mirror of
https://github.com/borgbackup/borg.git
synced 2025-03-15 00:21:56 +00:00
move prune command to archiver.prune
This commit is contained in:
Thomas Waldmann
parent
94e6477e51
commit
ea03562b11
3 changed files with 235 additions and 209 deletions
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@ -123,6 +123,7 @@ per_file_ignores =
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src/borg/archiver/debug.py:F405
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src/borg/archiver/help.py:E501,F405
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src/borg/archiver/keys.py:F405
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src/borg/archiver/prune.py:F405
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src/borg/archiver/tar.py:F405
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src/borg/cache.py:E127,E128,E402,E501,E722,W504
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src/borg/fuse.py:E402,E501,E722,W504
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@ -12,7 +12,6 @@ try:
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import json
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import logging
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import os
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import re
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import shlex
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import signal
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import stat
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@ -43,7 +42,6 @@ try:
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from ..helpers import BaseFormatter, ItemFormatter, ArchiveFormatter
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from ..helpers import format_timedelta, format_file_size, parse_file_size, format_archive
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from ..helpers import remove_surrogates, bin_to_hex, eval_escapes
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from ..helpers import interval, prune_within, prune_split, PRUNING_PATTERNS
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from ..helpers import timestamp
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from ..helpers import get_cache_dir, os_stat
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from ..helpers import Manifest
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@ -105,11 +103,14 @@ from .debug import DebugMixIn
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from .help import HelpMixIn
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from .keys import KeysMixIn
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from .locks import LocksMixIn
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from .prune import PruneMixIn
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from .tar import TarMixIn
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from .transfer import TransferMixIn
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class Archiver(ConfigMixIn, DebugMixIn, TarMixIn, BenchmarkMixIn, KeysMixIn, LocksMixIn, HelpMixIn, TransferMixIn):
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class Archiver(
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ConfigMixIn, DebugMixIn, TarMixIn, BenchmarkMixIn, KeysMixIn, LocksMixIn, PruneMixIn, HelpMixIn, TransferMixIn
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):
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def __init__(self, lock_wait=None, prog=None):
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self.exit_code = EXIT_SUCCESS
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self.lock_wait = lock_wait
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@ -1164,93 +1165,6 @@ class Archiver(ConfigMixIn, DebugMixIn, TarMixIn, BenchmarkMixIn, KeysMixIn, Loc
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json_print(basic_json_data(manifest, cache=cache, extra={"archives": output_data}))
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return self.exit_code
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@with_repository(exclusive=True, compatibility=(Manifest.Operation.DELETE,))
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def do_prune(self, args, repository, manifest, key):
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"""Prune repository archives according to specified rules"""
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if not any(
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(args.secondly, args.minutely, args.hourly, args.daily, args.weekly, args.monthly, args.yearly, args.within)
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):
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self.print_error(
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'At least one of the "keep-within", "keep-last", '
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'"keep-secondly", "keep-minutely", "keep-hourly", "keep-daily", '
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'"keep-weekly", "keep-monthly" or "keep-yearly" settings must be specified.'
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)
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return self.exit_code
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checkpoint_re = r"\.checkpoint(\.\d+)?"
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archives_checkpoints = manifest.archives.list(
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glob=args.glob_archives,
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consider_checkpoints=True,
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match_end=r"(%s)?\Z" % checkpoint_re,
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sort_by=["ts"],
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reverse=True,
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)
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is_checkpoint = re.compile(r"(%s)\Z" % checkpoint_re).search
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checkpoints = [arch for arch in archives_checkpoints if is_checkpoint(arch.name)]
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# keep the latest checkpoint, if there is no later non-checkpoint archive
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if archives_checkpoints and checkpoints and archives_checkpoints[0] is checkpoints[0]:
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keep_checkpoints = checkpoints[:1]
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else:
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keep_checkpoints = []
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checkpoints = set(checkpoints)
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# ignore all checkpoint archives to avoid keeping one (which is an incomplete backup)
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# that is newer than a successfully completed backup - and killing the successful backup.
