LU-7577 mdt: root inode checking for migration

[fs/lustre-release.git] / lustre / mdt / mdt_reint.c

diff --git a/lustre/mdt/mdt_reint.c b/lustre/mdt/mdt_reint.c
index 1dbae87..d18019b 100644 (file)
--- a/lustre/mdt/mdt_reint.c
+++ b/lustre/mdt/mdt_reint.c
@@ -1449,6 +1449,9 @@ static int mdt_reint_migrate_internal(struct mdt_thread_info *info,
        if (!fid_is_md_operative(old_fid))
                GOTO(out_unlock_parent, rc = -EPERM);
 
+       if (lu_fid_eq(old_fid, &info->mti_mdt->mdt_md_root_fid))
+               GOTO(out_unlock_parent, rc = -EPERM);
+
        mold = mdt_object_find(info->mti_env, info->mti_mdt, old_fid);
        if (IS_ERR(mold))
                GOTO(out_unlock_parent, rc = PTR_ERR(mold));