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SUSE:SLE-12-SP1:GA
xen.10697
xend-domain-lock-sfex.patch
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File xend-domain-lock-sfex.patch of Package xen.10697
Index: xen-4.4.0-testing/tools/examples/xend-config.sxp =================================================================== --- xen-4.4.0-testing.orig/tools/examples/xend-config.sxp +++ xen-4.4.0-testing/tools/examples/xend-config.sxp @@ -357,7 +357,7 @@ # path /<xend-domain-lock-path>/<vm-uuid> # Return 0 on success, non-zero on error. # -# lock-util [-s] path" +# lock-util [-s] -i <vm uuid> path" # -s Lock status. If lock is acquired, print any contents # on stdout and return 0. Return non-zero if lock is # available. @@ -383,6 +383,11 @@ # #(xend-domain-lock-utility domain-lock) +# Some locking mechanism provide cluster wide locking service like sfex. +# And that requires a shared locking device. +#(xend-domain-lock-utility domain-lock-sfex) +#(xend-domain-lock-device "/dev/iwmvg/hbdevice") + # If we have a very big scsi device configuration, start of xend is slow, # because xend scans all the device paths to build its internal PSCSI device # list. If we need only a few devices for assigning to a guest, we can reduce Index: xen-4.4.0-testing/tools/hotplug/Linux/Makefile =================================================================== --- xen-4.4.0-testing.orig/tools/hotplug/Linux/Makefile +++ xen-4.4.0-testing/tools/hotplug/Linux/Makefile @@ -24,6 +24,7 @@ XEN_SCRIPTS += external-device-migrate XEN_SCRIPTS += vscsi XEN_SCRIPTS += block-iscsi XEN_SCRIPTS += domain-lock vm-monitor +XEN_SCRIPTS += domain-lock-sfex XEN_SCRIPTS += $(XEN_SCRIPTS-y) XEN_SCRIPT_DATA = xen-script-common.sh locking.sh logging.sh Index: xen-4.4.0-testing/tools/hotplug/Linux/domain-lock =================================================================== --- xen-4.4.0-testing.orig/tools/hotplug/Linux/domain-lock +++ xen-4.4.0-testing/tools/hotplug/Linux/domain-lock @@ -4,7 +4,7 @@ basedir=$(dirname "$0") usage() { echo "usage: domain-lock [-l|-u] -n <vm name> -i <vm uuid> -p <physical host> path" - echo "usage: domain-lock [-s] path" + echo "usage: domain-lock [-s] -i <vm uuid> path" echo "" echo "-l lock" echo "-u unlock" Index: xen-4.4.0-testing/tools/hotplug/Linux/domain-lock-sfex =================================================================== --- /dev/null +++ xen-4.4.0-testing/tools/hotplug/Linux/domain-lock-sfex @@ -0,0 +1,166 @@ +#!/bin/bash + +# pre-condition +# 1. device is ready: logical volume activated if used +# 2. device already initialized +# 3. index is assigned correctly + +#error code: +# 0: success +# 1: error + +if [ `uname -m` = "x86_64" ]; then + SFEX_DAEMON=/usr/lib64/heartbeat/sfex_daemon +else + SFEX_DAEMON=/usr/lib/heartbeat/sfex_daemon +fi +SFEX_INIT=/usr/sbin/sfex_init +COLLISION_TIMEOUT=1 +LOCK_TIMEOUT=3 +MONITOR_INTERVAL=2 +LOCAL_LOCK_FILE=/var/lock/sfex + +usage() { + echo "usage: domain-lock-sfex [-l|-u|-s] -i <vm uuid> -x <sfex device>" + echo "" + echo "-l lock" + echo "-u unlock" + echo "-s status (default)" + echo "-i Virtual Machine Id or UUID" + echo "-x SFEX device which used for sfex lock" + exit 1 +} + +get_lock_host() { + local rscname=$1 + local device=$2 + r=`$SFEX_DAEMON -s -u $rscname $device` + echo $r +} + +get_status() { + local rscname=$1 + if /usr/bin/pgrep -f "$SFEX_DAEMON .* ${rscname} " > /dev/null 2>&1; then + return 0 + else + return 1 + fi +} + +acquire_lock() { + local rscname=$1 + local device=$2 + get_status $rscname + ## We assume xend will take care to avoid starting same VM twice on the same machine. + if [ $? -eq 0 ]; then + return 0 + fi + $SFEX_DAEMON -c $COLLISION_TIMEOUT -t $LOCK_TIMEOUT -m $MONITOR_INTERVAL -u $rscname $device + rc=$? + if [ $rc -ne 0 ]; then + return $rc + fi + sleep 4 + get_status $rscname + if [ $? -eq 0 ]; then + return 0 + fi + return 1 +} + +# release has to success +release_lock(){ + local rscname=$1 + + ## If the lock is already released + get_status $rscname + if [ $? -ne 0 ]; then + return 0 + fi + + pid=`/usr/bin/pgrep -f "$SFEX_DAEMON .