> Corosync parser only allows a limited subset of characters to be used as option keys  in corosync.conf. In situations where the key is generated from user-specified input such values are never parsed into CMAP:

[root@virt-144 ~]# pcs quorum device add model net host="virt-139.cluster-qe.lab.eng.brq.redhat.com" algorithm="lms" heuristics mode="on" exec_čivava="/usr/bin/ping -c 1 127.0.0.1"
Setting up qdevice certificates on nodes...
virt-143: Succeeded
virt-144: Succeeded
virt-145: Succeeded
virt-146: Succeeded
Enabling corosync-qdevice...
virt-143: not enabling corosync-qdevice: corosync is not enabled
virt-145: not enabling corosync-qdevice: corosync is not enabled
virt-146: not enabling corosync-qdevice: corosync is not enabled
virt-144: not enabling corosync-qdevice: corosync is not enabled
Sending updated corosync.conf to nodes...
virt-143: Succeeded
virt-144: Succeeded
virt-146: Succeeded
virt-145: Succeeded
Corosync configuration reloaded
Starting corosync-qdevice...
virt-143: corosync-qdevice started
virt-145: corosync-qdevice started
virt-146: corosync-qdevice started
virt-144: corosync-qdevice started
[root@virt-144 ~]# echo $?
0

[root@virt-144 ~]# grep čivava /etc/corosync/corosync.conf
            exec_čivava: /usr/bin/ping -c 1 127.0.0.1

[root@virt-144 ~]# corosync-cmapctl |grep exec
[root@virt-144 ~]#



> Pcs should be able to validate the input in such cases. The valid characters are specified in icmap.c as (where ':' and '.' are reserved):

static int icmap_is_valid_name_char(char c)
{
  return ((c >= 'a' && c <= 'z') ||
    (c >= 'A' && c <= 'Z') ||
    (c >= '0' && c <= '9') ||
    c == '.' || c == '_' || c == '-' || c == '/' || c == ':');
}