diff options
Diffstat (limited to 'extras/ganesha/ocf/ganesha_grace')
| -rw-r--r-- | extras/ganesha/ocf/ganesha_grace | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/extras/ganesha/ocf/ganesha_grace b/extras/ganesha/ocf/ganesha_grace new file mode 100644 index 00000000000..825f7164597 --- /dev/null +++ b/extras/ganesha/ocf/ganesha_grace @@ -0,0 +1,221 @@ +#!/bin/bash +# +# Copyright (c) 2014 Anand Subramanian anands@redhat.com +# Copyright (c) 2015 Red Hat Inc. +# All Rights Reserved. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of version 2 of the GNU General Public License as +# published by the Free Software Foundation. +# +# This program is distributed in the hope that it would be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +# +# Further, this software is distributed without any warranty that it is +# free of the rightful claim of any third person regarding infringement +# or the like. Any license provided herein, whether implied or +# otherwise, applies only to this software file. Patent licenses, if +# any, provided herein do not apply to combinations of this program with +# other software, or any other product whatsoever. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write the Free Software Foundation, +# Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. +# +# + +# Initialization: +: ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} +. ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs + +if [ -n "$OCF_DEBUG_LIBRARY" ]; then + . $OCF_DEBUG_LIBRARY +else + : ${OCF_FUNCTIONS_DIR=${OCF_ROOT}/lib/heartbeat} + . ${OCF_FUNCTIONS_DIR}/ocf-shellfuncs +fi + +OCF_RESKEY_grace_active_default="grace-active" +: ${OCF_RESKEY_grace_active=${OCF_RESKEY_grace_active_default}} + +ganesha_meta_data() { + cat <<END +<?xml version="1.0"?> +<!DOCTYPE resource-agent SYSTEM "ra-api-1.dtd"> +<resource-agent name="ganesha_grace"> +<version>1.0</version> + +<longdesc lang="en"> +This Linux-specific resource agent acts as a dummy +resource agent for nfs-ganesha. +</longdesc> + +<shortdesc lang="en">Manages the user-space nfs-ganesha NFS server</shortdesc> + +<parameters> +<parameter name="grace_active"> +<longdesc lang="en">NFS-Ganesha grace active attribute</longdesc> +<shortdesc lang="en">NFS-Ganesha grace active attribute</shortdesc> +<content type="string" default="grace-active" /> +</parameter> +</parameters> + +<actions> +<action name="start" timeout="40s" /> +<action name="stop" timeout="40s" /> +<action name="status" timeout="20s" interval="60s" /> +<action name="monitor" depth="0" timeout="10s" interval="5s" /> +<action name="notify" timeout="10s" /> +<action name="meta-data" timeout="20s" /> +</actions> +</resource-agent> +END + +return ${OCF_SUCCESS} +} + +ganesha_grace_usage() { + echo "ganesha.nfsd USAGE" +} + +# Make sure meta-data and usage always succeed +case $__OCF_ACTION in + meta-data) ganesha_meta_data + exit ${OCF_SUCCESS} + ;; + usage|help) ganesha_usage + exit ${OCF_SUCCESS} + ;; + *) + ;; +esac + +ganesha_grace_start() +{ + local rc=${OCF_ERR_GENERIC} + local host=$(hostname -s) + + ocf_log debug "ganesha_grace_start()" + # give ganesha_mon RA a chance to set the crm_attr first + # I mislike the sleep, but it's not clear that looping + # with a small sleep is necessarily better + # start has a 40sec timeout, so a 5sec sleep here is okay + sleep 5 + attr=$(crm_attribute --query --node=${host} --name=${OCF_RESKEY_grace_active} 2> /dev/null) + if [ $? -ne 0 ]; then + host=$(hostname) + attr=$(crm_attribute --query --node=${host} --name=${OCF_RESKEY_grace_active} 2> /dev/null ) + if [ $? -ne 0 ]; then + ocf_log info "grace start: crm_attribute --query --node=${host} --name=${OCF_RESKEY_grace_active} failed" + fi + fi + + # Three possibilities: + # 1. There is no attribute at all and attr_updater returns + # a zero length string. This happens when + # ganesha_mon::monitor hasn't run at least once to set + # the attribute. The assumption here is that the system + # is coming up. We pretend, for now, that the node is + # healthy, to allow the system to continue coming up. + # It will cure itself in a few seconds + # 2. There is an attribute, and it has the value "1"; this + # node is healthy. + # 3. There is an attribute, but it has no value or the value + # "0"; this node is not healthy. + + # case 1 + if [[ -z "${attr}" ]]; then + return ${OCF_SUCCESS} + fi + + # case 2 + if [[ "${attr}" = *"value=1" ]]; then + return ${OCF_SUCCESS} + fi + + # case 3 + return ${OCF_NOT_RUNNING} +} + +ganesha_grace_stop() +{ + + ocf_log debug "ganesha_grace_stop()" + return ${OCF_SUCCESS} +} + +ganesha_grace_notify() +{ + # since this is a clone RA we should only ever see pre-start + # or post-stop + mode="${OCF_RESKEY_CRM_meta_notify_type}-${OCF_RESKEY_CRM_meta_notify_operation}" + case "${mode}" in + pre-start | post-stop) + dbus-send --print-reply --system --dest=org.ganesha.nfsd /org/ganesha/nfsd/admin org.ganesha.nfsd.admin.grace string:${OCF_RESKEY_CRM_meta_notify_stop_uname} + if [ $? -ne 0 ]; then + ocf_log info "dbus-send --print-reply --system --dest=org.ganesha.nfsd /org/ganesha/nfsd/admin org.ganesha.nfsd.admin.grace string:${OCF_RESKEY_CRM_meta_notify_stop_uname} failed" + fi + ;; + esac + + return ${OCF_SUCCESS} +} + +ganesha_grace_monitor() +{ + local host=$(hostname -s) + + ocf_log debug "monitor" + + attr=$(crm_attribute --query --node=${host} --name=${OCF_RESKEY_grace_active} 2> /dev/null) + if [ $? -ne 0 ]; then + host=$(hostname) + attr=$(crm_attribute --query --node=${host} --name=${OCF_RESKEY_grace_active} 2> /dev/null) + if [ $? -ne 0 ]; then + ocf_log info "crm_attribute --query --node=${host} --name=${OCF_RESKEY_grace_active} failed" + fi + fi + + # if there is no attribute (yet), maybe it's because + # this RA started before ganesha_mon (nfs-mon) has had + # chance to create it. In which case we'll pretend + # everything is okay this time around + if [[ -z "${attr}" ]]; then + return ${OCF_SUCCESS} + fi + + if [[ "${attr}" = *"value=1" ]]; then + return ${OCF_SUCCESS} + fi + + return ${OCF_NOT_RUNNING} +} + +ganesha_grace_validate() +{ + return ${OCF_SUCCESS} +} + +ganesha_grace_validate + +# Translate each action into the appropriate function call +case $__OCF_ACTION in +start) ganesha_grace_start + ;; +stop) ganesha_grace_stop + ;; +status|monitor) ganesha_grace_monitor + ;; +notify) ganesha_grace_notify + ;; +*) ganesha_grace_usage + exit ${OCF_ERR_UNIMPLEMENTED} + ;; +esac + +rc=$? + +# The resource agent may optionally log a debug message +ocf_log debug "${OCF_RESOURCE_INSTANCE} ${__OCF_ACTION} returned $rc" +exit $rc |