FIX: Azure storage I/O subsystem may not reset transfer details for a failed I/O resulting in backup errors

Dotyczy: SQL Server 2016 Service Pack 2SQL Server 2016 DeveloperSQL Server 2016 Enterprise

Symptoms


Azure storage I/O subsystem, on some rare occasions, may notreset the number of bytes transferred for a failed I/O. This results in backupengine making an incorrect assumption of the number of bytes that weresuccessfully written to the storage which causes subsequent backup errors. It is more likely to encounter these errors if the I/Os to Azure Storage are throttled consistently.

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. 

Resolution


This issue is fixed in the following cumulative update for SQL Server:

About cumulative updates for SQL Server:

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:

References


Learn about the terminology that Microsoft uses to describe software updates.