diff --git a/src/cm_utils/cm_scsi.c b/src/cm_utils/cm_scsi.c
index 38ae8b9b0aba20a6c078fba2368112d802bd090a..f398801b53b6e8d0b5beef1bd0a2ebf06593552e 100644
--- a/src/cm_utils/cm_scsi.c
+++ b/src/cm_utils/cm_scsi.c
@@ -358,7 +358,11 @@ status_t cm_scsi3_reserve(int32 fd, int64 rk)
 {
     uchar cdb[10] = { 0 };
     int32 scope = 0;
-    uint32 type = 0x06;
+#ifdef OPENGAUSS
+    uint32 type = RESERV_TYPE_REGISTER_ACCESS;
+#else
+    uint32 type = RESERV_TYPE_REGISTER_WRITE;
+#endif
     int32 servact = 0x01;
     uint16 param_len = CM_SCSI_XFER_DATA_LEN_24;
     uchar sense_buffer[CM_SCSI_SENSE_LEN] = { 0 };
@@ -415,7 +419,11 @@ status_t cm_scsi3_release(int32 fd, int64 rk)
 {
     uchar cdb[10] = { 0 };
     int32 scope = 0;
-    uint32 type = 0x06;
+#ifdef OPENGAUSS
+    uint32 type = RESERV_TYPE_REGISTER_ACCESS;
+#else
+    uint32 type = RESERV_TYPE_REGISTER_WRITE;
+#endif
     int32 servact = 0x02;
     uint16 param_len = CM_SCSI_XFER_DATA_LEN_24;
     uchar sense_buffer[CM_SCSI_SENSE_LEN] = { 0 };
@@ -519,7 +527,11 @@ status_t cm_scsi3_preempt(int32 fd, int64 rk, int64 sark)
 {
     uchar cdb[10] = {0};
     uint32 scope = 0;
-    uint32 type = 0x06;
+#ifdef OPENGAUSS
+    uint32 type = RESERV_TYPE_REGISTER_ACCESS;
+#else
+    uint32 type = RESERV_TYPE_REGISTER_WRITE;
+#endif
     uint32 servact = 0x04;
     uint16 param_len = CM_SCSI_XFER_DATA_LEN_24;
     uchar sense_buffer[CM_SCSI_SENSE_LEN] = {0};
diff --git a/src/cm_utils/cm_scsi.h b/src/cm_utils/cm_scsi.h
index ec2ad8b2def018a5be6e238b149264b82b4579fa..ad7db5958535514b069e15a0fa95d6f93fd5c34f 100644
--- a/src/cm_utils/cm_scsi.h
+++ b/src/cm_utils/cm_scsi.h
@@ -97,6 +97,13 @@ typedef struct st_scsi_sense_hdr {
     uchar add_length;
 } scsi_sense_hdr_t;
 
+typedef enum en_scsi_reserv_type {
+    RESERV_TYPE_EXC_WRITE = 0x01,        /* readable by all, only reserv owner can write */
+    RESERV_TYPE_EXC_ACCESS = 0x03,       /* only reserv owner can read/write */
+    RESERV_TYPE_REGISTER_WRITE = 0x05,   /* readable by all, only registers can write */
+    RESERV_TYPE_REGISTER_ACCESS = 0x06,  /* only registers can read/write */
+} scsi_reserv_type_e;
+
 #ifdef WIN32
 status_t cm_scsi3_rkeys(int32 fd, int64 *reg_keys, int32 *key_count, uint32 *generation);
 #else