Avamar:Data Domain 集成:复制报告“Out of streams”(流外)错误
Summary: 在与 Data Domain 集成的 Avamar 环境中,复制正在完成,但由于出现“Out of streams”(流外)错误而出现异常。
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Symptoms
在与 Data Domain (DD) 集成的 Avamar 环境中,复制部分完成,但日志中显示以下异常:
2019-07-01 17:02:14 avtar Info <41435>: - Data Domain configured in Stand-Alone mode.
2019-07-01 17:02:14 avtar Info <40206>: Setting default storage unit to 'avamar-1315232775' for handle 2
2019-07-01 17:02:14 avtar Info <41440>: Data Domain handle:2 capabilities:0x0020021B
2019-07-01 17:02:14 avtar Info <10609>: Data Domain Destination login to ddxxxx.net complete
2019-07-01 17:02:15 avtar Info <42385>: id:1 Range-Replication selected because it is supported since DDOS 6.0 (container.1.cdsf)
2019-07-01 17:02:15 avtar Info <40160>: - Establishing a connection to the Data Domain system with basic authentication (Connection mode: A:0 E:0).
..
2019-07-01 17:02:18 avtar Info <40160>: - Establishing a connection to the Data Domain system with basic authentication (Connection mode: A:0 E:0).
2019-07-01 17:02:21 avtar Error <0000>: Replication failed - id: 3, unexpected exception caught: ddr_replthread:3:replicateSlice: ddp_filecopy_status failed
[179027] [140372932351744] Mon Jul 1 17:02:21 2019
ddp_filecopy_status() failed, start_offset[0], length[20971520], Err: 5539-filecopy operation failed (nfs: Out of Streams)
[179027] [140372932351744] Mon Jul 1 17:02:19 2019
ddp_filecopy_stop() failed, Err: 5004-nfs filecopy stop failed (nfs: No such file or directory)
...
[179027] [140372992386816] Mon Jul 1 17:02:15 2019
ddp_access() failed, Path avamar-1437556709/STAGING/09a1003e41e2a0d9e3333cf9fbb3345e0b665a0e/BACKUP-01974498BF0587FFD2EC4A97BD201139F29D9516-1D52F902DDF23FC, mode 0 Err: 5004-nfs lookup failed (nfs: No such file or directory)
[179027] [140372992386816] Mon Jul 1 17:02:14 2019
ddp_access() failed, Path avamar-1315232775/STAGING/09a1003e41e2a0d9e3333cf9fbb3345e0b665a0e/BACKUP-01974498BF0587FFD2EC4A97BD201139F29D9516-1D52F902DDF23FC, mode 0 Err: 5004-nfs lookup failed (nfs: No such file or directory)
..
2019-07-01 17:02:29 avtar Info <40176>: - Multi-stream restore summary (current 0, max active 0, max cloned 0, total cloned 0, ddr handle 2):
2019-07-01 17:02:29 avtar FATAL <0000>: Replication failed
2019-07-01 17:02:29 avtar FATAL <40009>: DDR encountered errors.
2019-07-01 17:02:29 avtar Info <9772>: Starting graceful (staged) termination, DDR_ERROR event received (fatal severity) (wrap-up stage)
2019-07-01 17:02:29 avtar Info <0000>: Entering the 'final' phase of termination, DDR_ERROR need to exit)
2019-07-01 17:02:29 avtar Info <40176>: - Multi-stream restore summary (current 0, max active 0, max cloned 0, total cloned 0, ddr handle 2):
2019/07/01-14:02:29.25907 [avtar] INTERNAL ERROR: <0001> assert error (result == MSG_ERR_NONE), /local/jenkins/workspace/server_rollup_hotfix_SLES11-64/src/avtar/ade/adelib/interfaceade.cpp line 396
2019-07-01 17:02:29 avtar Info <5675>: Replicated 0 of 78 backups (0 errors) for client "ddxxxx.net"
2019-07-01 17:02:29 avtar Error <6655>: Replicate interrupted.
2019-07-01 17:02:29 avtar Info <7925>: Restored 940.4 KB from selection(s) with 6.000 GB in 1 files
2019-07-01 17:02:29 avtar Info <6090>: Restored 940.4 KB in 0.34 minutes: 159.9 MB/hour (174 files/hour)
Avamar 和源 Data Domain 以及源和目标 Data Domain 之间的连接已经过验证(在端口 111、2049、2051、2052 上使用 ping、ssh 和 telnet(或 curl))。
Cause
单个复制组包含多个 (4+) 个客户端。
在复制组中,“max-concurrent-processes”设置为 4,从而同时复制四个客户端。
这导致源和目标 Data Domain 之间的流数量多于可用流数量。
Resolution
1.应通过在相应的 Data Domain 上运行以下命令,检查 Data Domain 源和目标上的最大流计数:
ddboost@dd# ddboost streams show active
--------- Active Streams -------- --------- Soft Limits -------- - Hard Limit -
Name Read Write Repl-out Repl-in Read Write Repl Combined Combined
----------------- ---- ----- -------- ------- ---- ----- ---- -------- --------------
avamar-xxxxx 0 0 0 0 - - - - -
----------------- ---- ----- -------- ------- ---- ----- ---- -------- --------------
DD System Stream Limits: read=6 write=35 repl-in=20 repl-out=18 combined=30
2.将允许的最大计数与实际流活动进行比较,如 repl-in 或 repl-out 分别位于目标和源 DD 上。
知识库文章 Data Domain:DDOS 6.0 支持的流计数还包含每个型号支持的流计数列表。本文还包含指向早期 DDOS 版本 4.0 至 5.7 的链接。
3.查看 max-concurrent-processes 和 Maximum number of Data Domain Replication Streams。
4.相应调整以适应源和目标 Data Domain 之间的可用流计数:
-
如果按字母顺序复制客户端:
- 四个客户端将同时复制,创建 24 个流(默认情况下,每个客户端 6 个流)
- 可以使用自由格式标记来更改默认值”
[avtar]ddr-repl-max-parallel-streams“,且在 UI 中值为 1-29。
-
如果并行复制客户端(基于池的复制),则还有一项额外的设置“Data Domain 复制流的最大数量”来控制每个客户端的流数量。
作为资源利用和管理的最佳做法,请确保将客户端划分为多个复制组。
Additional Information
查看复制日志时:
-
“
max-streams“等效于 UI 中的”最大并发进程数”。 -
“
max-ddr-streams“相当于 UI 中的”最大 Data Domain 复制流数”。
Affected Products
Avamar, Avamar ServerArticle Properties
Article Number: 000044317
Article Type: Solution
Last Modified: 30 Sept 2025
Version: 5
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