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429377a242
Use a "bitmap" of available IPs for each IP address instead of walking the list of available IP addresses. For ctdb/tests/takeover/lcp2.030.sh, this improves the time taken on my laptop from: real 0m11.997s user 0m11.960s sys 0m0.000s to real 0m8.571s user 0m8.544s sys 0m0.000s So, when assigning all 900 IP addresses the improvement is about 25%. For the no-op case (where all IPs are already assigned to nodes), the extra setup adds a small fraction of a second for 900 IPs. Intermediate cases result in intermediate improvements. Signed-off-by: Martin Schwenke <martin@meltin.net> Reviewed-by: Amitay Isaacs <amitay@gmail.com>
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
/*
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CTDB IP takeover code
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Copyright (C) Ronnie Sahlberg 2007
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Copyright (C) Andrew Tridgell 2007
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Copyright (C) Martin Schwenke 2015
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __CTDB_IPALLOC_H__
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#define __CTDB_IPALLOC_H__
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#include <talloc.h>
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#include "replace.h"
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#include "system/network.h"
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struct public_ip_list {
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struct public_ip_list *next;
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uint32_t pnn;
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ctdb_sock_addr addr;
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bool *available_on;
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};
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#define IP_KEYLEN 4
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uint32_t *ip_key(ctdb_sock_addr *ip);
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/* Flags used in IP allocation algorithms. */
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enum ipalloc_algorithm {
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IPALLOC_DETERMINISTIC,
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IPALLOC_NONDETERMINISTIC,
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IPALLOC_LCP2,
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};
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struct ipalloc_state;
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struct ipalloc_state * ipalloc_state_init(TALLOC_CTX *mem_ctx,
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uint32_t num_nodes,
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enum ipalloc_algorithm algorithm,
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bool no_ip_failback,
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uint32_t *force_rebalance_nodes);
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void ipalloc_set_node_flags(struct ipalloc_state *ipalloc_state,
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struct ctdb_node_map *nodemap,
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uint32_t *tval_noiptakeover,
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uint32_t *tval_noiphostonalldisabled);
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void ipalloc_set_public_ips(struct ipalloc_state *ipalloc_state,
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struct ctdb_public_ip_list *known_ips,
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struct ctdb_public_ip_list *available_ips);
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bool ipalloc_can_host_ips(struct ipalloc_state *ipalloc_state);
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struct public_ip_list *ipalloc(struct ipalloc_state *ipalloc_state);
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#endif /* __CTDB_IPALLOC_H__ */
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