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archives = [arch for arch in archives_checkpoints if arch not in checkpoints]
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keep = []
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# collect the rule responsible for the keeping of each archive in this dict
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# keys are archive ids, values are a tuple
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# (<rulename>, <how many archives were kept by this rule so far >)
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kept_because = {}
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# find archives which need to be kept because of the keep-within rule
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if args.within:
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keep += prune_within(archives, args.within, kept_because)
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# find archives which need to be kept because of the various time period rules
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for rule in PRUNING_PATTERNS.keys():
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num = getattr(args, rule, None)
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if num is not None:
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keep += prune_split(archives, rule, num, kept_because)
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to_delete = (set(archives) | checkpoints) - (set(keep) | set(keep_checkpoints))
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stats = Statistics(iec=args.iec)
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with Cache(repository, key, manifest, lock_wait=self.lock_wait, iec=args.iec) as cache:
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list_logger = logging.getLogger("borg.output.list")
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# set up counters for the progress display
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to_delete_len = len(to_delete)
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archives_deleted = 0
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pi = ProgressIndicatorPercent(total=len(to_delete), msg="Pruning archives %3.0f%%", msgid="prune")
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for archive in archives_checkpoints:
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if archive in to_delete:
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pi.show()
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if args.dry_run:
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log_message = "Would prune:"
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else:
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archives_deleted += 1
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log_message = "Pruning archive (%d/%d):" % (archives_deleted, to_delete_len)
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archive = Archive(
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repository, key, manifest, archive.name, cache, consider_part_files=args.consider_part_files
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)
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archive.delete(stats, forced=args.forced)
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else:
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if is_checkpoint(archive.name):
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log_message = "Keeping checkpoint archive:"
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else:
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log_message = "Keeping archive (rule: {rule} #{num}):".format(
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rule=kept_because[archive.id][0], num=kept_because[archive.id][1]
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)
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if args.output_list:
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list_logger.info(
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"{message:<40} {archive}".format(message=log_message, archive=format_archive(archive))
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)
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pi.finish()
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if to_delete and not args.dry_run:
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manifest.write()
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repository.commit(compact=False, save_space=args.save_space)
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cache.commit()
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if args.stats:
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log_multi(str(stats), logger=logging.getLogger("borg.output.stats"))
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return self.exit_code
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@with_repository(cache=True, exclusive=True, compatibility=(Manifest.Operation.CHECK,))
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def do_recreate(self, args, repository, manifest, key, cache):
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"""Re-create archives"""
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@ -1714,6 +1628,7 @@ class Archiver(ConfigMixIn, DebugMixIn, TarMixIn, BenchmarkMixIn, KeysMixIn, Loc
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self.build_parser_benchmarks(subparsers, common_parser, mid_common_parser)
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self.build_parser_locks(subparsers, common_parser, mid_common_parser)
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self.build_parser_prune(subparsers, common_parser, mid_common_parser)
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# borg check
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check_epilog = process_epilog(
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@ -2888,125 +2803,6 @@ class Archiver(ConfigMixIn, DebugMixIn, TarMixIn, BenchmarkMixIn, KeysMixIn, Loc
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)
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define_borg_mount(subparser)
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# borg prune
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prune_epilog = process_epilog(
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"""
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The prune command prunes a repository by deleting all archives not matching
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any of the specified retention options.
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Important: Repository disk space is **not** freed until you run ``borg compact``.
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This command is normally used by automated backup scripts wanting to keep a
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certain number of historic backups. This retention policy is commonly referred to as
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`GFS <https://en.wikipedia.org/wiki/Backup_rotation_scheme#Grandfather-father-son>`_
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(Grandfather-father-son) backup rotation scheme.
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Also, prune automatically removes checkpoint archives (incomplete archives left
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behind by interrupted backup runs) except if the checkpoint is the latest
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archive (and thus still needed). Checkpoint archives are not considered when
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comparing archive counts against the retention limits (``--keep-X``).
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If a prefix is set with -P, then only archives that start with the prefix are
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considered for deletion and only those archives count towards the totals
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specified by the rules.
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Otherwise, *all* archives in the repository are candidates for deletion!
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There is no automatic distinction between archives representing different
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contents. These need to be distinguished by specifying matching prefixes.
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If you have multiple sequences of archives with different data sets (e.g.
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from different machines) in one shared repository, use one prune call per
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data set that matches only the respective archives using the -P option.
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The ``--keep-within`` option takes an argument of the form "<int><char>",
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where char is "H", "d", "w", "m", "y". For example, ``--keep-within 2d`` means
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to keep all archives that were created within the past 48 hours.
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"1m" is taken to mean "31d". The archives kept with this option do not
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count towards the totals specified by any other options.
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A good procedure is to thin out more and more the older your backups get.
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As an example, ``--keep-daily 7`` means to keep the latest backup on each day,
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up to 7 most recent days with backups (days without backups do not count).
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The rules are applied from secondly to yearly, and backups selected by previous
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rules do not count towards those of later rules. The time that each backup
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starts is used for pruning purposes. Dates and times are interpreted in
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the local timezone, and weeks go from Monday to Sunday. Specifying a
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negative number of archives to keep means that there is no limit. As of borg
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1.2.0, borg will retain the oldest archive if any of the secondly, minutely,
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hourly, daily, weekly, monthly, or yearly rules was not otherwise able to meet
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its retention target. This enables the first chronological archive to continue
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aging until it is replaced by a newer archive that meets the retention criteria.
