintenance.rs
@@ -0,0 +1,59 @@
+use serde::{Deserialize, Serialize};
+
+use proxmox_schema::{api, ApiStringFormat, const_regex, Schema, StringSchema};
+
+const_regex!{
+    pub MAINTENANCE_MESSAGE_REGEX = r"^[[:^cntrl:]]*$";
+}
+
+pub const MAINTENANCE_MESSAGE_FORMAT: ApiStringFormat =
+    ApiStringFormat::Pattern(&MAINTENANCE_MESSAGE_REGEX);
+
+
+pub const MAINTENANCE_MESSAGE_SCHEMA: Schema =
+    StringSchema::new("Message describing the reason for the maintenance.")
+        .format(&MAINTENANCE_MESSAGE_FORMAT)
+        .max_length(64)
+        .schema();
+
+#[derive(Clone, Copy, Debug)]
+/// Operation requirements, used when checking for maintenance mode.
+pub enum Operation {
+    Read,
+    Write,
+}
+
+#[api]
+#[derive(Deserialize, Serialize)]
+#[serde(rename_all="kebab-case")]
+/// Maintenance type.
+pub enum MaintenanceType {
+    /// Only read operations are allowed on the datastore.
+    ReadOnly,
+    /// Neither read nor write operations are allowed on the datastore.
+    Offline,
+}
+
+#[api(
+    properties: {
+        type: {
+            type: MaintenanceType,
+        },
+        message: {
+            optional: true,
+            schema: MAINTENANCE_MESSAGE_SCHEMA,
+        }
+    },
+    default_key: "type",
+)]
+#[derive(Deserialize, Serialize)]
+/// Maintenance mode
+pub struct MaintenanceMode {
+    /// Type of maintenance ("read-only" or "offline").
+    #[serde(rename = "type")]
+    ty: MaintenanceType,
+
+    /// Reason for maintenance.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    message: Option<String>,
+}