[t:2892] Improve upgrade footprint/status.

git-svn-id: file:///svn/toku/tokudb@25770 c7de825b-a66e-492c-adef-691d508d4ae1

newbrt/log_upgrade.c

@@ -174,6 +174,7 @@ toku_maybe_upgrade_log(const char *env_dir, const char *log_dir, LSN * lsn_of_cl
     int lockfd = -1;
     FOOTPRINTSETUP(100000);
 
+    footprint = 0;
     *upgrade_in_progress = FALSE;  // set TRUE only if all criteria are met and we're actually doing an upgrade
 
     FOOTPRINT(1);

src/ydb.c

@@ -462,10 +462,11 @@ db_use_builtin_key_cmp(DB *db) {
 // Following keys added in version 12
 static const char * orig_env_ver_key = "original_version";
 static const char * curr_env_ver_key = "current_version";  
-// Following keys added in version 13
+// Following keys added in version 13, add more keys for future versions
 static const char * creation_time_key         = "creation_time";
 static const char * last_lsn_of_v12_key       = "last_lsn_of_v12";
-static const char * upgrade_v13_time_key = "upgrade_v13_time";  // Add more keys for future upgrades
+static const char * upgrade_v13_time_key      = "upgrade_v13_time";      
+static const char * upgrade_v13_footprint_key = "upgrade_v13_footprint";
 
 // Values read from (or written into) persistent environment,
 // kept here for read-only access from engine status.
@@ -474,6 +475,7 @@ static uint32_t persistent_stored_env_version_at_startup;    // read from curr_e
 static time_t   persistent_creation_time;
 static uint64_t persistent_last_lsn_of_v12;
 static time_t   persistent_upgrade_v13_time;
+static uint64_t persistent_upgrade_v13_footprint;
 
 // Requires: persistent environment dictionary is already open.
 // Input arg is lsn of clean shutdown of previous version,
@@ -512,6 +514,12 @@ maybe_upgrade_persistent_environment_dictionary(DB_ENV * env, DB_TXN * txn, LSN
 	toku_fill_dbt(&val, &upgrade_v13_time_d, sizeof(upgrade_v13_time_d));
 	r = toku_db_put(persistent_environment, txn, &key, &val, DB_NOOVERWRITE);
         assert(r==0);
+
+	uint64_t upgrade_v13_footprint_d = toku_htod64(toku_log_upgrade_get_footprint());
+	toku_fill_dbt(&key, upgrade_v13_footprint_key, strlen(upgrade_v13_footprint_key));
+	toku_fill_dbt(&val, &upgrade_v13_footprint_d, sizeof(upgrade_v13_footprint_d));
+	r = toku_db_put(persistent_environment, txn, &key, &val, DB_NOOVERWRITE);
+        assert(r==0);
     }
     return r;
 }
@@ -561,6 +569,12 @@ capture_persistent_env_contents (DB_ENV * env, DB_TXN * txn) {
 	r = toku_db_get(persistent_environment, txn, &key, &val, 0);
 	assert(r == 0);
 	persistent_upgrade_v13_time = toku_dtoh64((*(time_t*)val.data));
+
+	toku_fill_dbt(&key, upgrade_v13_footprint_key, strlen(upgrade_v13_footprint_key));
+	toku_init_dbt(&val);
+	r = toku_db_get(persistent_environment, txn, &key, &val, 0);
+	assert(r == 0);
+	persistent_upgrade_v13_footprint = toku_dtoh64((*(uint64_t*)val.data));
     }
 
 }
@@ -1871,8 +1885,14 @@ env_get_engine_status(DB_ENV * env, ENGINE_STATUS * engstat, char * env_panic_st
 	{
 	    BRT_UPGRADE_STATUS_S brt_upgrade_stat;
 	    toku_brt_get_upgrade_status(&brt_upgrade_stat);
-
-	    engstat->upgrade_env_status = toku_log_upgrade_get_footprint();
+	    uint64_t upgrade_footprint  = toku_log_upgrade_get_footprint();
+	    // Footprint of upgrade maybe performed for this time environment is opened
+	    // is provided in six least significant decimal digits, footprint of 
+	    // upgrade performed when environment was actually upgraded is provided
+	    // in most significant decimal digits.
+	    // If ver_at_startup == 12, then the footprint will have the same value in 
+	    // upper and lower digits.
+	    engstat->upgrade_env_status = (persistent_upgrade_v13_footprint * 1000000) + upgrade_footprint;
 	    engstat->upgrade_header     = brt_upgrade_stat.header_12;
 	    engstat->upgrade_nonleaf    = brt_upgrade_stat.nonleaf_12;
 	    engstat->upgrade_leaf       = brt_upgrade_stat.leaf_12;