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How to diagnose VSS Writers before backup

Before modifying VSS, you must identify precisely which of the following year, and which service or application it belongs to, is not.

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Backup / Windows. Intermediate. 10 min

Before modifying VSS, you must identify precisely which of the following year, and which service or application it belongs to, is not.

Avant de commencer : adaptez toujours les commandes et manipulations à votre environnement. Sur un système de production, prévoyez une backup ou un retour arrière lorsque l’action peut modifier la configuration.

Étapes à suivre

  1. 1

    List the writers

    Run vssadminlist109 immediately after the job failure.

  2. 2

    Remove the status.

    Note the name of the writer, state and last error.

  3. 3

    Identify the application

    Associate the 1998/99 with the corresponding service or product.

  4. 4

    View events

    Search for VSS, FlightS & L, app at the same time.

  5. 5

    Retester proper.

    After targeted correction, restart a test backup.

Commands utiles

Csadminlist1909.
vssadminlist,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,
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À retenir

  • Do not reregister all the default DLL VSS.
  • A reboot can reset a writer to zero without correcting the cause.
  • Databases and transactional applications have their own1909.
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Technical deep dive

VSS: read Writer, Provider and Shadow Storage together

Technical checkpoints

  • A Writer should be Stable and error-free for an application-consistent backup to use VSS.
  • Events 8193/12289 often point to permissions, providers, COM or snapshot issues; context and error code matter more than the event number alone.
  • vssadmin list shadowstorage checks used/max shadow storage; insufficient space can delete or fail snapshots.

VSS triage

Read Writers, Providers and ShadowStorage before restarting services.

vssadmin list writers
vssadmin list providers
vssadmin list shadowstorage

Topic-specific pitfalls

  • Restarting all VSS services can make writers Stable while hiding the responsible application.
  • Deleting snapshots without checking backup policy can remove useful restore points.

How to validate

  • All required Writers are Stable/No error immediately before backup.
  • A test backup or snapshot completes and correlated VSS events do not recur.
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