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Adds the option to use remove-all-inc-of-but-n-full to prune incremen…

…tals of backups with long history.
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vwal committed Jul 22, 2013
1 parent 3faf4e5 commit 9b34c0480299617ba49d8a7d97e60eccfb494f04
Showing with 22 additions and 0 deletions.
  1. +15 −0 duplicity-backup.conf.example
  2. +7 −0 duplicity-backup.sh
@@ -144,6 +144,21 @@ STATIC_OPTIONS="--full-if-older-than 14D --s3-use-new-style"
# You can either remove older than a specific time period:
#CLEAN_UP_TYPE="remove-older-than"
#CLEAN_UP_VARIABLE="31D"
#
# In combination with "remove-older-than" clean-up type, you may want
# to keep only the full backups older than (n) number backup sets. For example,
# let's say you set to CLEAN_UP_TYPE="remove-older-than", CLEAN_UP_VARIABLE
# to "6M" (six months), STATIC_OPTIONS to "--full-if-older-than 7D"
# (a full backup every 7 days), and you execute duplicity-backup once a day.
# After six months you'll have 25 full backups, each with daily incrementals
# in between. Perhaps you're keeping the backups past 1 month "just in case",
# and so the older incrementals are overkill – weekly full backups beyond
# one month backward would suffice. In this case you can set
# "REMOVE_INCREMENTALS_OLDER_THAN to, say, "4" which will delete the
# incrementals for backup sets beyond the four most recent, keeping
# only the full weekly backups for those backup sets. The incrementals
# for the four most recent backup sets remain untouched.
#REMOVE_INCREMENTALS_OLDER_THAN="4"

# Or, If you would rather keep a certain (n) number of full backups (rather
# than removing the files based on their age), you can use what I use:
@@ -391,6 +391,13 @@ duplicity_cleanup()
${ENCRYPT} \
${DEST} >> ${LOGFILE}
echo >> ${LOGFILE}
if [ ! -z ${REMOVE_INCREMENTALS_OLDER_THAN} ] && [[ ${REMOVE_INCREMENTALS_OLDER_THAN} =~ ^[0-9]+$ ]]; then
eval ${ECHO} ${DUPLICITY} remove-all-inc-of-but-n-full ${REMOVE_INCREMENTALS_OLDER_THAN} \
${STATIC_OPTIONS} --force \
${ENCRYPT} \
${DEST} >> ${LOGFILE}
echo >> ${LOGFILE}
fi
}

duplicity_backup()

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