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The ``--keep-last N`` option is doing the same as ``--keep-secondly N`` (and it will
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keep the last N archives under the assumption that you do not create more than one
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backup archive in the same second).
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When using ``--stats``, you will get some statistics about how much data was
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deleted - the "Deleted data" deduplicated size there is most interesting as
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that is how much your repository will shrink.
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Please note that the "All archives" stats refer to the state after pruning.
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"""
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)
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subparser = subparsers.add_parser(
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"prune",
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parents=[common_parser],
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add_help=False,
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description=self.do_prune.__doc__,
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epilog=prune_epilog,
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formatter_class=argparse.RawDescriptionHelpFormatter,
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help="prune archives",
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)
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subparser.set_defaults(func=self.do_prune)
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subparser.add_argument("-n", "--dry-run", dest="dry_run", action="store_true", help="do not change repository")
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subparser.add_argument(
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"--force",
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dest="forced",
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action="store_true",
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help="force pruning of corrupted archives, " "use ``--force --force`` in case ``--force`` does not work.",
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)
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subparser.add_argument(
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"-s", "--stats", dest="stats", action="store_true", help="print statistics for the deleted archive"
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)
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subparser.add_argument(
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"--list", dest="output_list", action="store_true", help="output verbose list of archives it keeps/prunes"
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)
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subparser.add_argument(
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"--keep-within",
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metavar="INTERVAL",
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dest="within",
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type=interval,
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help="keep all archives within this time interval",
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)
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subparser.add_argument(
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"--keep-last",
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"--keep-secondly",
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dest="secondly",
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type=int,
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default=0,
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help="number of secondly archives to keep",
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)
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subparser.add_argument(
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"--keep-minutely", dest="minutely", type=int, default=0, help="number of minutely archives to keep"
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)
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subparser.add_argument(
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"-H", "--keep-hourly", dest="hourly", type=int, default=0, help="number of hourly archives to keep"
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)
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subparser.add_argument(
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"-d", "--keep-daily", dest="daily", type=int, default=0, help="number of daily archives to keep"
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)
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subparser.add_argument(
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"-w", "--keep-weekly", dest="weekly", type=int, default=0, help="number of weekly archives to keep"
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)
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subparser.add_argument(
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"-m", "--keep-monthly", dest="monthly", type=int, default=0, help="number of monthly archives to keep"
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)
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subparser.add_argument(
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"-y", "--keep-yearly", dest="yearly", type=int, default=0, help="number of yearly archives to keep"
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)
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define_archive_filters_group(subparser, sort_by=False, first_last=False)
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subparser.add_argument(
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"--save-space", dest="save_space", action="store_true", help="work slower, but using less space"
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)
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# borg recreate
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recreate_epilog = process_epilog(
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"""
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229
src/borg/archiver/prune.py
Normal file
229
src/borg/archiver/prune.py
Normal file
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@ -0,0 +1,229 @@
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import argparse
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import logging
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import re
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from .common import with_repository
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from ..archive import Archive, Statistics
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from ..cache import Cache
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from ..constants import * # NOQA
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from ..helpers import format_archive
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from ..helpers import interval, prune_within, prune_split, PRUNING_PATTERNS
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from ..helpers import Manifest
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from ..helpers import log_multi
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from ..helpers import ProgressIndicatorPercent
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from ..logger import create_logger
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logger = create_logger()
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class PruneMixIn:
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@with_repository(exclusive=True, compatibility=(Manifest.Operation.DELETE,))
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def do_prune(self, args, repository, manifest, key):
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"""Prune repository archives according to specified rules"""
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if not any(
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(args.secondly, args.minutely, args.hourly, args.daily, args.weekly, args.monthly, args.yearly, args.within)
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):
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self.print_error(
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'At least one of the "keep-within", "keep-last", '
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'"keep-secondly", "keep-minutely", "keep-hourly", "keep-daily", '
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'"keep-weekly", "keep-monthly" or "keep-yearly" settings must be specified.'
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)
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return self.exit_code
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checkpoint_re = r"\.checkpoint(\.\d+)?"
