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tunasync_snapshot_gc.py
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tunasync_snapshot_gc.py
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#!/usr/bin/env python2
# -*- coding:utf-8 -*-
import re
import sh
import os
import argparse
import toml
if __name__ == "__main__":
parser = argparse.ArgumentParser(prog="tunasync_snapshot_gc")
parser.add_argument("--max-level", type=int, default=1, help="max walk level to find garbage snapshots")
parser.add_argument("--pattern", default=r"^_gc_.+_\d+", help="pattern to match garbage snapshots")
parser.add_argument("-c", "--config", help="tunasync config file")
args = parser.parse_args()
pattern = re.compile(args.pattern)
def walk(_dir, level=1):
if level > args.max_level:
return
for fname in os.listdir(_dir):
abs_fname = os.path.join(_dir, fname)
if os.path.isdir(abs_fname):
if pattern.match(fname):
print("GC: {}".format(abs_fname))
try:
sh.btrfs("subvolume", "delete", abs_fname)
except sh.ErrorReturnCode, e:
print("Error: {}".format(e.stderr))
else:
walk(abs_fname, level+1)
with open(args.config) as f:
settings = toml.loads(f.read())
mirror_root = settings["global"]["mirror_root"]
gc_root = settings["btrfs"]["gc_root"].format(mirror_root=mirror_root)
walk(gc_root)
# vim: ts=4 sw=4 sts=4 expandtab