KB4563007 - FIX: VDI backup fails with error after applying SQL Server 2019 CU2/CU3/CU4

Applies to: SQL Server 2019 on Linux

Symptoms


After applying SQL Server 2019 Cumulative Update (CU) CU2/CU3/CU4, when you to try to back up database by using VDI on SQL Server on Linux, you may notice that backup fails with the following error message: 
Opening the device.
VDS::OpenDevice fails: x80770004
Msg 18210, Level 16, State 1, Server <ServerName>, Line LineNumber
BackupVirtualDeviceSet::AllocateBuffer:  failure on backup device '6effc98c-5db7-470f-a5f9-468c6ce0736b'. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).
Msg 3013, Level 16, State 1, Server <ServerName>, Line LineNumber
BACKUP DATABASE is terminating abnormally.

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.