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# This file is part of Relax-and-Recover, licensed under the GNU General
# Public License. Refer to the included COPYING for full text of license.
#
# borg-functions.sh
function borg_set_vars {
# Construct Borg arguments for archive pruning.
# No need to check config values of $BORG_PRUNE* family
# Borg will bail out with error if values are wrong.
BORGBACKUP_OPT_PRUNE=()
if [[ -n $BORGBACKUP_PRUNE_KEEP_WITHIN ]]; then
BORGBACKUP_OPT_PRUNE+=( --keep-within "$BORGBACKUP_PRUNE_KEEP_WITHIN" )
elif [[ -n $BORGBACKUP_PRUNE_WITHIN ]]; then
LogPrint "BORGBACKUP_PRUNE_WITHIN is deprecated, use BORGBACKUP_PRUNE_KEEP_WITHIN instead!"
BORGBACKUP_OPT_PRUNE+=( --keep-within "$BORGBACKUP_PRUNE_WITHIN" )
fi
if [[ -n $BORGBACKUP_PRUNE_KEEP_LAST ]]; then
BORGBACKUP_OPT_PRUNE+=( --keep-last "$BORGBACKUP_PRUNE_KEEP_LAST" )
elif [[ -n $BORGBACKUP_PRUNE_LAST ]]; then
LogPrint "BORGBACKUP_PRUNE_LAST is deprecated, use BORGBACKUP_PRUNE_KEEP_LAST instead!"
BORGBACKUP_OPT_PRUNE+=( --keep-last "$BORGBACKUP_PRUNE_LAST" )
fi
if [[ -n $BORGBACKUP_PRUNE_KEEP_MINUTELY ]]; then
BORGBACKUP_OPT_PRUNE+=( --keep-minutely "$BORGBACKUP_PRUNE_KEEP_MINUTELY" )
elif [[ -n $BORGBACKUP_PRUNE_MINUTELY ]]; then
LogPrint "BORGBACKUP_PRUNE_MINUTELY is deprecated, use BORGBACKUP_PRUNE_KEEP_MINUTELY instead!"
BORGBACKUP_OPT_PRUNE+=( --keep-minutely "$BORGBACKUP_PRUNE_MINUTELY" )
fi
if [[ -n $BORGBACKUP_PRUNE_KEEP_HOURLY ]]; then
BORGBACKUP_OPT_PRUNE+=( --keep-hourly "$BORGBACKUP_PRUNE_KEEP_HOURLY" )
elif [[ -n $BORGBACKUP_PRUNE_HOURLY ]]; then
LogPrint "BORGBACKUP_PRUNE_HOURLY is deprecated, use BORGBACKUP_PRUNE_KEEP_HOURLY instead!"
BORGBACKUP_OPT_PRUNE+=( --keep-hourly "$BORGBACKUP_PRUNE_HOURLY" )
fi
if [[ -n $BORGBACKUP_PRUNE_KEEP_DAILY ]]; then
BORGBACKUP_OPT_PRUNE+=( --keep-daily "$BORGBACKUP_PRUNE_KEEP_DAILY" )
elif [[ -n $BORGBACKUP_PRUNE_DAILY ]]; then
LogPrint "BORGBACKUP_PRUNE_DAILY is deprecated, use BORGBACKUP_PRUNE_KEEP_DAILY instead!"
BORGBACKUP_OPT_PRUNE+=( --keep-daily "$BORGBACKUP_PRUNE_DAILY" )
fi
if [[ -n $BORGBACKUP_PRUNE_KEEP_WEEKLY ]]; then
BORGBACKUP_OPT_PRUNE+=( --keep-weekly "$BORGBACKUP_PRUNE_KEEP_WEEKLY" )
elif [[ -n $BORGBACKUP_PRUNE_WEEKLY ]]; then
LogPrint "BORGBACKUP_PRUNE_WEEKLY is deprecated, use BORGBACKUP_PRUNE_KEEP_WEEKLY instead!"
BORGBACKUP_OPT_PRUNE+=( --keep-weekly "$BORGBACKUP_PRUNE_WEEKLY" )
fi
if [[ -n $BORGBACKUP_PRUNE_KEEP_MONTHLY ]]; then
BORGBACKUP_OPT_PRUNE+=( --keep-monthly "$BORGBACKUP_PRUNE_KEEP_MONTHLY" )
elif [[ -n $BORGBACKUP_PRUNE_MONTHLY ]]; then
LogPrint "BORGBACKUP_PRUNE_MONTHLY is deprecated, use BORGBACKUP_PRUNE_KEEP_MONTHLY instead!"
BORGBACKUP_OPT_PRUNE+=( --keep-monthly "$BORGBACKUP_PRUNE_MONTHLY" )
fi
if [[ -n $BORGBACKUP_PRUNE_KEEP_YEARLY ]]; then
BORGBACKUP_OPT_PRUNE+=( --keep-yearly "$BORGBACKUP_PRUNE_KEEP_YEARLY" )
elif [[ -n $BORGBACKUP_PRUNE_YEARLY ]]; then
LogPrint "BORGBACKUP_PRUNE_YEARLY is deprecated, use BORGBACKUP_PRUNE_KEEP_YEARLY instead!"
