如果使用 WAL-G，删除旧的完整备份时旧的 wal 文件会发生什么？
if use WAL-G, What is happend with old wal files when delete old full backup?
我使用 WAL-G 备份 PostgreSQL。
但我不知道：删除旧的完整备份时旧的 wal 文件发生了什么。
我画了图
删除旧的完整备份时将删除旧的 WAL 文件
INFO: 2020/06/15 07:29:03.476029 will be deleted: wal_005/0000000E0000002A00000017.br
INFO: 2020/06/15 07:29:03.476037 will be deleted: wal_005/0000000E0000002A00000018.br
INFO: 2020/06/15 07:29:03.476045 will be deleted: wal_005/0000000E0000002A00000019.br
INFO: 2020/06/15 07:29:03.476055 will be deleted: wal_005/0000000E0000002A0000001A.br
INFO: 2020/06/15 07:29:03.476064 will be deleted: wal_005/0000000E0000002A0000001B.br
INFO: 2020/06/15 07:29:03.476071 will be deleted: wal_005/0000000E0000002A0000001C.br
INFO: 2020/06/15 07:29:03.476081 will be deleted: wal_005/0000000E0000002A0000001D.br
INFO: 2020/06/15 07:29:03.476089 will be deleted: wal_005/0000000E0000002A0000001E.br
INFO: 2020/06/15 07:29:03.476097 will be deleted: wal_005/0000000E0000002A0000001F.br
INFO: 2020/06/15 07:29:03.476105 will be deleted: wal_005/0000000E0000002A00000020.br
INFO: 2020/06/15 07:29:03.476113 will be deleted: wal_005/0000000E0000002A00000021.br
INFO: 2020/06/15 07:29:03.476121 will be deleted: wal_005/0000000E0000002A00000022.br
INFO: 2020/06/15 07:29:03.476131 will be deleted: wal_005/0000000E0000002A00000023.br
INFO: 2020/06/15 07:29:03.476138 will be deleted: wal_005/0000000E0000002A00000024.br
INFO: 2020/06/15 07:29:03.476146 will be deleted: wal_005/0000000E0000002A00000025.br
INFO: 2020/06/15 07:29:03.476154 will be deleted: wal_005/0000000E0000002A00000026.br
INFO: 2020/06/15 07:29:03.476164 will be deleted: wal_005/0000000E0000002A00000027.br
INFO: 2020/06/15 07:29:03.476172 will be deleted: wal_005/0000000E0000002A00000028.br
INFO: 2020/06/15 07:29:03.476180 will be deleted: wal_005/0000000E0000002A00000029.br
INFO: 2020/06/15 07:29:03.476190 will be deleted: wal_005/0000000E0000002A0000002A.br
INFO: 2020/06/15 07:29:03.476198 will be deleted: wal_005/0000000E0000002A0000002B.br
INFO: 2020/06/15 07:29:03.476205 will be deleted: wal_005/0000000E0000002A0000002C.br
INFO: 2020/06/15 07:29:03.476213 will be deleted: wal_005/0000000E0000002A0000002D.br
INFO: 2020/06/15 07:29:03.476221 will be deleted: wal_005/0000000E0000002A0000002E.br
INFO: 2020/06/15 07:29:03.476229 will be deleted: wal_005/0000000E0000002A0000002F.br
INFO: 2020/06/15 07:29:03.476238 will be deleted: wal_005/0000000E0000002A00000030.br
INFO: 2020/06/15 07:29:03.476246 will be deleted: wal_005/0000000E0000002A00000031.br
INFO: 2020/06/15 07:29:03.522402 will be deleted: basebackups_005/base_0000000C00000001000000D8/metadata.json
INFO: 2020/06/15 07:29:03.522421 will be deleted: basebackups_005/base_0000000C00000001000000DA_D_0000000C00000001000000D8/metadata.json
INFO: 2020/06/15 07:29:03.522437 will be deleted: basebackups_005/base_0000000C00000001000000DC_D_0000000C00000001000000DA/metadata.json
INFO: 2020/06/15 07:29:03.522448 will be deleted: basebackups_005/base_0000000C00000002000000A0_D_0000000C00000001000000DC/metadata.json
INFO: 2020/06/15 07:29:03.522457 will be deleted: basebackups_005/base_0000000C00000005000000D0_D_0000000C00000002000000A0/metadata.json
INFO: 2020/06/15 07:29:03.522468 will be deleted: basebackups_005/base_0000000C000000080000009B_D_0000000C00000005000000D0/metadata.json
