Index: src/lsmInt.h
==================================================================
--- src/lsmInt.h
+++ src/lsmInt.h
@@ -729,11 +729,11 @@
 void lsmLogEnd(lsm_db *pDb, int bCommit);
 void lsmLogTell(lsm_db *, LogMark *);
 void lsmLogSeek(lsm_db *, LogMark *);
 
 int lsmLogRecover(lsm_db *);
-int lsmLogStructure(lsm_db *pDb, char **pzVal);
+int lsmInfoLogStructure(lsm_db *pDb, char **pzVal);
 
 
 /**************************************************************************
 ** Functions from file "lsm_shared.c".
 */

Index: src/lsm_log.c
==================================================================
--- src/lsm_log.c
+++ src/lsm_log.c
@@ -742,21 +742,40 @@
   if( pMark->iOff > pLog->iRegion1End ) pLog->iRegion1End = 0;
   if( pMark->iOff > pLog->iRegion2Start ) pLog->iRegion2Start = 0;
 }
 
 /*
-** TODO: Thread safety of this function?
+** This function does the work for an lsm_info(LOG_STRUCTURE) request.
 */
-int lsmLogStructure(lsm_db *pDb, char **pzVal){
-  DbLog *pLog = &pDb->treehdr.log;
-  *pzVal = lsmMallocPrintf(pDb->pEnv, 
-      "%d %d %d %d %d %d", 
-      (int)pLog->aRegion[0].iStart, (int)pLog->aRegion[0].iEnd,
-      (int)pLog->aRegion[1].iStart, (int)pLog->aRegion[1].iEnd,
-      (int)pLog->aRegion[2].iStart, (int)pLog->aRegion[2].iEnd
-  );
-  return (*pzVal ? LSM_OK : LSM_NOMEM_BKPT);
+int lsmInfoLogStructure(lsm_db *pDb, char **pzVal){
+  int rc = LSM_OK;
+  char *zVal = 0;
+
+  /* If there is no read or write transaction open, read the latest 
+  ** tree-header from shared-memory to report on. If necessary, update
+  ** it based on the contents of the database header.  
+  **
+  ** No locks are taken here - these are passive read operations only.
+  */
+  if( pDb->pCsr==0 && pDb->nTransOpen==0 ){
+    rc = lsmTreeLoadHeader(pDb, 0);
+    if( rc==LSM_OK ) rc = logReclaimSpace(pDb);
+  }
+
+  if( rc==LSM_OK ){
+    DbLog *pLog = &pDb->treehdr.log;
+    zVal = lsmMallocPrintf(pDb->pEnv, 
+        "%d %d %d %d %d %d", 
+        (int)pLog->aRegion[0].iStart, (int)pLog->aRegion[0].iEnd,
+        (int)pLog->aRegion[1].iStart, (int)pLog->aRegion[1].iEnd,
+        (int)pLog->aRegion[2].iStart, (int)pLog->aRegion[2].iEnd
+    );
+    if( !zVal ) rc = LSM_NOMEM_BKPT;
+  }
+
+  *pzVal = zVal;
+  return rc;
 }
 
 /*************************************************************************
 ** Begin code for log recovery.
 */

Index: src/lsm_main.c
==================================================================
--- src/lsm_main.c
+++ src/lsm_main.c
@@ -479,11 +479,11 @@
       break;
     }
 
     case LSM_INFO_LOG_STRUCTURE: {
       char **pzVal = va_arg(ap, char **);
-      rc = lsmLogStructure(pDb, pzVal);
+      rc = lsmInfoLogStructure(pDb, pzVal);
       break;
     }
 
     default:
       rc = LSM_MISUSE;

Index: test/log2.test
==================================================================
--- test/log2.test
+++ test/log2.test
@@ -102,11 +102,11 @@
   execsql { INSERT INTO t1 VALUES(randstr(10,10), randstr(100, 100)) }
   execsql COMMIT
 } {}
 do_test         3.11 { 
   sqlite4_lsm_info db main log-structure 
-} {1124 1271 0 1062 1272 1809}
+} {0 0 139 1062 1272 1809}
 do_recover_test 3.12 { SELECT * FROM t1 } [execsql {SELECT * FROM t1}]
 
 #-------------------------------------------------------------------------
 #
 reset_db