* ${rscname} "` + /bin/kill $pid + + count=0 + while [ $count -lt 10 ] + do + get_status $rscname + if [ $? -eq 1 ]; then + return 0 + fi + count=`expr $count + 1` + sleep 1 + done + + /bin/kill -9 $pid + while : + do + get_status $rscname + if [ $? -eq 1 ]; then + break; + fi + sleep 1 + done + + return 0 +} + +mode="status" + +while getopts ":lusn:i:p:x:" opt; do +case $opt in +l ) +mode="lock" +;; +u ) +mode="unlock" +;; +s ) +mode="status" +;; +n ) +vm_name=$OPTARG +;; +i ) +vm_uuid=$OPTARG +;; +p ) +vm_host=$OPTARG +;; +x ) +vm_sfex_device=$OPTARG +;; +\? ) +usage +;; +esac +done + +shift $(($OPTIND - 1)) +[ -z $vm_uuid ] && usage +[ -z $vm_sfex_device ] && usage + +case $mode in +lock ) + ( + flock -x 200 + acquire_lock $vm_uuid $vm_sfex_device + rc=$? + flock -u 200 + exit $rc + ) 200>$LOCAL_LOCK_FILE-$vm_uuid +;; +unlock ) + ( + flock -x 200 + release_lock $vm_uuid + rc=$? + flock -u 200 + exit $rc + ) 200>$LOCAL_LOCK_FILE-$vm_uuid +;; +status ) + get_lock_host $vm_uuid $vm_sfex_device +;; +esac + Index: xen-4.4.0-testing/tools/python/xen/xend/XendDomainInfo.py =================================================================== --- xen-4.4.0-testing.orig/tools/python/xen/xend/XendDomainInfo.py +++ xen-4.4.0-testing/tools/python/xen/xend/XendDomainInfo.py @@ -4559,8 +4559,14 @@ class XendDomainInfo: # Return name of host contained in lock file. def get_lock_host(self, path): - fin = os.popen(xoptions.get_xend_domain_lock_utility() + \ - ' -s ' + path, 'r') + lock_cmd = '%s -s -i %s ' % \ + (xoptions.get_xend_domain_lock_utility(), \ + self.info['uuid']) + lock_dev = xoptions.get_xend_domain_lock_device() + if lock_dev: + lock_cmd += '-x %d ' % lock_dev + lock_cmd += path + fin = os.popen(lock_cmd, 'r') hostname = "unknown" try: @@ -4582,6 +4588,16 @@ class XendDomainInfo: path = xoptions.get_xend_domain_lock_path() path = os.path.join(path, self.get_uuid()) + lock_cmd = '%s -l -p %s -n %s -i %s ' % \ + (xoptions.get_xend_domain_lock_utility(), \ + XendNode.instance().get_name(), \ + self.info['name_label'], \ + self.info['uuid']) + lock_dev = xoptions.get_xend_domain_lock_device() + if lock_dev: + lock_cmd += '-x %d ' % lock_dev + lock_cmd += path + try: if not os.path.exists(path): mkdir.parents(path, stat.S_IRWXU) @@ -4589,12 +4605,7 @@ class XendDomainInfo: log.exception("%s could not be created." % path) raise XendError("%s could not be created." % path) - status = os.system('%s -l -p %s -n %s -i %s %s' % \ - (xoptions.get_xend_domain_lock_utility(), \ - XendNode.instance().get_name(), \ - self.info['name_label'], \ - self.info['uuid'], \ - path)) + status = os.system(lock_cmd) >> 8 if status != 0: log.debug("Failed to aqcuire lock: status = %d" % status) raise XendError("The VM is locked and appears to be running on host %s." % self.get_lock_host(path)) @@ -4611,12 +4622,18 @@ class XendDomainInfo: path = xoptions.get_xend_domain_lock_path() path = os.path.join(path, self.get_uuid()) - status = os.system('%s -u -p %s -n %s -i %s %s' % \ - (xoptions.get_xend_domain_lock_utility(), \ - XendNode.instance().get_name(), \ - dom_name, \ - self.info['uuid'], \ - path)) + + lock_cmd = '%s -u -p %s -n %s -i %s ' % \ + (xoptions.get_xend_domain_lock_utility(), \ + XendNode.instance().get_name(), \ + dom_name, \ + self.info['uuid']) + lock_dev = xoptions.get_xend_domain_lock_device() + if lock_dev: + lock_cmd += '-x %d ' % lock_dev + lock_cmd += path + + status = os.system(lock_cmd) >> 8 if status != 0: log.exception("Failed to release lock: status = %s" % status) try: Index: xen-4.4.0-testing/tools/python/xen/xend/XendNode.py =================================================================== --- xen-4.4.0-testing.orig/tools/python/xen/xend/XendNode.py +++ xen-4.4.0-testing/tools/python/xen/xend/XendNode.py @@ -162,6 +162,7 @@ class XendNode: self._init_cpu_pools() + self._init_lock_devices() def _init_networks(self): # Initialise networks @@ -382,6 +383,17 @@ class XendNode: XendCPUPool.recreate_active_pools() + def _init_lock_devices(self): + if xendoptions().get_xend_domain_lock(): + if xendoptions().get_xend_domain_lock_utility().endswith("domain-lock-sfex"): + lock_device = xendoptions().get_xend_domain_lock_device() + if not lock_device: + raise XendError("The block device for sfex is not properly configured") + status = os.system("lvchange -ay %s" % lock_device) >> 8 + if status != 0: + raise XendError("The block device for sfex could not be initialized") + + def add_network(self, interface): # TODO log.debug("add_network(): Not implemented.") Index: xen-4.4.0-testing/tools/python/xen/xend/XendOptions.py =================================================================== --- xen-4.4.0-testing.orig/tools/python/xen/xend/XendOptions.py +++ xen-4.4.0-testing/tools/python/xen/xend/XendOptions.py @@ -164,6 +164,9 @@ class XendOptions: """Default script to acquire/release domain lock""" xend_domain_lock_utility = auxbin.scripts_dir() + "/domain-lock" + """Default block device for lock service""" + xend_domain_lock_device = "" + def __init__(self): self.configure() @@ -430,6 +433,8 @@ class XendOptions: else: return self.xend_domain_lock_utility + def get_xend_domain_lock_device(self): + return self.get_config_string('xend-domain-lock-device', self.xend_domain_lock_device) def get_vnc_tls(self): return self.get_config_string('vnc-tls', self.xend_vnc_tls)
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