From 307c42c2cd5bfa800902805ce99c5558f1afcfd0 Mon Sep 17 00:00:00 2001
From: ianmdlvl <ianmdlvl>
Date: Fri, 9 Jun 2006 23:32:46 +0000
Subject: [PATCH] seems to work with test case: 
 PATH=~ian/things/chiark-utils/cprogs:$PATH ./snaprsync --bwlimit=50 davenant
 /dev/vg_davenant/lv_u /u /bigscratch/private/destination

---
 backup/snaprsync | 34 ++++++++++++++++++++++++++++++----
 1 file changed, 30 insertions(+), 4 deletions(-)

diff --git a/backup/snaprsync b/backup/snaprsync
index c9e77fd..67716bb 100755
--- a/backup/snaprsync
+++ b/backup/snaprsync
@@ -17,6 +17,8 @@ set -e
 
 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
@@ -57,6 +59,7 @@ ssh $rhost ls -d $rvardir
 test -d $localarea || x mkdir $localarea
 ournode=`uname -n`
 rsumsfile=for-$ournode.sums
+summer='summer -ACDbtqf'
 
 td=/dev/enoent
 rc=12
@@ -77,16 +80,27 @@ ssh $rhost <$td/sentinel 4<&- "
   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
@@ -95,3 +109,15 @@ fi
 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
-- 
2.30.2