Backup fails with VSS snapshot error

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Backup fails with VSS snapshot error

Veeam Logoby cdcirexx » Tue Jul 12, 2016 4:55 pm

Hi all, I'm suddenly getting this error after a few days of good backups, I did search the forum and not sure if the results are related to mine as I don't have a cluster and needs to have app aware processing enabled for exchange, also I'm not running out of space on any of the vm partitions and on the back up location, here's the error, thanks in advanced -
Code: Select all
Failed to create snapshot (Microsoft Software Shadow Copy provider 1.0) (mode: Veeam application-aware processing) Details: Unknown status of async operation The shadow copy provider had an error. Check the System and Application event logs for more information. --tr:Failed to create VSS snapshot. --tr:Failed to perform pre-backup tasks.
Retrying snapshot creation attempt (Unknown status of async operation The shadow copy provider had an error. Check the System and Application event logs for more information. --tr:Failed to create VSS snapshot. --tr:Failed to perform pre-backup tasks.)
Task has been rescheduled
Queued for processing at 7/11/2016 6:34:40 PM
Unable to allocate processing resources. Error: Unknown status of async operation The shadow copy provider had an error. Check the System and Application event logs for more information. --tr:Failed to create VSS snapshot. --tr:Failed to perform pre-backup tasks.
cdcirexx
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Re: Backup fails with VSS snapshot error

Veeam Logoby Vitaliy S. » Tue Jul 12, 2016 5:03 pm

Please include your support case ID according to the forum rules provided when you click New Topic, otherwise the topic will get deleted during the periodic cleanup.
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Re: Backup fails with VSS snapshot error

Veeam Logoby cdcirexx » Tue Jul 12, 2016 5:58 pm 1 person likes this post

Here's my case id - #01851012
thanks
carlo
cdcirexx
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Re: Backup fails with VSS snapshot error

Veeam Logoby DaveWatkins » Tue Jul 12, 2016 10:09 pm 1 person likes this post

Did you

"Check the System and Application event logs for more information."

of the affected VM? It'll likely point to the reason
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Re: Backup fails with VSS snapshot error

Veeam Logoby cdcirexx » Thu Jul 14, 2016 4:24 pm

Thanks for the reply, I'm working with support and they looked at all my logs, they think it's on MS's side, after some searching here, I found this, looks like MS hyper-v and VSS has issues with B&R - microsoft-hyper-v-f25/why-do-hyper-v-vms-have-so-many-snapshot-issues-t30920.html
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