AhsayCBS (DIY)AhsayOBM File backup fails: Shadow Copy snapshot missing
Product Version
Operating System
Symptom
When perform a file backup up on AhsayOBM/AhsayACB v7 the job ends with "Snapshot for Shadow Copy Set is missing, backup terminate." error.
| No. | Type | Timestamp | Log |
| * | ... | ... | ... |
| * | erro | YYYY/MM/DD hh:mm:ss | Snapshot for Shadow Copy Set is missing, backup terminate. |
| * | info | ... | ... |
Cause
The error message is returned by the Microsoft Windows Volume Shadow Copy Service (VSS).
To support backups of volume mount points on Windows file backup sets on AhsayOBM/AhsayACB v7, if "Volume Shadow Copy" option is enabled , AhsayOBM/AhsayACB v7 will initiate a VSS snapshot of all local drives found on the machine regardless if the drive has been selected in the backup source.
This behavior different from AhsayOBM/AhsayACB v6 which only initiates a VSS snaphot of a local drive selected in the backup source.
Resolution
If the client machines are not configured with volume mount points and there are persistent "[Shadow Copy] Snapshot for Shadow Copy Set is missing, backup terminate." backup errors.
As a workaround you could consider reverting the current AhsayOBM/AhsayACB v7 VSS snapshot behaviour back v6, this can be done by:
Editing the %OBC_INSTALLL_PATH%\ cb.opt file
Example:
# Set option to true for disabling adding all volumes to shadow copy set com.ahsay.obx.core.backup.file.ShadowCopy.disableAddAllVolumes=true- Restart AhsayOBM/AhsayACB scheduler service.