Re: [PATCH 11/11] votequorum: rename leave_remove to allow_downscale

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ACK

Reviewed-By: Christine Caulfield <ccaulfie@xxxxxxxxxx>

On 02/03/12 11:02, Fabio M. Di Nitto wrote:
From: "Fabio M. Di Nitto"<fdinitto@xxxxxxxxxx>

pointed out that leave_remove can be easily confused with the old
cman leave_remove behavior. The two are substantially different
and we need to avoid confusion both for users and our support team.

Signed-off-by: Fabio M. Di Nitto<fdinitto@xxxxxxxxxx>
---
  exec/coroparse.c  |    2 +-
  exec/votequorum.c |   24 ++++++++++++------------
  man/votequorum.5  |   10 +++++-----
  3 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/exec/coroparse.c b/exec/coroparse.c
index 1d97323..c69a462 100644
--- a/exec/coroparse.c
+++ b/exec/coroparse.c
@@ -399,7 +399,7 @@ static int main_config_parser_cb(const char *path,
  			}

  			if ((strcmp(path, "quorum.two_node") == 0) ||
-			    (strcmp(path, "quorum.leave_remove") == 0) ||
+			    (strcmp(path, "quorum.allow_downscale") == 0) ||
  			    (strcmp(path, "quorum.wait_for_all") == 0) ||
  			    (strcmp(path, "quorum.auto_tie_breaker") == 0) ||
  			    (strcmp(path, "quorum.last_man_standing") == 0)) {
diff --git a/exec/votequorum.c b/exec/votequorum.c
index 5a9b821..81d92a1 100644
--- a/exec/votequorum.c
+++ b/exec/votequorum.c
@@ -83,7 +83,7 @@ static int lowest_node_id = -1;
  static uint8_t last_man_standing = 0;
  static uint32_t last_man_standing_window = DEFAULT_LMS_WIN;

-static uint8_t leave_remove = 0;
+static uint8_t allow_downscale = 0;
  static uint32_t ev_barrier = 0;

  /*
@@ -574,7 +574,7 @@ static int calculate_quorum(int allow_decrease, unsigned int max_expected, unsig

  	ENTER();

-	if ((leave_remove)&&  (allow_decrease)&&  (max_expected)) {
+	if ((allow_downscale)&&  (allow_decrease)&&  (max_expected)) {
  		max_expected = max(ev_barrier, max_expected);
  	}

@@ -923,7 +923,7 @@ static char *votequorum_readconfig(int runtime)
  			wait_for_all = 1;
  		}

-		icmap_get_uint8("quorum.leave_remove",&leave_remove);
+		icmap_get_uint8("quorum.allow_downscale",&allow_downscale);
  		icmap_get_uint8("quorum.wait_for_all",&wait_for_all);
  		icmap_get_uint8("quorum.auto_tie_breaker",&auto_tie_breaker);
  		icmap_get_uint8("quorum.last_man_standing",&last_man_standing);
@@ -970,12 +970,12 @@ static char *votequorum_readconfig(int runtime)
  		}
  	}

-	if ((have_qdevice)&&  (leave_remove)) {
+	if ((have_qdevice)&&  (allow_downscale)) {
  		if (!runtime) {
-			error = (char *)"configuration error: quorum.device is not compatible with leave_remove";
+			error = (char *)"configuration error: quorum.device is not compatible with allow_downscale";
  			goto out;
  		} else {
-			log_printf(LOGSYS_LEVEL_CRIT, "configuration error: quorum.device is not compatible with leave_remove");
+			log_printf(LOGSYS_LEVEL_CRIT, "configuration error: quorum.device is not compatible with allow_downscale");
  			log_printf(LOGSYS_LEVEL_CRIT, "disabling quorum device operations");
  			update_qdevice_can_operate(0);
  		}
@@ -1663,7 +1663,7 @@ static int votequorum_exec_exit_fn (void)
  	 * tell the other nodes we are leaving
  	 */

-	if (leave_remove) {
+	if (allow_downscale) {
  		us->flags |= NODE_FLAGS_LEAVING;
  		ret = votequorum_exec_send_nodeinfo(us->node_id);
  	}
@@ -1992,7 +1992,7 @@ static void message_handler_req_lib_votequorum_getinfo (void *conn, const void *
  		if (auto_tie_breaker) {
  			res_lib_votequorum_getinfo.flags |= VOTEQUORUM_INFO_AUTO_TIE_BREAKER;
  		}
-		if (leave_remove) {
+		if (allow_downscale) {
  			res_lib_votequorum_getinfo.flags |= VOTEQUORUM_INFO_LEAVE_REMOVE;
  		}
  		if (node->flags&  NODE_FLAGS_QDEVICE) {
@@ -2018,18 +2018,18 @@ static void message_handler_req_lib_votequorum_setexpected (void *conn, const vo
  	cs_error_t error = CS_OK;
  	unsigned int newquorum;
  	unsigned int total_votes;
-	uint8_t leave_remove_status = 0;
+	uint8_t allow_downscale_status = 0;

  	ENTER();

-	leave_remove_status = leave_remove;
-	leave_remove = 0;
+	allow_downscale_status = allow_downscale;
+	allow_downscale = 0;

  	/*
  	 * Validate new expected votes
  	 */
  	newquorum = calculate_quorum(1, req_lib_votequorum_setexpected->expected_votes,&total_votes);
-	leave_remove = leave_remove_status;
+	allow_downscale = allow_downscale_status;
  	if (newquorum<  total_votes / 2 ||
  	    newquorum>  total_votes) {
  		error = CS_ERR_INVALID_PARAM;
diff --git a/man/votequorum.5 b/man/votequorum.5
index ab10662..b93945b 100644
--- a/man/votequorum.5
+++ b/man/votequorum.5
@@ -271,13 +271,13 @@ quorum {

  .fi
  .PP
-.B leave_remove: 1
+.B allow_downscale: 1
  .PP
-Enables leave remove (LR) feature (default: 0).
+Enables allow downscale (AD) feature (default: 0).
  .PP
  The general behaviour of votequorum is to never decrease expected votes or quorum.
  .PP
-When LR is enabled, both expected votes and quorum are recalculated when
+When AD is enabled, both expected votes and quorum are recalculated when
  a node leaves the cluster in a clean state (normal corosync shutdown process) down
  to configured expected_votes.
  .PP
@@ -312,13 +312,13 @@ Example configuration:
  quorum {
      provider: corosync_votequorum
      expected_votes: 3
-    leave_remove: 1
+    allow_downscale: 1
  }
  .fi
  .PP
  .SH VARIOUS NOTES
  .PP
-* WFA / LMS / ATB / LR can be used combined together.
+* WFA / LMS / ATB / AD can be used combined together.
  .PP
  * In order to change the default votes for a node there are two options:
  .nf

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