ECS：无法将剪辑从 Centera 迁移到 ECS - ERROR_RETENTION_INCORRECT

使用“ERROR_RETENTION_INCORRECT”的片段无法从 Centera 迁移到 ECS。

堆栈跟踪示例：

169.254.1.8 2019-11-21T19:30:53,212 [1215100270,sdk,ECSSYNCKDC01/3594002/WRITE_CLIP,-531c636:16e89995c11:-7a82,1] ERROR  AbstractTransaction.java (line 136) Failed to execute the transaction, aborting.
TransactionFailureException: com.emc.vipr.cashead.api.ObjectRetentionIncorrect: Failed to execute operation, error is ERROR_RETENTION_INCORRECT, object name is null
        at com.emc.vipr.cashead.storageserver.access.transaction.write.ObjectWriterImpl.finish(ObjectWriterImpl.java:80)
        at com.emc.vipr.cashead.storageserver.access.transaction.write.AwaitEOF.finish(AwaitEOF.java:173)
        at com.emc.vipr.cashead.storageserver.access.transaction.write.AwaitEOF.put(AwaitEOF.java:111)
        at com.emc.vipr.cashead.storageserver.access.msg.RichLastSegmentMessage.execute(RichLastSegmentMessage.java:61)
        at com.emc.vipr.cashead.storageserver.access.encoding.hpp.HPPResponder$EnqueableTransactionObject.execute(HPPResponder.java:311)
        at com.emc.vipr.cashead.storageserver.access.transaction.AccessTransaction.executeMessage(AccessTransaction.java:57)
        at com.emc.vipr.cashead.storageserver.access.transaction.AbstractTransaction.schedule(AbstractTransaction.java:131)
        at com.emc.vipr.cashead.storageserver.access.transaction.NullScheduler.registerSchedulable(NullScheduler.java:48)
        at com.emc.vipr.cashead.storageserver.access.transaction.AbstractTransaction.putGeneralMessage(AbstractTransaction.java:92)
        at com.emc.vipr.cashead.storageserver.access.transaction.AccessTransaction.put(AccessTransaction.java:61)
        at com.emc.vipr.cashead.storageserver.access.encoding.hpp.HPPResponder.processTransactionObject(HPPResponder.java:276)
        at com.emc.vipr.cashead.storageserver.access.encoding.hpp.HPPResponder.processPacket(HPPResponder.java:290)
        at com.emc.vipr.cashead.storageserver.access.encoding.hpp.HPPResponder.process(HPPResponder.java:181)
        at com.emc.vipr.cashead.storageserver.access.AccessNetworkServer.HandleConnection(AccessNetworkServer.java:51)
        at com.emc.vipr.cashead.hppserver.HPPServer.HandleConnection(HPPServer.java:84)
        at com.emc.vipr.cashead.net.NetworkServerWorker.Work(NetworkServerWorker.java:61)
        at com.emc.vipr.cashead.worker.Worker.call(Worker.java:227)
        at com.emc.vipr.cashead.worker.WorkerSchedulerThread.run(WorkerSchedulerThread.java:137)
Caused by: java.io.IOException: com.emc.vipr.cashead.api.ObjectRetentionIncorrect: Failed to execute operation, error is ERROR_RETENTION_INCORRECT, object name is null
        at com.emc.vipr.cashead.impl.vipr.ViPRObjectWriteHandler.checkResult(ViPRObjectWriteHandler.java:73)
        at com.emc.vipr.cashead.storageserver.access.transaction.write.ObjectWriterImpl.finish(ObjectWriterImpl.java:77)
        ... 17 more
Caused by: com.emc.vipr.cashead.api.ObjectRetentionIncorrect: Failed to execute operation, error is ERROR_RETENTION_INCORRECT, object name is null
        at com.emc.vipr.cashead.impl.vipr.ExceptionTranslator.translateError(ExceptionTranslator.java:38)
        at com.emc.vipr.cashead.impl.vipr.ExceptionTranslator.checkError(ExceptionTranslator.java:21)
        at com.emc.vipr.cashead.impl.vipr.ViPRObjectWriteHandler.checkResult(ViPRObjectWriteHandler.java:71)
        ... 18 more

情景 1：
如果对象的保留期超出存储区上指定的边界，则尝试写入对象会失败。

使用保留策略时，为Minimum Fixed Retention Period选择Infinite意味着所有对象上的所有保留值都必须是无限的。
为最长固定保留期选择无限意味着没有最大限制。

最短/最长保留约束将应用于写入存储桶的任何 C-Clip。如果 Clip 由任何基于 SDK 的第三方工具进行迁移，则保留期应该在一定范围内，否则会出错。

情景 2：
在 Centera 上定义了保留类策略。您可以通过要求客户从 Centera 为您提供以下命令来验证这一点：

Config# show retention all

情景 1：
例如，如果您的 CAS 片段上设置了保留期为 7 年，则必须创建具有以下保留值的存储区：

Bucket Retention Period: 0 seconds
Minimum Fixed Retention Period: 0 seconds
Maximum Fixed Retention Period: 8 years
Minimum Variable Retention Period: 0 seconds
Maximum Variable Retention Period: 0 seconds

这样，保留期就在最小/最大限制范围内。

情景 2：
要求客户为您提供以下保留类策略。

1. 启动 Centera 的 CLI。

2. 以具有合规性或监视角色的用户身份进行连接。

3. 键入命令： show retention all

   输出类似于：

   Retention class name Period
   ------------------------------------------
   class 1       5 years
   class 2         3 months
   class 3         10 years

然后，您必须将所有这些保留类策略添加到 ECS 端的命名空间保留策略。要求客户/PS 在 ECS 端添加命名空间保留策略后再次尝试迁移。