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@mikehardy
Created September 4, 2018 12:42
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A script to manage suspend/resume/stop for all libvirt guests
#!/bin/sh
#
# Inspired by https://github.com/kumina/shutdown-kvm-guests/blob/master/shutdown-kvm-guests.sh
#
# Configure timeout (in seconds).
TIMEOUT=300
VIRSH=/usr/bin/virsh
# List running domains.
list_domains_by_state() {
$VIRSH list | grep $1 | awk '{ print $2}'
}
case "$1" in
start,reload,restart,force-reload)
;;
suspend)
echo "Trying to suspend all running KVM domains..."
list_domains_by_state running | while read DOMAIN; do
$VIRSH suspend $DOMAIN
done
echo "...done suspending KVM domains."
;;
resume)
echo "Trying to resume all suspended KVM domains..."
list_domains_by_state paused | while read DOMAIN; do
$VIRSH resume $DOMAIN
done
echo "...done resuming KVM domains."
;;
stop)
echo "Try to cleanly shut down all running KVM domains..."
# Create some sort of semaphore.
touch /tmp/shutdown-kvm-guests
# Try to shutdown each domain, one by one.
list_domains_by_state running | while read DOMAIN; do
# Try to shutdown given domain.
$VIRSH shutdown $DOMAIN
done
# Wait until all domains are shut down or timeout has reached.
END_TIME=$(date -d "$TIMEOUT seconds" +%s)
while [ $(date +%s) -lt $END_TIME ]; do
# Break while loop when no domains are left.
test -z "$(list_running_domains)" && break
# Wait a litte, we don't want to DoS libvirt.
sleep 1
done
# Clean up left over domains, one by one.
list_domains_by_state running | while read DOMAIN; do
# Try to shutdown given domain.
$VIRSH destroy $DOMAIN
# Give libvirt some time for killing off the domain.
sleep 3
done
;;
esac
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