INFO: 2020/06/15 07:29:03.522478 will be deleted: basebackups_005/base_0000000E0000000C00000085_D_0000000C000000080000009B/metadata.json
INFO: 2020/06/15 07:29:03.522488 will be deleted: basebackups_005/base_0000000E0000000F0000000D_D_0000000E0000000C00000085/metadata.json
INFO: 2020/06/15 07:29:03.522500 will be deleted: basebackups_005/base_0000000E0000001200000074/metadata.json
INFO: 2020/06/15 07:29:03.522510 will be deleted: basebackups_005/base_0000000E000000150000007B_D_0000000E0000001200000074/metadata.json
INFO: 2020/06/15 07:29:03.522520 will be deleted: basebackups_005/base_0000000E00000018000000BF_D_0000000E000000150000007B/metadata.json
INFO: 2020/06/15 07:29:03.522530 will be deleted: basebackups_005/base_0000000E0000001B00000089_D_0000000E00000018000000BF/metadata.json
INFO: 2020/06/15 07:29:03.522540 will be deleted: basebackups_005/base_0000000E0000001E00000003_D_0000000E0000001B00000089/metadata.json
INFO: 2020/06/15 07:29:03.476020 will be deleted: wal_005/0000000E0000002A00000016.br
INFO: 2020/06/15 07:29:03.476029 will be deleted: wal_005/0000000E0000002A00000017.br
INFO: 2020/06/15 07:29:03.476037 will be deleted: wal_005/0000000E0000002A00000018.br
INFO: 2020/06/15 07:29:03.476045 will be deleted: wal_005/0000000E0000002A00000019.br
INFO: 2020/06/15 07:29:03.476055 will be deleted: wal_005/0000000E0000002A0000001A.br
INFO: 2020/06/15 07:29:03.476064 will be deleted: wal_005/0000000E0000002A0000001B.br
INFO: 2020/06/15 07:29:03.476071 will be deleted: wal_005/0000000E0000002A0000001C.br
INFO: 2020/06/15 07:29:03.476081 will be deleted: wal_005/0000000E0000002A0000001D.br
INFO: 2020/06/15 07:29:03.476089 will be deleted: wal_005/0000000E0000002A0000001E.br
INFO: 2020/06/15 07:29:03.476097 will be deleted: wal_005/0000000E0000002A0000001F.br
INFO: 2020/06/15 07:29:03.476105 will be deleted: wal_005/0000000E0000002A00000020.br
INFO: 2020/06/15 07:29:03.476113 will be deleted: wal_005/0000000E0000002A00000021.br
INFO: 2020/06/15 07:29:03.476121 will be deleted: wal_005/0000000E0000002A00000022.br
INFO: 2020/06/15 07:29:03.476131 will be deleted: wal_005/0000000E0000002A00000023.br
INFO: 2020/06/15 07:29:03.476138 will be deleted: wal_005/0000000E0000002A00000024.br
INFO: 2020/06/15 07:29:03.476146 will be deleted: wal_005/0000000E0000002A00000025.br
INFO: 2020/06/15 07:29:03.476154 will be deleted: wal_005/0000000E0000002A00000026.br
INFO: 2020/06/15 07:29:03.476164 will be deleted: wal_005/0000000E0000002A00000027.br
INFO: 2020/06/15 07:29:03.476172 will be deleted: wal_005/0000000E0000002A00000028.br
INFO: 2020/06/15 07:29:03.476180 will be deleted: wal_005/0000000E0000002A00000029.br
INFO: 2020/06/15 07:29:03.476190 will be deleted: wal_005/0000000E0000002A0000002A.br
INFO: 2020/06/15 07:29:03.476198 will be deleted: wal_005/0000000E0000002A0000002B.br
INFO: 2020/06/15 07:29:03.476205 will be deleted: wal_005/0000000E0000002A0000002C.br
INFO: 2020/06/15 07:29:03.476213 will be deleted: wal_005/0000000E0000002A0000002D.br
INFO: 2020/06/15 07:29:03.476221 will be deleted: wal_005/0000000E0000002A0000002E.br
INFO: 2020/06/15 07:29:03.476229 will be deleted: wal_005/0000000E0000002A0000002F.br
INFO: 2020/06/15 07:29:03.476238 will be deleted: wal_005/0000000E0000002A00000030.br
INFO: 2020/06/15 07:29:03.476246 will be deleted: wal_005/0000000E0000002A00000031.br
