Created attachment 1175737 [details]
corosync strace

Description of problem:

After installing package update corosync-2.3.4-7.el7_2.3.x86_64 and corosynclib-2.3.4-7.el7_2.3.x86_64 Corosync now crashes on startup preventing clustering from working.

Ironically this package update was to stop corosync from crashing on startup, see bug 1333397

Version-Release number of selected component (if applicable):

2.3.4-7.el7_2.3

How reproducible:

Every time

Steps to Reproduce:
1. Upgrade Corosync package 2.3.4-7.el7_2.3 as per bug #1333397
2. Start corosync
3. Corosync fails to start

Actual results:

The error logged is:

Jul 04 11:09:49 s1-san8 corosync[15865]:   [MAIN  ] Corosync Cluster Engine exiting with status 8 at main.c:1250.
Jul 04 11:09:49 s1-san8 corosync[15865]:   [MAIN  ] Can't autogenerate multicast address
Jul 04 11:09:49 s1-san8 corosync[15865]:   [MAIN  ] Corosync built-in features: dbus systemd xmlconf snmp pie relro bindnow
Jul 04 11:09:49 s1-san8 corosync[15865]:   [MAIN  ] Corosync Cluster Engine ('2.3.4'): started and ready to provide service.

Expected results:

Corosync started normally before the update.

Additional info:

- Strace of service failing to start attached.

Corosync.conf:

# cat /etc/corosync/corosync.conf
#compatibility: whitetank

totem {
  version:                             2
  token:                               5000
  token_retransmits_before_loss_const: 20
  join:                                1000
  consensus:                           3600
  vsftype:                             none
  max_messages:                        20
  clear_node_high_bit:                 yes
  rrp_mode:                            none
  secauth:                             off
  threads:                             12
  transport:                           udpu
  net_mtu:                             8982
  interface {
    member {
      memberaddr: 172.30.1.7
    }
    member {
      memberaddr: 172.30.1.8
    }
    ringnumber:  0
    bindnetaddr: 172.30.1.0
    mcastport:   5405
  }
}

logging {
  fileline:        off
  to_stderr:       yes
  to_logfile:      no
  to_syslog:       yes
  syslog_facility: daemon
  debug:           off
  timestamp:       on
  logger_subsys {
    subsys: AMF
    debug:  off
    tags:   enter|leave|trace1|trace2|trace3|trace4|trace6
  }
}

amf {
  mode: disabled
}

aisexec {
  user:  root
  group: root
}

quorum {
  provider: corosync_votequorum
}

  two_node: 1

nodelist {
  node {
    ring0_addr: 172.30.1.7
    nodeid: 1
  }
  node {
    ring0_addr: 172.30.1.8
    nodeid: 2
  }
}