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use find instead of mc for pruning local backups

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This commit is contained in:
Frederik Ring
2021-08-20 08:56:04 +02:00
parent 0782af88f4
commit 278df9b2f7
4 changed files with 78 additions and 23 deletions
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72
src/backup.sh
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@@ -103,36 +103,62 @@ fi
info "Backup finished"
echo "Will wait for next scheduled backup."
probe_expired () {
local target=$1
local is_local=$2
if [ -z "$is_local" ]; then
mc rm $MC_GLOBAL_OPTIONS --fake --recursive --force \
--older-than "${BACKUP_RETENTION_DAYS}d" \
"$target"
else
find $target* -type f -mtime $BACKUP_RETENTION_DAYS
fi
}
probe_all () {
local target=$1
local is_local=$2
if [ -z "$is_local" ]; then
mc ls $MC_GLOBAL_OPTIONS "$target"
else
find $target* -type f
fi
}
delete () {
local target=$1
local is_local=$2
if [ -z "$is_local" ]; then
mc rm $MC_GLOBAL_OPTIONS --recursive --force \
--older-than "${BACKUP_RETENTION_DAYS}d" \
"$target"
else
find $target* -delete -type f -mtime $BACKUP_RETENTION_DAYS
fi
}
prune () {
target=$1
local target=$1
local is_local=$2
if [ ! -z "$BACKUP_PRUNING_PREFIX" ]; then
target="$target/${BACKUP_PRUNING_PREFIX}"
fi
rule_applies_to=$(
mc rm $MC_GLOBAL_OPTIONS --fake --recursive --force \
--older-than "${BACKUP_RETENTION_DAYS}d" \
"$target" \
| wc -l
)
rule_applies_to=$(probe_expired "$target" "$is_local" | wc -l)
if [ "$rule_applies_to" == "0" ]; then
echo "No backups found older than the configured retention period of $BACKUP_RETENTION_DAYS days."
echo "No backups found older than the configured retention period of ${BACKUP_RETENTION_DAYS} days."
echo "Doing nothing."
exit 0
else
total=$(probe_all "$target" "$is_local" | wc -l)
if [ "$rule_applies_to" == "$total" ]; then
echo "Using a retention of ${BACKUP_RETENTION_DAYS} days would prune all currently existing backups, will not continue."
echo "If this is what you want, please remove files manually instead of using this script."
else
delete "$target" "$is_local"
echo "Successfully pruned ${rule_applies_to} backups older than ${BACKUP_RETENTION_DAYS} days."
fi
fi
total=$(mc ls $MC_GLOBAL_OPTIONS "$target" | wc -l)
if [ "$rule_applies_to" == "$total" ]; then
echo "Using a retention of ${BACKUP_RETENTION_DAYS} days would prune all currently existing backups, will not continue."
echo "If this is what you want, please remove files manually instead of using this script."
exit 1
fi
mc rm $MC_GLOBAL_OPTIONS \
--recursive --force \
--older-than "${BACKUP_RETENTION_DAYS}d" "$target"
echo "Successfully pruned ${rule_applies_to} backups older than ${BACKUP_RETENTION_DAYS} days."
}
if [ ! -z "$BACKUP_RETENTION_DAYS" ]; then
@@ -145,6 +171,6 @@ if [ ! -z "$BACKUP_RETENTION_DAYS" ]; then
fi
if [ -d "$BACKUP_ARCHIVE" ]; then
info "Pruning old backups from local archive"
prune "$BACKUP_ARCHIVE"
prune "$BACKUP_ARCHIVE" "local"
fi
fi