INFO: 2020/06/15 07:29:03.522402 will be deleted: basebackups_005/base_0000000C00000001000000D8/metadata.json
INFO: 2020/06/15 07:29:03.522421 will be deleted: basebackups_005/base_0000000C00000001000000DA_D_0000000C00000001000000D8/metadata.json
INFO: 2020/06/15 07:29:03.522437 will be deleted: basebackups_005/base_0000000C00000001000000DC_D_0000000C00000001000000DA/metadata.json
INFO: 2020/06/15 07:29:03.522448 will be deleted: basebackups_005/base_0000000C00000002000000A0_D_0000000C00000001000000DC/metadata.json
INFO: 2020/06/15 07:29:03.522457 will be deleted: basebackups_005/base_0000000C00000005000000D0_D_0000000C00000002000000A0/metadata.json
INFO: 2020/06/15 07:29:03.522468 will be deleted: basebackups_005/base_0000000C000000080000009B_D_0000000C00000005000000D0/metadata.json
INFO: 2020/06/15 07:29:03.522478 will be deleted: basebackups_005/base_0000000E0000000C00000085_D_0000000C000000080000009B/metadata.json
INFO: 2020/06/15 07:29:03.522488 will be deleted: basebackups_005/base_0000000E0000000F0000000D_D_0000000E0000000C00000085/metadata.json
INFO: 2020/06/15 07:29:03.522500 will be deleted: basebackups_005/base_0000000E0000001200000074/metadata.json
INFO: 2020/06/15 07:29:03.522510 will be deleted: basebackups_005/base_0000000E000000150000007B_D_0000000E0000001200000074/metadata.json
INFO: 2020/06/15 07:29:03.522520 will be deleted: basebackups_005/base_0000000E00000018000000BF_D_0000000E000000150000007B/metadata.json
INFO: 2020/06/15 07:29:03.522530 will be deleted: basebackups_005/base_0000000E0000001B00000089_D_0000000E00000018000000BF/metadata.json
INFO: 2020/06/15 07:29:03.522540 will be deleted: basebackups_005/base_0000000E0000001E00000003_D_0000000E0000001B00000089/metadata.json
我使用 WAL-G 备份 PostgreSQL。
但我不知道：删除旧的完整备份时旧的 wal 文件发生了什么。
我画了图
删除旧的完整备份时将删除旧的 WAL 文件
INFO: 2020/06/15 07:29:03.476029 will be deleted: wal_005/0000000E0000002A00000017.br
INFO: 2020/06/15 07:29:03.476037 will be deleted: wal_005/0000000E0000002A00000018.br
INFO: 2020/06/15 07:29:03.476045 will be deleted: wal_005/0000000E0000002A00000019.br
INFO: 2020/06/15 07:29:03.476055 will be deleted: wal_005/0000000E0000002A0000001A.br
INFO: 2020/06/15 07:29:03.476064 will be deleted: wal_005/0000000E0000002A0000001B.br
INFO: 2020/06/15 07:29:03.476071 will be deleted: wal_005/0000000E0000002A0000001C.br
INFO: 2020/06/15 07:29:03.476081 will be deleted: wal_005/0000000E0000002A0000001D.br
INFO: 2020/06/15 07:29:03.476089 will be deleted: wal_005/0000000E0000002A0000001E.br
INFO: 2020/06/15 07:29:03.476097 will be deleted: wal_005/0000000E0000002A0000001F.br
INFO: 2020/06/15 07:29:03.476105 will be deleted: wal_005/0000000E0000002A00000020.br
INFO: 2020/06/15 07:29:03.476113 will be deleted: wal_005/0000000E0000002A00000021.br
INFO: 2020/06/15 07:29:03.476121 will be deleted: wal_005/0000000E0000002A00000022.br
INFO: 2020/06/15 07:29:03.476131 will be deleted: wal_005/0000000E0000002A00000023.br
INFO: 2020/06/15 07:29:03.476138 will be deleted: wal_005/0000000E0000002A00000024.br
INFO: 2020/06/15 07:29:03.476146 will be deleted: wal_005/0000000E0000002A00000025.br
INFO: 2020/06/15 07:29:03.476154 will be deleted: wal_005/0000000E0000002A00000026.br
INFO: 2020/06/15 07:29:03.476164 will be deleted: wal_005/0000000E0000002A00000027.br
INFO: 2020/06/15 07:29:03.476172 will be deleted: wal_005/0000000E0000002A00000028.br