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archives_checkpoints = manifest.archives.list(
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glob=args.glob_archives,
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consider_checkpoints=True,
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match_end=r"(%s)?\Z" % checkpoint_re,
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sort_by=["ts"],
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reverse=True,
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)
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is_checkpoint = re.compile(r"(%s)\Z" % checkpoint_re).search
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checkpoints = [arch for arch in archives_checkpoints if is_checkpoint(arch.name)]
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# keep the latest checkpoint, if there is no later non-checkpoint archive
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if archives_checkpoints and checkpoints and archives_checkpoints[0] is checkpoints[0]:
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keep_checkpoints = checkpoints[:1]
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else:
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keep_checkpoints = []
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checkpoints = set(checkpoints)
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# ignore all checkpoint archives to avoid keeping one (which is an incomplete backup)
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# that is newer than a successfully completed backup - and killing the successful backup.
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archives = [arch for arch in archives_checkpoints if arch not in checkpoints]
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keep = []
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# collect the rule responsible for the keeping of each archive in this dict
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# keys are archive ids, values are a tuple
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# (<rulename>, <how many archives were kept by this rule so far >)
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kept_because = {}
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# find archives which need to be kept because of the keep-within rule
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if args.within:
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keep += prune_within(archives, args.within, kept_because)
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# find archives which need to be kept because of the various time period rules
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for rule in PRUNING_PATTERNS.keys():
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num = getattr(args, rule, None)
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if num is not None:
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keep += prune_split(archives, rule, num, kept_because)
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to_delete = (set(archives) | checkpoints) - (set(keep) | set(keep_checkpoints))
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stats = Statistics(iec=args.iec)
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with Cache(repository, key, manifest, lock_wait=self.lock_wait, iec=args.iec) as cache:
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list_logger = logging.getLogger("borg.output.list")
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# set up counters for the progress display
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to_delete_len = len(to_delete)
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archives_deleted = 0
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pi = ProgressIndicatorPercent(total=len(to_delete), msg="Pruning archives %3.0f%%", msgid="prune")
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for archive in archives_checkpoints:
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if archive in to_delete:
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pi.show()
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if args.dry_run:
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log_message = "Would prune:"
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else:
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archives_deleted += 1
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log_message = "Pruning archive (%d/%d):" % (archives_deleted, to_delete_len)
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archive = Archive(
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repository, key, manifest, archive.name, cache, consider_part_files=args.consider_part_files
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)
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archive.delete(stats, forced=args.forced)
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else:
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if is_checkpoint(archive.name):
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log_message = "Keeping checkpoint archive:"
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else:
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log_message = "Keeping archive (rule: {rule} #{num}):".format(
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rule=kept_because[archive.id][0], num=kept_because[archive.id][1]
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)
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if args.output_list:
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list_logger.info(
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"{message:<40} {archive}".format(message=log_message, archive=format_archive(archive))
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)
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pi.finish()
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if to_delete and not args.dry_run:
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manifest.write()
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repository.commit(compact=False, save_space=args.save_space)
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cache.commit()
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if args.stats:
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log_multi(str(stats), logger=logging.getLogger("borg.output.stats"))
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return self.exit_code
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def build_parser_prune(self, subparsers, common_parser, mid_common_parser):
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from .common import process_epilog
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from .common import define_archive_filters_group
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prune_epilog = process_epilog(
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"""
|
||||
The prune command prunes a repository by deleting all archives not matching
|
||||
any of the specified retention options.
|
||||
|
||||
Important: Repository disk space is **not** freed until you run ``borg compact``.
|
||||
|
||||
This command is normally used by automated backup scripts wanting to keep a
|
||||
certain number of historic backups. This retention policy is commonly referred to as
|
||||
`GFS <https://en.wikipedia.org/wiki/Backup_rotation_scheme#Grandfather-father-son>`_
|
||||
(Grandfather-father-son) backup rotation scheme.
|
||||
|
||||
Also, prune automatically removes checkpoint archives (incomplete archives left
|
||||
behind by interrupted backup runs) except if the checkpoint is the latest
|
||||
archive (and thus still needed). Checkpoint archives are not considered when
|
||||
comparing archive counts against the retention limits (``--keep-X``).
|
||||
|
||||
If a prefix is set with -P, then only archives that start with the prefix are
|
||||
considered for deletion and only those archives count towards the totals
|
||||
specified by the rules.
|
||||
Otherwise, *all* archives in the repository are candidates for deletion!
|
||||
There is no automatic distinction between archives representing different
|
||||
contents. These need to be distinguished by specifying matching prefixes.
|
||||
|
||||
If you have multiple sequences of archives with different data sets (e.g.
|
||||
from different machines) in one shared repository, use one prune call per
|
||||
data set that matches only the respective archives using the -P option.