BORGBACKUP_OPT_PRUNE+=( --keep-yearly "$BORGBACKUP_PRUNE_YEARLY" )
fi
# Prepare option for Borg compression.
# Empty BORGBACKUP_COMPRESSION will default to "none" compression.
BORGBACKUP_OPT_COMPRESSION=()
if [[ -n $BORGBACKUP_COMPRESSION ]]; then
BORGBACKUP_OPT_COMPRESSION=( --compression "$BORGBACKUP_COMPRESSION" )
fi
# Prepare option for Borg encryption.
# Empty BORGBACKUP_ENC_TYPE will default to "repokey".
BORGBACKUP_OPT_ENCRYPTION=()
if [[ -n $BORGBACKUP_ENC_TYPE ]]; then
# shellcheck disable=SC2034
BORGBACKUP_OPT_ENCRYPTION=( --encryption "$BORGBACKUP_ENC_TYPE" )
fi
# Prepare option for Borg remote-path.
# Empty BORGBACKUP_REMOTE_PATH will default to "borg".
BORGBACKUP_OPT_REMOTE_PATH=()
if [[ -n $BORGBACKUP_REMOTE_PATH ]]; then
BORGBACKUP_OPT_REMOTE_PATH=( --remote-path "$BORGBACKUP_REMOTE_PATH" )
fi
# Prepare option for Borg umask.
# Empty BORGBACKUP_UMASK will default to 0077.
BORGBACKUP_OPT_UMASK=()
if [[ -n $BORGBACKUP_UMASK ]]; then
BORGBACKUP_OPT_UMASK=( --umask "$BORGBACKUP_UMASK" )
fi
# Set archive cache file
BORGBACKUP_ARCHIVE_CACHE=$TMP_DIR/borg_archive
# Set file to save borg stderr output
BORGBACKUP_STDERR_FILE=$TMP_DIR/borg_stderr
BORGBACKUP_RESTORE_ARCHIVES_SHOW_MAX=${BORGBACKUP_RESTORE_ARCHIVES_SHOW_MAX:-10}
[[ $BORGBACKUP_RESTORE_ARCHIVES_SHOW_MAX -ge 0 ]] \
|| Error "BORGBACKUP_RESTORE_ARCHIVES_SHOW_MAX '$BORGBACKUP_RESTORE_ARCHIVES_SHOW_MAX' must be >= 0"
}
function borg_list
{
# shellcheck disable=SC2154
borg list "${BORGBACKUP_OPT_REMOTE_PATH[@]}" "${borg_dst_dev}${BORGBACKUP_REPO}" \
2> "$BORGBACKUP_STDERR_FILE"
}
# Query Borg server for repository information
# and store it to BORGBACKUP_ARCHIVE_CACHE.
# This avoids repeatedly querying Borg repository, which could be slow.
function borg_archive_cache_create
{
borg_list > "$BORGBACKUP_ARCHIVE_CACHE"
}
function borg_create
{
LogPrint "Creating backup archive \
'${BORGBACKUP_ARCHIVE_PREFIX}_$BORGBACKUP_SUFFIX' \
in Borg repository $BORGBACKUP_REPO on ${BORGBACKUP_HOST:-USB}"
# Has to be $verbose, not "$verbose", since it's used as option.
# shellcheck disable=SC2086,SC2154
borg create $verbose --one-file-system "${borg_additional_options[@]}" \
"${BORGBACKUP_OPT_COMPRESSION[@]}" "${BORGBACKUP_OPT_REMOTE_PATH[@]}" \
"${BORGBACKUP_OPT_UMASK[@]}" --exclude-from "$TMP_DIR/backup-exclude.txt" \
"${borg_dst_dev}${BORGBACKUP_REPO}::${BORGBACKUP_ARCHIVE_PREFIX}_$BORGBACKUP_SUFFIX" \
"${include_list[@]}"
}
function borg_prune
{
LogPrint "Pruning old backup archives in Borg repository $BORGBACKUP_REPO \
on ${BORGBACKUP_HOST:-USB}"
# Has to be $verbose, not "$verbose", since it's used as option.
# shellcheck disable=SC2086
borg prune $verbose "${borg_additional_options[@]}" "${BORGBACKUP_OPT_PRUNE[@]}" \
"${BORGBACKUP_OPT_REMOTE_PATH[@]}" "${BORGBACKUP_OPT_UMASK[@]}" \
--prefix "${BORGBACKUP_ARCHIVE_PREFIX}_" \
"${borg_dst_dev}${BORGBACKUP_REPO}"
}
function borg_extract
{
# Scope of LC_ALL is only within run of `borg extract'.
# This avoids Borg problems with restoring UTF-8 encoded files names in archive
# and should not interfere with remaining stages of rear recover.
# This is still not the ideal solution, but best I can think of so far :-/.
LogPrint "Recovering from backup archive $BORGBACKUP_REPO::$BORGBACKUP_ARCHIVE \
on ${BORGBACKUP_HOST:-USB}"
# Has to be $verbose, not "$verbose", since it's used as option.
# shellcheck disable=SC2086
LC_ALL=en_US.UTF-8 \
borg extract $verbose --sparse "${borg_additional_options[@]}" \
"${BORGBACKUP_OPT_REMOTE_PATH[@]}" \
"${borg_dst_dev}${BORGBACKUP_REPO}::$BORGBACKUP_ARCHIVE"
}