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e34d509df7
corosync internal theory of operation is that without a quorum provider the cluster is always quorate. This is fine for membership free clusters but it does pose a problem for applications that need membership and "real" quorum. this change add quorum_type to quorum_initialize call to return QUORUM_FREE or QUORUM_SET. Applications can then make their own decisions to error out or continue operating. The only other way to know if a quorum provider is enabled/configured is to poke at confdb/objdb, but adds an unnecessary burden to applications that really don't need to use an entire library for a boolean value. Reviewed-by: Steven Dake <sdake@redhat.com> Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>
62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
#include <config.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <corosync/corotypes.h>
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#include <corosync/quorum.h>
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static quorum_handle_t g_handle;
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static void quorum_notification_fn(
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quorum_handle_t handle,
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uint32_t quorate,
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uint64_t ring_id,
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uint32_t view_list_entries,
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uint32_t *view_list)
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{
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int i;
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printf("quorum notification called \n");
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printf(" quorate = %lu\n", (long unsigned int) quorate);
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printf(" ring id = %llu\n", (long long unsigned int) ring_id);
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printf(" num nodes = %lu ", (long unsigned int) view_list_entries);
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for (i=0; i<view_list_entries; i++) {
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printf(" %d ", view_list[i]);
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}
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printf("\n");
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}
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int main(int argc, char *argv[])
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{
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int quorate;
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quorum_callbacks_t callbacks;
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uint32_t quorum_type;
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int err;
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callbacks.quorum_notify_fn = quorum_notification_fn;
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if ( (err=quorum_initialize(&g_handle, &callbacks, &quorum_type)) != CS_OK)
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fprintf(stderr, "quorum_initialize FAILED: %d\n", err);
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if ( (err=quorum_trackstart(g_handle, CS_TRACK_CHANGES)) != CS_OK)
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fprintf(stderr, "quorum_trackstart FAILED: %d\n", err);
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if ( (err=quorum_getquorate(g_handle, &quorate)) != CS_OK)
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fprintf(stderr, "quorum_getquorate FAILED: %d\n", err);
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else {
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printf("quorate %d\n", quorate);
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}
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printf("Waiting for quorum events, press ^C to finish\n");
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printf("-------------------\n");
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while (1)
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quorum_dispatch(g_handle, CS_DISPATCH_ALL);
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return 0;
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}
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