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https://git.proxmox.com/git/mirror_corosync-qdevice
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fbc34f3b05
This patch adds qdevice-net part of keep active partition tie breaker functionality. It's enabled by default. When tie happens prefer partition with members of previously active (quorate) partition. This is hard-coded behavior of LMS algorithm so this setting affects only FFSplit algorithm. By default it is disabled for backwards compatibility. This solves problem with FFSplit when node A (with lowest id) is killed, node B gets vote and then node A starts up and creates single node membership and gets vote. Signed-off-by: Jan Friesse <jfriesse@redhat.com>
79 lines
3.1 KiB
C
79 lines
3.1 KiB
C
/*
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* Copyright (c) 2015-2020 Red Hat, Inc.
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*
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* All rights reserved.
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*
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* Author: Jan Friesse (jfriesse@redhat.com)
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*
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* This software licensed under BSD license, the text of which follows:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the Red Hat, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _QDEVICE_NET_SEND_H_
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#define _QDEVICE_NET_SEND_H_
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#include <sys/types.h>
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#include "qdevice-net-instance.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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extern int qdevice_net_send_echo_request(struct qdevice_net_instance *instance);
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extern int qdevice_net_send_preinit(struct qdevice_net_instance *instance);
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extern int qdevice_net_send_init(struct qdevice_net_instance *instance);
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extern int qdevice_net_send_ask_for_vote(struct qdevice_net_instance *instance);
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extern int qdevice_net_send_config_node_list(struct qdevice_net_instance *instance,
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const struct node_list *nlist, int config_version_set, uint64_t config_version,
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int initial);
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extern int qdevice_net_send_heuristics_change(struct qdevice_net_instance *instance,
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enum tlv_heuristics heuristics);
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extern int qdevice_net_send_membership_node_list(
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struct qdevice_net_instance *instance, const struct tlv_ring_id *ring_id,
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uint32_t node_list_entries, uint32_t node_list[], enum tlv_heuristics heuristics);
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extern int qdevice_net_send_quorum_node_list(
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struct qdevice_net_instance *instance, enum tlv_quorate quorate,
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uint32_t node_list_entries, votequorum_node_t node_list[]);
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extern int qdevice_net_send_set_option(struct qdevice_net_instance *instance,
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int add_heartbeat_interval, uint32_t heartbeat_interval,
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int add_keep_active_partition_tie_breaker,
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enum tlv_keep_active_partition_tie_breaker keep_active_partition_tie_breaker);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _QDEVICE_NET_SEND_H_ */
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