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getncchanges: calculate getnc_state->min_usn calculation based on the uptodateness vector

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This should improve initial replication of a fresh destination dsa with
a zero highwatermark.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=12398

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Stefan Metzmacher 2017-02-07 12:37:16 +01:00 committed by Andrew Bartlett
parent 02f11b925c
commit c61d0c8957
1 changed files with 23 additions and 0 deletions
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23
source4/rpc_server/drsuapi/getncchanges.c
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@ -2063,10 +2063,33 @@ allowed:
if (getnc_state->guids == NULL) {
const char *extra_filter;
struct ldb_result *search_res = NULL;
static const struct drsuapi_DsReplicaCursorCtrEx empty_udv;
const struct drsuapi_DsReplicaCursorCtrEx *udv = NULL;
extra_filter = lpcfg_parm_string(dce_call->conn->dce_ctx->lp_ctx, NULL, "drs", "object filter");
if (req10->uptodateness_vector != NULL) {
udv = req10->uptodateness_vector;
} else {
udv = &empty_udv;
}
getnc_state->min_usn = req10->highwatermark.highest_usn;
for (i = 0; i < udv->count; i++) {
bool match;
const struct drsuapi_DsReplicaCursor *cur =
&udv->cursors[i];
match = GUID_equal(&invocation_id,
&cur->source_dsa_invocation_id);
if (!match) {
continue;
}
if (cur->highest_usn > getnc_state->min_usn) {
getnc_state->min_usn = cur->highest_usn;
}
break;
}
getnc_state->max_usn = getnc_state->min_usn;
getnc_state->final_udv = talloc_zero(getnc_state,