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|
#!/bin/bash
# backupStatistics version #VERSION#
set -e
[ -r "#ETCDIR#/backup.conf" ] && \
. "#ETCDIR#/backup.conf"
do_stage()
{
case $1 in
1)
if [ "$2" == '##DESCRIBE##' ]
then
echo 'generate lists $filename -> $inode'
return 0
fi
dest="${backups["${backupID}"]%% *}"
dest="${dest%/}"
while [ ! -d "${dest}" ] && [ ${maxWait} -gt 0 ]
do
sleep 1
maxWait=$[${maxWait}-1]
done
rm -f "${cacheDir}/${backupID}.inodes"
for dat in $(ls "${dest}")
do
echo "${dat}:"
find "${dest}/${dat}" -type f -exec \
stat -c'%i %n' {} \; >> \
"${cacheDir}/${backupID}.inodes"
done
;;
2)
if [ "$2" == '##DESCRIBE##' ]
then
echo 'sort previous lists by $inode'
return 0
fi
tmpDirA="$(mktemp -d)"
tmpDirB="$(mktemp -d "${cacheDir}/tmp.XXXXXX")"
sort -T "${tmpDirA}" -T "${tmpDirB}" -u "${cacheDir}/${backupID}.inodes" > \
"${cacheDir}/${backupID}.inodes.sorted"
rmdir "${tmpDirA}" "${tmpDirB}"
;;
3)
if [ "$2" == '##DESCRIBE##' ]
then
echo 'generate lists $inode -> $contentHash'
return 0
fi
tmpDirA="$(mktemp -d)"
tmpDirB="$(mktemp -d "${cacheDir}/tmp.XXXXXX")"
uniq -m1 "${cacheDir}/${backupID}.inodes.sorted" | \
parallel \
sha512sum {=s/^[[:digit:]]\+ //=} \| \
sed "\"s|^\([0-9a-f]\{128\}\) .*\$|\1 "{=s/^\([[:digit:]]\+\) .*/\\1/=}"|\"" \
\; | \
sort -T "${tmpDirA}" -T "${tmpDirB}" > \
"${cacheDir}/${backupID}.content"
rmdir "${tmpDirA}" "${tmpDirB}"
;;
4)
if [ "$2" == '##DESCRIBE##' ]
then
echo 'find duplicate hashes'
return 0
fi
(
uniq -m1 --all-repeated=separate "${cacheDir}/${backupID}.content"
echo ""
) | \
sed 's|^\S\+ ||' | \
while read s
do
if [ -z "${s}" ]
then
echo ""
else
echo -n "${s} "
fi
done | \
sed 's| $||' > \
"${cacheDir}/${backupID}.duplicates"
;;
5)
if [ "$2" == '##DESCRIBE##' ]
then
echo 'remove inodes with duplicate hashes'
return 0
fi
while read line
do
original="$(
grep "^${line%% *} " "${cacheDir}/${backupID}.inodes.sorted" | \
sed 's|^\S\+ ||'
)"
for kopieInode in ${line#* }
do
kopie="$(
grep "^${kopieInode} " "${cacheDir}/${backupID}.inodes.sorted" | \
sed 's|^\S\+ ||'
)"
diff "${original}" "${kopie}"
if ${dummy}
then
echo "rm \"${kopie}\""
echo "ln \"${original}\" \"${kopie}\""
else
exit 1
DO NOT EXECUTE YET
# rm "${kopie}"
# ln "${original}" "${kopie}"
fi
done
done < \
"${cacheDir}/${backupID}.duplicates"
;;
esac
}
usage()
{
>&2 echo \
'Usage: backupStatistics [OPTION]
Search and tidy duplicate and not-hardlinked files in the backups.
With no options, tidy up all backups. THIS CAN BE VERY TIME CONSUMING.
Mandatory arguments to long options are mandatory for short options too.
-d, --dummy only generate lists, do not modify backupfiles
-m, --max=maxNum stop execution after step maxNum
-s, --skip=skipNum skip first skipNum steps
#HELPTEXT# #
the executed steps are:'
for ((stage=1; stage<=#NUMSTAGES#; stage++))
do
>&2 echo ''
>&2 echo " ${stage}. $(do_stage ${stage} '##DESCRIBE##')"
done
>&2 echo ''
[ -z "$1" ] && exit 1
exit $1
}
eval set -- "$(
getopt -o dm:s: \
--long dummy \
--long help \
--long max: \
--long skip: \
--long version \
-n "$(basename "$0")" -- "$@" || \
echo usage
)"
dummy=false
maxNum=#NUMSTAGES#
skipNum=0
while true; do
case "$1" in
-d|--dummy)
dummy=true
;;
--help)
usage 0
;;
-m|--max)
shift
maxNum=$1
;;
-s|--skip)
shift
skipNum=$1
;;
--version)
>&2 echo '#VERSION#'
exit 0
;;
--)
shift
[ $# -gt 0 ] && echo 'ERROR: Unknown parameter: '"$#" && usage
break
;;
*)
>&2 echo 'That should not happen, '"$1"' unknown though ...'
exit -1
;;
esac
shift
done
if [ ! -d "${cacheDir}" ] || [ -z "${cacheDir}" ]
then
>&2 "ERROR: Cache directory must exist, '${cacheDir}' does not! Closing."
exit 1
fi
if [ ! "${skipNum}" -ge 0 ] || \
[ ! "${skipNum}" -le #NUMSTAGES# ] || \
[ ! "${maxNum}" -ge 0 ] || \
[ ! "${maxNum}" -le #NUMSTAGES# ]
then
usage
fi
for ((stage=${skipNum}+1; stage<=${maxNum}; stage++))
do
echo "entering stage ${stage} ($(do_stage ${stage} '##DESCRIBE##')) ..."
for backupID in "${!backups[@]}"
do
echo "${backupID}:"
do_stage ${stage} "${backupID}"
done
echo "... stage ${stage} completed."
done
|
