Error al arrancar el servicio cmirror (Red Hat y CentOS)

Cuando instalamos el servicio cmirror, ya sea a través de yum o directamente con rpm aparentemente no tienen ninguna dependencia y se instala correctamente. El problema viene al intentar arrancarlo:

# service cmirror start
Loading clustered mirror log module:                 [FAILED]

Falla al iniciar pero no muestra ningún log, ni en salida estándar ni en los logs. La forma de encontrar el origen del problema es habilitando debug al script de arranque con #!/bin/bash -x y volverlo a ejecutar:

# /etc/init.d/cmirror start
+ . /etc/init.d/functions
++ TEXTDOMAIN=initscripts
++ umask 022
++ PATH=/sbin:/usr/sbin:/bin:/usr/bin
++ export PATH
++ '[' -z '' ']'
++ COLUMNS=80
++ '[' -z '' ']'
+++ /sbin/consoletype
++ CONSOLETYPE=pty
++ '[' -f /etc/sysconfig/i18n -a -z '' ']'
++ . /etc/profile.d/lang.sh
+++ sourced=0
+++ for langfile in /etc/sysconfig/i18n '$HOME/.i18n'
+++ '[' -f /etc/sysconfig/i18n ']'
+++ . /etc/sysconfig/i18n
++++ LANG=en_US.UTF-8
++++ SYSFONT=latarcyrheb-sun16
+++ sourced=1
+++ for langfile in /etc/sysconfig/i18n '$HOME/.i18n'
+++ '[' -f /root/.i18n ']'
+++ '[' -n '' ']'
+++ '[' 1 = 1 ']'
+++ '[' -n en_US.UTF-8 ']'
+++ export LANG
+++ '[' -n '' ']'
+++ unset LC_ADDRESS
+++ '[' -n '' ']'
+++ unset LC_CTYPE
+++ '[' -n '' ']'
+++ unset LC_COLLATE
+++ '[' -n '' ']'
+++ unset LC_IDENTIFICATION
+++ '[' -n '' ']'
+++ unset LC_MEASUREMENT
+++ '[' -n en_US.UTF-8 ']'
+++ export LC_MESSAGES
+++ '[' -n '' ']'
+++ unset LC_MONETARY
+++ '[' -n '' ']'
+++ unset LC_NAME
+++ '[' -n '' ']'
+++ unset LC_NUMERIC
+++ '[' -n '' ']'
+++ unset LC_PAPER
+++ '[' -n '' ']'
+++ unset LC_TELEPHONE
+++ '[' -n '' ']'
+++ unset LC_TIME
+++ '[' -n '' ']'
+++ unset LC_ALL
+++ '[' -n '' ']'
+++ unset LANGUAGE
+++ '[' -n '' ']'
+++ unset LINGUAS
+++ '[' -n '' ']'
+++ unset _XKB_CHARSET
+++ consoletype=pty
+++ '[' -z pty ']'
+++ '[' -n '' ']'
+++ '[' -n '' ']'
+++ '[' -n en_US.UTF-8 ']'
+++ case $LANG in
+++ '[' xterm = linux ']'
+++ unset SYSFONTACM SYSFONT
+++ unset sourced
+++ unset langfile
++ '[' -z '' ']'
++ '[' -f /etc/sysconfig/init ']'
++ . /etc/sysconfig/init
+++ BOOTUP=color
+++ GRAPHICAL=yes
+++ RES_COL=60
+++ MOVE_TO_COL='echo -en \033[60G'
+++ SETCOLOR_SUCCESS='echo -en \033[0;32m'
+++ SETCOLOR_FAILURE='echo -en \033[0;31m'
+++ SETCOLOR_WARNING='echo -en \033[0;33m'
+++ SETCOLOR_NORMAL='echo -en \033[0;39m'
+++ LOGLEVEL=3
+++ PROMPT=yes
+++ AUTOSWAP=no
++ '[' pty = serial ']'
++ '[' color '!=' verbose ']'
++ INITLOG_ARGS=-q
++ __sed_discard_ignored_files='/\(~\|\.bak\|\.orig\|\.rpmnew\|\.rpmorig\|\.rpmsave\)$/d'
+ '[' -f /etc/sysconfig/cluster ']'
+ rtrn=1
+ case "$1" in
+ start
+ echo -n 'Loading clustered mirror log module:'
Loading clustered mirror log module:+ modprobe dm-log-clustered
+ rtrn=1
+ '[' 1 -eq 0 ']'
+ failure startup
+ local rc=1
+ '[' color '!=' verbose -a -z '' ']'
+ echo_failure
+ '[' color = color ']'
+ echo -en '\033[60G'
                                                           + echo -n '['
[+ '[' color = color ']'
+ echo -en '\033[0;31m'
+ echo -n FAILED
FAILED+ '[' color = color ']'
+ echo -en '\033[0;39m'
+ echo -n ']'
]+ echo -ne '\r'
+ return 1
+ '[' -x /usr/bin/rhgb-client ']'
+ /usr/bin/rhgb-client --details=yes
+ return 1
+ echo

+ return 1
+ rtrn=1
+ exit 1

Ahora el error sí que está claro (lo he resaltado en negrita). Al intentar cargar el módulo de Kernel dm-log-clustered falla, y es por no tener instalado kmod-cmirror:

# yum install kmod-cmirror
# service cmirror start