验证酒保在失败后备份文件

Question

我有一个酒保，可以从另一台服务器上安装一个postgres备份。它的配置是：

    active: True
    archive_mode: on
    archived_count: 47588
    archiver: True
    archiver_batch_size: 0
    backup_method: rsync
    backup_options: BackupOptions(['exclusive_backup'])
    bandwidth_limit: None
    check_timeout: 30
    compression: gzip
    custom_compression_filter: None
    custom_decompression_filter: None
    disabled: False
    failed_count: 0
    immediate_checkpoint: True
    is_archiving: True
    is_superuser: True
    last_archived_time: 2018-11-17 14:49:58.810545+03:30
    last_archived_wal: 0000000100002ACC0000003B
    last_backup_maximum_age: 7 days (latest backup: 6 hours, 3 minutes, 11 seconds )
    last_failed_time: None
    last_failed_wal: None
    max_incoming_wals_queue: None
    minimum_redundancy: 1
    msg_list: []
    network_compression: True
    parallel_jobs: 15
    path_prefix: None
    pgespresso_installed: False
    post_archive_retry_script: None
    post_archive_script: None
    post_backup_retry_script: None
    post_backup_script: None
    pre_archive_retry_script: None
    pre_archive_script: None
    pre_backup_retry_script: None
    pre_backup_script: None
    recovery_options: RecoveryOptions([])
    replication_slot: None
    replication_slot_support: True
    retention_policy: REDUNDANCY 2
    retention_policy_mode: auto
    reuse_backup: None
...

大约几天前，我们在postgres上遇到了一些问题，酒保也没能支持我们。现在，当我列出备份日志时，我会看到以下内容：

20181117T011505 - Sat Nov 17 08:46:53 2018 - Size: 2.2 TiB - WAL Size: 9.8 GiB (tablespaces: ...)
20181116T011506 - Fri Nov 16 08:48:28 2018 - Size: 2.2 TiB - WAL Size: 38.3 GiB (tablespaces: ...)
20181114T011504 - FAILED

我检查了postgres表空间，它的大小正好是2.2TB。现在的问题是：

• 备份正确吗？
• 我是不是因为停机而丢失了数据？

Answer 1

使用标准的barman命令：barman status、barman show-backup和barman check-backup。见文档。