shellfu-bash-saturnin/libexec/saturnin-revert

#!/bin/bash

. <(ffoom init)

ffoo import pretty
ffoo import recon

FFOO_VERBOSE=${FFOO_VERBOSE:-true}

usage() {
    usage_is "[--dry-run] [-c|--connection] domain [snapshot]"
}

DRY_RUN=false
connection="qemu:///system"

while true; do
    case $1 in
        -c|--connection)
            connection=$2
            shift 2
            ;;
        --dry-run)
            DRY_RUN=true
            shift 1
            ;;
        "")
            usage
            ;;
        --)
            shift 1
            break
            ;;
        *)
            break
            ;;
    esac
done

domain="$1"
snapshot="$2"

test -z "$snapshot" && {
    think "looking for $domain in revert.conf"
    snapshot=$(saturnin conf -1 -p revert.to.snapshot.$domain)
}
test -z "$snapshot" && {
    think "looking for default snapshot name in revert.conf"
    snapshot=$(saturnin conf -1 -p revert.to.snapshot._default_)
}
test -z "$snapshot" && {
    die "could not determine snapshot for $domain"
}

think "reverting $domain to $snapshot"
debug "virsh -c "$connection" snapshot-revert $domain $snapshot"
$DRY_RUN || virsh -c "$connection" snapshot-revert $domain $snapshot

think "starting $domain"
debug "virsh -c "$connection" start $domain"
$DRY_RUN || virsh -c "$connection" start $domain