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60 lines
1.7 KiB
Bash
60 lines
1.7 KiB
Bash
#!/bin/bash
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#Copyright 2012 Citrix Systems, Inc. Licensed under the
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#Apache License, Version 2.0 (the "License"); you may not use this
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#file except in compliance with the License. Citrix Systems, Inc.
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#reserves all rights not expressly granted by the License.
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#You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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#Unless required by applicable law or agreed to in writing, software
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#distributed under the License is distributed on an "AS IS" BASIS,
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#WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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#See the License for the specific language governing permissions and
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#limitations under the License.
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LANG="C"
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export LANG
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usage() {
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echo "$0 [ -p <pidfile> ]" >&2
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exit 1
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}
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# Parse command line opts
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while [ $# -ne 0 ] ; do
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arg="$1"
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shift
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case "$arg" in
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"-p")
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[ $# -eq 0 ] && usage
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pidfile="$1"
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shift
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mkdir -p "$(dirname "$pidfile")"
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echo $$ > "$pidfile"
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;;
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*)
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usage
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;;
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esac
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done
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XE_UPDATE_GUEST_ATTRS=${XE_UPDATE_GUEST_ATTRS:-/usr/sbin/xe-update-guest-attrs}
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XE_DAEMON_RATE=${XE_DAEMON_RATE:-60} # run once a minute by default
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XE_MEMORY_UPDATE_DIVISOR=${XE_MEMORY_UPDATE_DIVISOR:-2} # update mem stats 1/2 as often by dflt
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# Delete xenstore cache following each reboot
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rm -rf /var/cache/xenstore
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MEMORY_UPDATE_COUNTER=0
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while true ; do
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if [ ${MEMORY_UPDATE_COUNTER} -eq 0 ] ; then
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MEMORY=--memory
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MEMORY_UPDATE_COUNTER=${XE_MEMORY_UPDATE_DIVISOR}
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else
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MEMORY=
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fi
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MEMORY_UPDATE_COUNTER=$((${MEMORY_UPDATE_COUNTER} - 1))
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${XE_UPDATE_GUEST_ATTRS} ${MEMORY}
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sleep ${XE_DAEMON_RATE}
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done
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