badusage () { echo >&2 "snaprsync: bad usage: $1"; exit 12; }
x () { echo "+ $@"; "$@"; }
+xspawned () { eval "${1}pid=$!; echo \"+[$!] ($1) &\";"; }
+xwait () { eval "echo \"+[\$${1}pid] ($1)...\"; wait \$${1}pid;"; }
while true; do
case "$1" in
test -d $localarea || x mkdir $localarea
ournode=`uname -n`
rsumsfile=for-$ournode.sums
+summer='summer -ACDbtqf'
td=/dev/enoent
rc=12
umask 077
exec 3>$rsumsfile
cd snap-mount
- summer -Ctqf . | sort -t' ' -k2 >&3
- test x"${PIPESTATUS[*]}" = 'x0 0'
+ $summer . | sort -t' ' -k2 >&3
+ test x\"\${PIPESTATUS[*]}\" = 'x0 0'
date -u '+$rhost $datefmt sumsdone'
cd ..
" &
-rsumpid=$!
+xspawned rsum
x $rsync -aHSxz --numeric-ids --delete \
${localprevious:+--link-dest} $localprevious \
$rhost:$rvardir/snap-mount/. $localarea/.
-wait $rsumpid
+date -u "+ $datefmt rsyncdone"
+
+exec 3>$localarea,lsums
+(cd $localarea && \
+ $summer . | sort -t' ' -k2 >&3 && \
+ test x"${PIPESTATUS[*]}" = 'x0 0') &
+xspawned lsum
+exec 3>&-
+
+xwait rsum
+exec 4<&-
+date -u "+ $datefmt sumsdone"
x ssh $rhost "$rsharedir/snap-drop"
if [ "x${localprevious}" != x ]; then
x $rsync -p \
$rhost:$rvardir/$rsumsfile \
"$localarea,rsums"
+
+xwait $lsum
+date -u "+ $datefmt checking"
+
+set +e
+x diff -u "$localarea,rsums" "$localarea,lsums" >"$localarea,sumsdiff"
+diffrc=$?
+set -e
+test $diffrc = 0 || test $diffrc = 1
+
+date -u "+ $datefmt checked $diffrc"
+rc=$diffrc