57 lines
2.3 KiB
Python
57 lines
2.3 KiB
Python
#!/usr/bin/env python3
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import argparse
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import os
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import subprocess
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def get_service_dataset_paths(data_root):
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return { d: os.path.join(data_root, d) for d in os.listdir(data_root) }
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def get_last_daily_snapshot_name(dataset_path):
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dataset = ''.join(["rpool", dataset_path])
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snapshots = subprocess.getoutput(
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f"zfs list -t snapshot -H -r {dataset} -o name -s creation"
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)
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daily_snapshots = filter(lambda s: s.endswith("_daily"), snapshots.split('\n'))
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return list(daily_snapshots)[-1]
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description="Backup service data using restic")
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parser.add_argument("--data-root", type=str, required=True,
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help="Service data root")
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parser.add_argument("--bucket-endpoint", type=str, required=True,
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help="S3 bucket endpoint")
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args = parser.parse_args()
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snapshots_for_backup = {
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service: {
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"dataset_path": service_dataset_path,
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"snapshot": get_last_daily_snapshot_name(service_dataset_path),
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} for service, service_dataset_path in get_service_dataset_paths(args.data_root).items()
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}
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for service, info in snapshots_for_backup.items():
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backup_path = os.path.normpath(
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os.path.join("/", "mnt", os.path.relpath(info["dataset_path"], "/"))
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)
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snapshot = info["snapshot"]
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restic_cmd_base = "restic " \
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f"--repo s3:https://{args.bucket_endpoint}/the-nine-worlds---{service} " \
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"--option s3.storage-class=ONEZONE_IA"
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print(f"Backing up {service} : {snapshot}")
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subprocess.run(f"zfs clone -o mountpoint={backup_path} {snapshot} rpool/restic",
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shell=True, check=True)
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try:
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subprocess.run(f"{restic_cmd_base} snapshots || {restic_cmd_base} init",
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shell=True, check=True)
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subprocess.run(f"{restic_cmd_base} backup .", shell=True, cwd=backup_path, check=True)
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subprocess.run(f"{restic_cmd_base} forget --prune --keep-daily 90 --keep-monthly 12",
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shell=True, check=True)
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subprocess.run(f"{restic_cmd_base} check", shell=True, check=True)
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finally:
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subprocess.run("zfs destroy rpool/restic", shell=True, check=True)
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