ITS#5337 fix maxcsn search at startup

diff --git a/servers/slapd/overlays/syncprov.c b/servers/slapd/overlays/syncprov.c
index d480958ac78eea7c54ab2023df6696a0d88b0bcf..d525cb6c46a5154401e6d32920ba32d9c63b3643 100644 (file)
--- a/servers/slapd/overlays/syncprov.c
+++ b/servers/slapd/overlays/syncprov.c
@@ -497,7 +497,8 @@ findmax_cb( Operation *op, SlapReply *rs )
                Attribute *a = attr_find( rs->sr_entry->e_attrs,
                        slap_schema.si_ad_entryCSN );
 
-               if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 ) {
+               if ( a && ber_bvcmp( &a->a_vals[0], maxcsn ) > 0 &&
+                       slap_parse_csn_sid( &a->a_vals[0] ) == slap_serverID ) {
                        maxcsn->bv_len = a->a_vals[0].bv_len;
                        strcpy( maxcsn->bv_val, a->a_vals[0].bv_val );
                }
@@ -587,7 +588,7 @@ syncprov_findcsn( Operation *op, find_csn_t mode )
        sync_control *srs = NULL;
        struct slap_limits_set fc_limits;
        int i, rc = LDAP_SUCCESS, findcsn_retry = 1;
-       int maxid = 0;
+       int maxid;
 
        if ( mode != FIND_MAXCSN ) {
                srs = op->o_controls[slap_cids.sc_LDAPsync];
@@ -613,14 +614,20 @@ again:
        switch( mode ) {
        case FIND_MAXCSN:
                cf.f_choice = LDAP_FILTER_GE;
-               cf.f_av_value = si->si_ctxcsn[0];
-               /* If there are multiple CSNs, use the largest */
-               for ( i=1; i<si->si_numcsns; i++) {
-                       if ( ber_bvcmp( &cf.f_av_value, &si->si_ctxcsn[i] ) < 0 ) {
-                               cf.f_av_value = si->si_ctxcsn[i];
+               /* If there are multiple CSNs, use the one with our serverID */
+               for ( i=0; i<si->si_numcsns; i++) {
+                       if ( slap_serverID == si->si_sids[i] ) {
                                maxid = i;
+                               break;
                        }
                }
+               if ( i == si->si_numcsns ) {
+                       /* No match: this is multimaster, and none of the content in the DB
+                        * originated locally. Treat like no CSN.
+                        */
+                       return LDAP_NO_SUCH_OBJECT;
+               }
+               cf.f_av_value = si->si_ctxcsn[maxid];
                fop.ors_filterstr.bv_len = snprintf( buf, sizeof( buf ),
                        "(entryCSN>=%s)", cf.f_av_value.bv_val );
                if ( fop.ors_filterstr.bv_len < 0 || fop.ors_filterstr.bv_len >= sizeof( buf ) ) {