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64361d9778
No need to expose tunable values that far down. Signed-off-by: Martin Schwenke <martin@meltin.net> Reviewed-by: Amitay Isaacs <amitay@gmail.com>
63 lines
1.8 KiB
C
63 lines
1.8 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 2011
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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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#include "replace.h"
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#include "system/network.h"
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#include "lib/util/debug.h"
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#include "common/logging.h"
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#include "server/ipalloc_private.h"
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bool ipalloc_deterministic(struct ipalloc_state *ipalloc_state)
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{
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struct public_ip_list *t;
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int i, numnodes;
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numnodes = ipalloc_state->num;
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DEBUG(DEBUG_NOTICE,("Deterministic IPs enabled. Resetting all ip allocations\n"));
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/* Allocate IPs to nodes in a modulo fashion so that IPs will
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* always be allocated the same way for a specific set of
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* available/unavailable nodes.
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*/
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for (i = 0, t = ipalloc_state->all_ips; t!= NULL; t = t->next, i++) {
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t->pnn = i % numnodes;
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}
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/* IP failback doesn't make sense with deterministic
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* IPs, since the modulo step above implicitly fails
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* back IPs to their "home" node.
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*/
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if (ipalloc_state->no_ip_failback) {
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DEBUG(DEBUG_WARNING, ("WARNING: 'NoIPFailback' set but ignored - incompatible with 'DeterministicIPs\n"));
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}
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unassign_unsuitable_ips(ipalloc_state);
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basic_allocate_unassigned(ipalloc_state);
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/* No failback here! */
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return true;
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}
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