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Volume shadow copies on SQL transaction log volume causing SQL Server go offline

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Applies to

SnapCenter Plugin for SQL (SCSQL)

Issue

  • Extensive use of the SQL VSS Agent during backups.
  • Volume shadow copies on SQL transaction log volume filled the volume causing the volume to go offline, SQL Server crash, and the 'SqlServerWriter' to be left in a failed state.
C:\WINDOWS\system32\vssadmin list writers
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2013 Microsoft Corp.
 
Writer name: 'SqlServerWriter'
   Writer Id: {a65faa63-5ea8-4ebc-9dbd-a0c4db26912a}
   Writer Instance Id: {2a0ccc8e-b187-4a5b-9778-4dd105f76d76}
   State: [10] Failed
   Last error: Timed out
  • Volume shadow copies on the impacted drives could not be deleted due to error:
C:\WINDOWS\system32\vssadmin delete shadows /for=i:
vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool
(C) Copyright 2001-2013 Microsoft Corp.
 
Error: Snapshots were found, but they were outside of your allowed context.
Try removing them with the backup application which created them.

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