Телеграмм чат группы OpsMgr страница 690

One frequently asked question is, why shouldn’t we enable dedup on DPM storage volumes (replica and shadow copy volumes). This needs understanding of how DPM stores its backup data. DPM has replica volume which reflects latest and greatest snapshot of the production server. As part of IR, Replica Volume will reflect the production server and a snapshot is created. At the time of next backup, DPM copies the new content onto replica volume which will cause a Copy On Write (COW) onto shadow copy volume as VolSnap is keeping the old snapshot intact. After backup completes, DPM creates a snapshot on Replica volume. VolSnap will do COW for any subsequent changes to this “snapshotted” volume. So, when dedup engine try to deduplicate the content, all writes on Replica Volume will lead to COW and so bloats up diff area. So, actual DPM storage consumption will go up due to this diff area increase. Another issue is that DPM’s CC logic will not work as the files on DPM side and on production side are mismatching. This makes CC think that backups are not proper and transfer all content again. So, dedup should not be enabled on DPM storage volumes.

Стремно включать тогда)

источник

17:08пожаловаться #10

АП

Алексей Попов in SCOM + SCorch + DPM

Алексей Попов

Коллеги, привет.
После перезагрузки одного management-сервера (из трёх) management-группа упала, в логи кидает несколько ивентов (указаны ниже), консоль не подключается, SDK-сервис падает через минуту. Если запустить SDK-сервис от имени другого администратора (не того SDK-акка, под которым вчера всё работало) - SDK-сервис стартует и работает, консоль подключается, но ивенты в логах продолжают появляться. Есть ли у кого идеи, куда копнуть?
Понятно, что какие-то проблемы с авторизацией, но никаких изменений со старым sdk-акком не зафиксировано.

-EventID: 26340
System Center Data Access Service and/or System Center Management is unresponsive because Authorization Manager is unable to recover from database errors. Please restart services System Center Data Access Service and System Center Management.

-EventID: 26380
The System Center Data Access service failed due to an unhandled exception.
The service will attempt to restart.
Exception:

Microsoft.EnterpriseManagement.Common.SdkServiceNotInitializedException: The Data Access service has not yet initialized. Please try again.
at Microsoft.EnterpriseManagement.ServiceDataLayer.DispatcherService.get_Container()
at Microsoft.EnterpriseManagement.Mom.Sdk.Service.SdkSubService.SdkChannel.Start()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
at System.Threading.ThreadPoolWorkQueue.Dispatch()

-EventID: 29111
OpsMgr Management Configuration Service failed to stop due to the following exception

System.ServiceProcess.TimeoutException: Failed to perform operation. Timeout provided has expired
at Microsoft.EnterpriseManagement.ManagementConfiguration.Service.LongRunningOperationManager.ExecuteOperation(ServiceBase service, LongRunningOperationCallback callback)
at Microsoft.EnterpriseManagement.ManagementConfiguration.Service.ConfigService.StopConfigServiceEngine()
at Microsoft.EnterpriseManagement.ManagementConfiguration.Service.ConfigService.OnStop()

Пофиксили следующим образом:
удалить аккаунт SDK из SQL, остановить на всех management-серверах SCOM сервисы Data Access, Management Configuration и Microsoft Monitoring Agent, удаляем папку "Health Service State", добавляем SDK-акк в SQL и выдаём нужные права, запускаем сервисы.
Права в SQL на SDK-акк были, однако, не срабатывали. Почему - не ясно, т.к. никто изменений в правах не делал.

источник

17:40пожаловаться #11

Anton Masyan in SCOM + SCorch + DPM

https://www.stefanroth.net/2018/10/12/azure-monitor-combine-azure-monitor-and-azure-log-analytics-data-in-grafana/

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