LU-5218 llog: keep llog ctxt indices constant

[fs/lustre-release.git] / lustre / include / lustre / lustre_idl.h

diff --git a/lustre/include/lustre/lustre_idl.h b/lustre/include/lustre/lustre_idl.h
index bd9aa6c..6f21697 100644 (file)
--- a/lustre/include/lustre/lustre_idl.h
+++ b/lustre/include/lustre/lustre_idl.h
@@ -3180,7 +3180,29 @@ typedef enum {
 } obd_cmd_t;
 #define OBD_FIRST_OPC OBD_PING
 
-/* catalog of log objects */
+/**
+ * llog contexts indices.
+ *
+ * There is compatibility problem with indexes below, they are not
+ * continuous and must keep their numbers for compatibility needs.
+ * See LU-5218 for details.
+ */
+enum llog_ctxt_id {
+       LLOG_CONFIG_ORIG_CTXT  =  0,
+       LLOG_CONFIG_REPL_CTXT = 1,
+       LLOG_MDS_OST_ORIG_CTXT = 2,
+       LLOG_MDS_OST_REPL_CTXT = 3, /* kept just to avoid re-assignment */
+       LLOG_SIZE_ORIG_CTXT = 4,
+       LLOG_SIZE_REPL_CTXT = 5,
+       LLOG_TEST_ORIG_CTXT = 8,
+       LLOG_TEST_REPL_CTXT = 9, /* kept just to avoid re-assignment */
+       LLOG_CHANGELOG_ORIG_CTXT = 12, /**< changelog generation on mdd */
+       LLOG_CHANGELOG_REPL_CTXT = 13, /**< changelog access on clients */
+       /* for multiple changelog consumers */
+       LLOG_CHANGELOG_USER_ORIG_CTXT = 14,
+       LLOG_AGENT_ORIG_CTXT = 15, /**< agent requests generation on cdt */
+       LLOG_MAX_CTXTS
+};
 
 /** Identifier for a single log object */
 struct llog_logid {