INFO: 2020/06/15 07:29:03.476180 will be deleted: wal_005/0000000E0000002A00000029.br
INFO: 2020/06/15 07:29:03.476190 will be deleted: wal_005/0000000E0000002A0000002A.br
INFO: 2020/06/15 07:29:03.476198 will be deleted: wal_005/0000000E0000002A0000002B.br
INFO: 2020/06/15 07:29:03.476205 will be deleted: wal_005/0000000E0000002A0000002C.br
INFO: 2020/06/15 07:29:03.476213 will be deleted: wal_005/0000000E0000002A0000002D.br
INFO: 2020/06/15 07:29:03.476221 will be deleted: wal_005/0000000E0000002A0000002E.br
INFO: 2020/06/15 07:29:03.476229 will be deleted: wal_005/0000000E0000002A0000002F.br
INFO: 2020/06/15 07:29:03.476238 will be deleted: wal_005/0000000E0000002A00000030.br
INFO: 2020/06/15 07:29:03.476246 will be deleted: wal_005/0000000E0000002A00000031.br
INFO: 2020/06/15 07:29:03.522402 will be deleted: basebackups_005/base_0000000C00000001000000D8/metadata.json
INFO: 2020/06/15 07:29:03.522421 will be deleted: basebackups_005/base_0000000C00000001000000DA_D_0000000C00000001000000D8/metadata.json
INFO: 2020/06/15 07:29:03.522437 will be deleted: basebackups_005/base_0000000C00000001000000DC_D_0000000C00000001000000DA/metadata.json
INFO: 2020/06/15 07:29:03.522448 will be deleted: basebackups_005/base_0000000C00000002000000A0_D_0000000C00000001000000DC/metadata.json
INFO: 2020/06/15 07:29:03.522457 will be deleted: basebackups_005/base_0000000C00000005000000D0_D_0000000C00000002000000A0/metadata.json
INFO: 2020/06/15 07:29:03.522468 will be deleted: basebackups_005/base_0000000C000000080000009B_D_0000000C00000005000000D0/metadata.json
INFO: 2020/06/15 07:29:03.522478 will be deleted: basebackups_005/base_0000000E0000000C00000085_D_0000000C000000080000009B/metadata.json
INFO: 2020/06/15 07:29:03.522488 will be deleted: basebackups_005/base_0000000E0000000F0000000D_D_0000000E0000000C00000085/metadata.json
INFO: 2020/06/15 07:29:03.522500 will be deleted: basebackups_005/base_0000000E0000001200000074/metadata.json
INFO: 2020/06/15 07:29:03.522510 will be deleted: basebackups_005/base_0000000E000000150000007B_D_0000000E0000001200000074/metadata.json
INFO: 2020/06/15 07:29:03.522520 will be deleted: basebackups_005/base_0000000E00000018000000BF_D_0000000E000000150000007B/metadata.json
INFO: 2020/06/15 07:29:03.522530 will be deleted: basebackups_005/base_0000000E0000001B00000089_D_0000000E00000018000000BF/metadata.json
INFO: 2020/06/15 07:29:03.522540 will be deleted: basebackups_005/base_0000000E0000001E00000003_D_0000000E0000001B00000089/metadata.json
INFO: 2020/06/15 07:29:03.476020 will be deleted: wal_005/0000000E0000002A00000016.br
INFO: 2020/06/15 07:29:03.476029 will be deleted: wal_005/0000000E0000002A00000017.br
INFO: 2020/06/15 07:29:03.476037 will be deleted: wal_005/0000000E0000002A00000018.br
INFO: 2020/06/15 07:29:03.476045 will be deleted: wal_005/0000000E0000002A00000019.br
INFO: 2020/06/15 07:29:03.476055 will be deleted: wal_005/0000000E0000002A0000001A.br
INFO: 2020/06/15 07:29:03.476064 will be deleted: wal_005/0000000E0000002A0000001B.br
INFO: 2020/06/15 07:29:03.476071 will be deleted: wal_005/0000000E0000002A0000001C.br
INFO: 2020/06/15 07:29:03.476081 will be deleted: wal_005/0000000E0000002A0000001D.br
INFO: 2020/06/15 07:29:03.476089 will be deleted: wal_005/0000000E0000002A0000001E.br
