diff --git a/src/agent/src/mount.rs b/src/agent/src/mount.rs
index ca4253aea1..b941fe57be 100644
--- a/src/agent/src/mount.rs
+++ b/src/agent/src/mount.rs
@@ -16,6 +16,7 @@ use std::sync::Arc;
 
 use anyhow::{anyhow, Context, Result};
 use kata_sys_util::mount::get_linux_mount_info;
+use kata_types::mount::{KATA_MOUNT_OPTION_FS_GID, KATA_SHAREDFS_GUEST_PREMOUNT_TAG};
 use nix::mount::MsFlags;
 use nix::unistd::{Gid, Uid};
 use regex::Regex;
@@ -39,10 +40,7 @@ use crate::Sandbox;
 use crate::{ccw, device::get_virtio_blk_ccw_device_name};
 
 pub const TYPE_ROOTFS: &str = "rootfs";
-pub const MOUNT_GUEST_TAG: &str = "kataShared";
 
-// Allocating an FSGroup that owns the pod's volumes
-const FS_GID: &str = "fsgid";
 const FS_GID_EQ: &str = "fsgid=";
 const SYS_FS_HUGEPAGES_PREFIX: &str = "/sys/kernel/mm/hugepages";
 
@@ -233,7 +231,7 @@ async fn ephemeral_storage_handler(
         let opts = parse_options(&storage.options);
 
         // ephemeral_storage didn't support mount options except fsGroup.
-        if let Some(fsgid) = opts.get(FS_GID) {
+        if let Some(fsgid) = opts.get(KATA_MOUNT_OPTION_FS_GID) {
             let gid = fsgid.parse::<u32>()?;
 
             nix::unistd::chown(storage.mount_point.as_str(), None, Some(Gid::from_raw(gid)))?;
@@ -360,7 +358,7 @@ async fn local_storage_handler(
     let opts = parse_options(&storage.options);
 
     let mut need_set_fsgid = false;
-    if let Some(fsgid) = opts.get(FS_GID) {
+    if let Some(fsgid) = opts.get(KATA_MOUNT_OPTION_FS_GID) {
         let gid = fsgid.parse::<u32>()?;
 
         nix::unistd::chown(storage.mount_point.as_str(), None, Some(Gid::from_raw(gid)))?;
@@ -638,10 +636,12 @@ fn mount_storage(logger: &Logger, storage: &Storage) -> Result<()> {
 
     // There's a special mechanism to create mountpoint from a `sharedfs` instance before
     // starting the kata-agent. Check for such cases.
-    if storage.source == MOUNT_GUEST_TAG && is_mounted(&storage.mount_point)? {
+    if storage.source == KATA_SHAREDFS_GUEST_PREMOUNT_TAG && is_mounted(&storage.mount_point)? {
         warn!(
             logger,
-            "{} already mounted on {}, ignoring...", MOUNT_GUEST_TAG, &storage.mount_point
+            "{} already mounted on {}, ignoring...",
+            KATA_SHAREDFS_GUEST_PREMOUNT_TAG,
+            &storage.mount_point
         );
         return Ok(());
     }
diff --git a/src/libs/kata-types/src/mount.rs b/src/libs/kata-types/src/mount.rs
index 1c0e69d3ec..473e7d5c08 100644
--- a/src/libs/kata-types/src/mount.rs
+++ b/src/libs/kata-types/src/mount.rs
@@ -14,6 +14,9 @@ pub const KATA_VOLUME_TYPE_PREFIX: &str = "kata:";
 /// The Mount should be ignored by the host and handled by the guest.
 pub const KATA_GUEST_MOUNT_PREFIX: &str = "kata:guest-mount:";
 
+/// The sharedfs volume is mounted by guest OS before starting the kata-agent.
+pub const KATA_SHAREDFS_GUEST_PREMOUNT_TAG: &str = "kataShared";
+
 /// KATA_EPHEMERAL_DEV_TYPE creates a tmpfs backed volume for sharing files between containers.
 pub const KATA_EPHEMERAL_VOLUME_TYPE: &str = "ephemeral";
 
@@ -23,6 +26,9 @@ pub const KATA_HOST_DIR_VOLUME_TYPE: &str = "kata:hostdir";
 /// KATA_MOUNT_INFO_FILE_NAME is used for the file that holds direct-volume mount info
 pub const KATA_MOUNT_INFO_FILE_NAME: &str = "mountInfo.json";
 
+/// Specify `fsgid` for a volume or mount, `fsgid=1`.
+pub const KATA_MOUNT_OPTION_FS_GID: &str = "fsgid";
+
 /// KATA_DIRECT_VOLUME_ROOT_PATH is the root path used for concatenating with the direct-volume mount info file path
 pub const KATA_DIRECT_VOLUME_ROOT_PATH: &str = "/run/kata-containers/shared/direct-volumes";