|
||||
|
||||
The ``--keep-within`` option takes an argument of the form "<int><char>",
|
||||
where char is "H", "d", "w", "m", "y". For example, ``--keep-within 2d`` means
|
||||
to keep all archives that were created within the past 48 hours.
|
||||
"1m" is taken to mean "31d". The archives kept with this option do not
|
||||
count towards the totals specified by any other options.
|
||||
|
||||
A good procedure is to thin out more and more the older your backups get.
|
||||
As an example, ``--keep-daily 7`` means to keep the latest backup on each day,
|
||||
up to 7 most recent days with backups (days without backups do not count).
|
||||
The rules are applied from secondly to yearly, and backups selected by previous
|
||||
rules do not count towards those of later rules. The time that each backup
|
||||
starts is used for pruning purposes. Dates and times are interpreted in
|
||||
the local timezone, and weeks go from Monday to Sunday. Specifying a
|
||||
negative number of archives to keep means that there is no limit. As of borg
|
||||
1.2.0, borg will retain the oldest archive if any of the secondly, minutely,
|
||||
hourly, daily, weekly, monthly, or yearly rules was not otherwise able to meet
|
||||
its retention target. This enables the first chronological archive to continue
|
||||
aging until it is replaced by a newer archive that meets the retention criteria.
|
||||
|
||||
The ``--keep-last N`` option is doing the same as ``--keep-secondly N`` (and it will
|
||||
keep the last N archives under the assumption that you do not create more than one
|
||||
backup archive in the same second).
|
||||
|
||||
When using ``--stats``, you will get some statistics about how much data was
|
||||
deleted - the "Deleted data" deduplicated size there is most interesting as
|
||||
that is how much your repository will shrink.
|
||||
Please note that the "All archives" stats refer to the state after pruning.
|
||||
"""
|
||||
)
|
||||
subparser = subparsers.add_parser(
|
||||
"prune",
|
||||
parents=[common_parser],
|
||||
add_help=False,
|
||||
description=self.do_prune.__doc__,
|
||||
epilog=prune_epilog,
|
||||
formatter_class=argparse.RawDescriptionHelpFormatter,
|
||||
help="prune archives",
|
||||
)
|
||||
subparser.set_defaults(func=self.do_prune)
|
||||
subparser.add_argument("-n", "--dry-run", dest="dry_run", action="store_true", help="do not change repository")
|
||||
subparser.add_argument(
|
||||
"--force",
|
||||
dest="forced",
|
||||
action="store_true",
|
||||
help="force pruning of corrupted archives, " "use ``--force --force`` in case ``--force`` does not work.",
|
||||
)
|
||||
subparser.add_argument(
|
||||
"-s", "--stats", dest="stats", action="store_true", help="print statistics for the deleted archive"
|
||||
)
|
||||
subparser.add_argument(
|
||||
"--list", dest="output_list", action="store_true", help="output verbose list of archives it keeps/prunes"
|
||||
)
|
||||
subparser.add_argument(
|
||||
"--keep-within",
|
||||
metavar="INTERVAL",
|
||||
dest="within",
|
||||
type=interval,
|
||||
help="keep all archives within this time interval",
|
||||
)
|
||||
subparser.add_argument(
|
||||
"--keep-last",
|
||||
"--keep-secondly",
|
||||
dest="secondly",
|
||||
type=int,
|
||||
default=0,
|
||||
help="number of secondly archives to keep",
|
||||
)
|
||||
subparser.add_argument(
|
||||
"--keep-minutely", dest="minutely", type=int, default=0, help="number of minutely archives to keep"
|
||||
)
|
||||
subparser.add_argument(
|
||||
"-H", "--keep-hourly", dest="hourly", type=int, default=0, help="number of hourly archives to keep"
|
||||
)
|
||||
subparser.add_argument(
|
||||
"-d", "--keep-daily", dest="daily", type=int, default=0, help="number of daily archives to keep"
|
||||
)
|
||||
subparser.add_argument(
|
||||
"-w", "--keep-weekly", dest="weekly", type=int, default=0, help="number of weekly archives to keep"
|
||||
)
|
||||
subparser.add_argument(
|
||||
"-m", "--keep-monthly", dest="monthly", type=int, default=0, help="number of monthly archives to keep"
|
||||
)
|
||||
subparser.add_argument(
|
||||
"-y", "--keep-yearly", dest="yearly", type=int, default=0, help="number of yearly archives to keep"
|
||||
)
|
||||
define_archive_filters_group(subparser, sort_by=False, first_last=False)
|
||||
subparser.add_argument(
|
||||
"--save-space", dest="save_space", action="store_true", help="work slower, but using less space"
|
||||
)
|
||||
Loading…
Add table
Reference in a new issue