Another shadow copy creation is already in progress

[dcampregher]

Hello,

What is the root cause of this error when backing up the Hyper-VM virtual machines ? There are 52 VM into the JOB and it are hosted on 03 hosts and 09 volumes.

:: Failed to create snapshot (Microsoft CSV Shadow Copy Provider) (mode: Crash consistent) Details: Failed to create VSS snapshot set.
Another shadow copy creation is already in progress. Wait a few moments and try again.
--tr:Failed to perform pre-backup tasks.

:: Retrying snapshot creation attempt (Failed to create VSS snapshot set.
Another shadow copy creation is already in progress. Wait a few moments and try again.
--tr:Failed to perform pre-backup tasks.)

:: Task has been rescheduled

[Mike Resseler]

Hi Diogo,

Mostly this means that either

a) A backup is still running somewhere and you can't take 2 shadow copy's at the same time
b) A previous backup has failed and there is something not cleaned up

Do you know what VM it is? Is it multiple? Is it a different one each time you backup?

thanks

[dcampregher]

You are correct. The Microsoft DPM was enabled in the environment, after disable it the warning doesn't appear anymore.

[Mike Resseler]

Good to hear it is fixed! Thanks Diogo for letting us know

[leo.white]

I am using the off host proxy method to try and pull snapshots off my nimble array for my backups. My issue is about half the VMs in my jobs fail to use the hardware VSS provider and fall back to the Microsoft VSS writer. Which always shows the job in a warning state. I have 21 vms in this specific job and the majority of them are on my nimble array. Is there anyway to have wait to retry the hardware provider?

Code: Select all

6/30/2017 4:58:16 PM :: Failed to create snapshot Nimble Storage VSS Provider on Hyper-V Off-Host Backup Proxy (mode: Crash consistent) Details: Failed to prepare for backup
Another shadow copy creation is already in progress. Wait a few moments and try again.
--tr:Failed to create VSS snapshot.
--tr:Failed to perform pre-backup tasks.  

Code: Select all

6/30/2017 4:58:28 PM :: Retrying snapshot creation attempt (Failed to prepare for backup
Another shadow copy creation is already in progress. Wait a few moments and try again.
--tr:Failed to create VSS snapshot.
--tr:Failed to perform pre-backup tasks.)  

Enviroment:
2012R2 Clustered servers
Nimble 5000 all flash array
10gbe networking

[PTide]

Hi Leo,

Please see Mike's response and check if anything from the list applies. If not then please open a support case and post your case ID.

Thank you

[mmckinnon]

Case [ID# 03765634]

We have been evaluating Veeam using Veeam Backup & Replication Community Edition and everything has been working well but we are now getting the following errors.

* Failed to create snapshot (Microsoft CSV Shadow Copy Provider) (mode: Crash consistent) Details: Failed to create VSS snapshot set. Another shadow copy creation is already in progress. Wait a few moments and try again.

* Failed to create change tracking time stamp for virtual disk file X:\FILE.VHDX

We have one backup job containing three VMs.

Can you please assist is resolving this error.

Thanks
Matthew

[wishr]

Hi Matthew,

I'm merging your post with an existing one. Please, take a look. Also, that article might help.

Thanks