Cannot do HvPrepareSnapshot - backup not happening

[spgsit5upport]

Hyper-V 2012 R2 setup

Veeam 7.0.0.771 installed on VM Server 2012 R2 Std

Cluster Hyper-V with CSV (dedicated iSCSI SAN)

Backup repository - Windows Server on LAN with lots of disk space

Create simple backup job, which never happens.

In the log I see:

VM host 'SP-SR1-VHOST02' is locked by creation of another snapshot by task 'e67c5401-e811-4237-be1e-b5b5d99f35f2'
[12.01.2014 21:14:41] <10> Info [RTS] [Task '7a7470ab-a128-4332-b251-1d613d83be61'] Unable to allocate on-host proxy : One or more volumes is locked by creation of another snapshot (by task: e67c5401-e811-4237-be1e-b5b5d99f35f2)

Stopping the job takes over 5 hours

Reports gives:

Unable to subscribe to guest processing components: Cannot do HvPrepareSnapshot. Error: Thread was being aborted.
Unable to create snapshot (Microsoft CSV Shadow Copy Provider) (mode: Veeam application-aware processing). Details: Thread was being aborted.
Operation was canceled by user

Am I missing something obvious?

Seb

[veremin]

Can you confirm that there is no snapshot activity at that time of backup, as, according to the log, it is the root cause? Also, be aware that the team behind this community can help you with debug logs analyzing, so, you'd better contact our support team with this.

Thanks.

[spgsit5upport]

Yes, there is nothing else running on this (or any other HV host)

I realize that I can contact support, but I might be missing something obvious (do not think so in that case)

Seb

[veremin]

I realize that I can contact support, but I might be missing something obvious (do not think so in that case)

Neither can I remember similar case from the top of my head, nor the brief search suggests anything. So, the best way would be to open a case, indeed.

Thanks.

[mtremer]

Hi,

i have the same problem with a customer. Can you give me information, if you got a solution last year?

Regards,
Markus Tremer

[foggy]

Markus, we cannot track the solution, since the OP hasn't shared his case ID. Please contact technical support directly.