INFO: 2020/06/15 07:29:03.476097 will be deleted: wal_005/0000000E0000002A0000001F.br
INFO: 2020/06/15 07:29:03.476105 will be deleted: wal_005/0000000E0000002A00000020.br
INFO: 2020/06/15 07:29:03.476113 will be deleted: wal_005/0000000E0000002A00000021.br
INFO: 2020/06/15 07:29:03.476121 will be deleted: wal_005/0000000E0000002A00000022.br
INFO: 2020/06/15 07:29:03.476131 will be deleted: wal_005/0000000E0000002A00000023.br
INFO: 2020/06/15 07:29:03.476138 will be deleted: wal_005/0000000E0000002A00000024.br
INFO: 2020/06/15 07:29:03.476146 will be deleted: wal_005/0000000E0000002A00000025.br
INFO: 2020/06/15 07:29:03.476154 will be deleted: wal_005/0000000E0000002A00000026.br
INFO: 2020/06/15 07:29:03.476164 will be deleted: wal_005/0000000E0000002A00000027.br
INFO: 2020/06/15 07:29:03.476172 will be deleted: wal_005/0000000E0000002A00000028.br
INFO: 2020/06/15 07:29:03.476180 will be deleted: wal_005/0000000E0000002A00000029.br
INFO: 2020/06/15 07:29:03.476190 will be deleted: wal_005/0000000E0000002A0000002A.br
INFO: 2020/06/15 07:29:03.476198 will be deleted: wal_005/0000000E0000002A0000002B.br
INFO: 2020/06/15 07:29:03.476205 will be deleted: wal_005/0000000E0000002A0000002C.br
INFO: 2020/06/15 07:29:03.476213 will be deleted: wal_005/0000000E0000002A0000002D.br
INFO: 2020/06/15 07:29:03.476221 will be deleted: wal_005/0000000E0000002A0000002E.br
INFO: 2020/06/15 07:29:03.476229 will be deleted: wal_005/0000000E0000002A0000002F.br
INFO: 2020/06/15 07:29:03.476238 will be deleted: wal_005/0000000E0000002A00000030.br
INFO: 2020/06/15 07:29:03.476246 will be deleted: wal_005/0000000E0000002A00000031.br
INFO: 2020/06/15 07:29:03.522402 will be deleted: basebackups_005/base_0000000C00000001000000D8/metadata.json
INFO: 2020/06/15 07:29:03.522421 will be deleted: basebackups_005/base_0000000C00000001000000DA_D_0000000C00000001000000D8/metadata.json
INFO: 2020/06/15 07:29:03.522437 will be deleted: basebackups_005/base_0000000C00000001000000DC_D_0000000C00000001000000DA/metadata.json
INFO: 2020/06/15 07:29:03.522448 will be deleted: basebackups_005/base_0000000C00000002000000A0_D_0000000C00000001000000DC/metadata.json
INFO: 2020/06/15 07:29:03.522457 will be deleted: basebackups_005/base_0000000C00000005000000D0_D_0000000C00000002000000A0/metadata.json
INFO: 2020/06/15 07:29:03.522468 will be deleted: basebackups_005/base_0000000C000000080000009B_D_0000000C00000005000000D0/metadata.json
INFO: 2020/06/15 07:29:03.522478 will be deleted: basebackups_005/base_0000000E0000000C00000085_D_0000000C000000080000009B/metadata.json
INFO: 2020/06/15 07:29:03.522488 will be deleted: basebackups_005/base_0000000E0000000F0000000D_D_0000000E0000000C00000085/metadata.json
INFO: 2020/06/15 07:29:03.522500 will be deleted: basebackups_005/base_0000000E0000001200000074/metadata.json
INFO: 2020/06/15 07:29:03.522510 will be deleted: basebackups_005/base_0000000E000000150000007B_D_0000000E0000001200000074/metadata.json
INFO: 2020/06/15 07:29:03.522520 will be deleted: basebackups_005/base_0000000E00000018000000BF_D_0000000E000000150000007B/metadata.json
INFO: 2020/06/15 07:29:03.522530 will be deleted: basebackups_005/base_0000000E0000001B00000089_D_0000000E00000018000000BF/metadata.json
INFO: 2020/06/15 07:29:03.522540 will be deleted: basebackups_005/base_0000000E0000001E00000003_D_0000000E0000001B00000089/metadata.json