ACK but for some English fixes inline
On 05/08/14 11:09, Jan Friesse wrote:
This is needed for qdevice to be able to process messages during
synchronization phase.
Signed-off-by: Jan Friesse <[email protected]>
---
exec/ipc_glue.c | 9 ++++++++-
man/votequorum_overview.8 | 9 +++++++++
2 files changed, 17 insertions(+), 1 deletions(-)
diff --git a/exec/ipc_glue.c b/exec/ipc_glue.c
index 355248a..79ee4df 100644
--- a/exec/ipc_glue.c
+++ b/exec/ipc_glue.c
@@ -702,7 +702,14 @@ static void cs_ipcs_check_for_flow_control(void)
* now check flow control
*/
if (ipc_fc_totem_queue_level != TOTEM_Q_LEVEL_CRITICAL
&&
- ipc_fc_sync_in_process == 0) {
+ ipc_fc_sync_in_process == 0) {
+ fc_enabled = QB_FALSE;
+ } else if (ipc_fc_totem_queue_level != TOTEM_Q_LEVEL_CRITICAL
&&
+ i == VOTEQUORUM_SERVICE) {
+ /*
+ * Allow message processing for votequorum
service even
+ * in sync phase
+ */
fc_enabled = QB_FALSE;
} else {
fc_enabled = QB_IPCS_RATE_OFF_2;
diff --git a/man/votequorum_overview.8 b/man/votequorum_overview.8
index bad4ecb..cd9f766 100644
--- a/man/votequorum_overview.8
+++ b/man/votequorum_overview.8
@@ -56,6 +56,15 @@ The library provides a mechanism to:
.PP
* Connect an additional quorum device to allow small clusters to remain
quorate during node outages.
.PP
+.SH VIRTUAL SYNCHRONY
+Votequorum is only one service where communication with library is allowed
during synchronization
Votequorum is the only service where communication with the library
+phase. This makes possible for quorum device to react to membership change and
decide to vote or
This makes it possible for a quorum device to react to
membership changes and ...
+not without timing hazard, because corosync stands in synchronization phase
until qdevice on all
+nodes vote or timeout expires.
nodes votes
+
+As a side effect, extended virtual synchrony is broken for votequorum service.
This means, that
the
votequorum service
+messages sent during synchronization phase can be delivered sooner then
messages sent right
+before sync phase began. This applies also for local messages.
.SH BUGS
No known bugs at the time of writing. The authors are from outerspace. Deal
with it.
.SH "SEE ALSO"
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