Host-based backup of Microsoft Hyper-V VMs.
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msp2010
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2012R2-Cluster EventID8 on CSV

Post by msp2010 »

Hi *,

when I make a backup with BR7 SP3 (7.0.0.839) on on Hyper-V-Cluster 2012R2 with an CSV i get an error during creating the snapshot from b&r.

Code: Select all

Unable to create snapshot (Microsoft Software Shadow Copy provider 1.0;Microsoft CSV Shadow Copy Provider) (mode: Crash consistent). Details: Unknown status of async operation The shadow copy provider timed out while flushing data to the volume being shadow copied. This is probably due to excessive activity on the volume. Try again later when the volume is not being used so heavily. --tr:Failed to create VSS snapshot. --tr:Failed to perform pre-backup tasks.
Unable to allocate processing resources. Error: Unknown status of async operation The shadow copy provider timed out while flushing data to the volume being shadow copied. This is probably due to excessive activity on the volume. Try again later when the volume is not being used so heavily. --tr:Failed to create VSS snapshot. --tr:Failed to perform pre-backup tasks.
In the EventLog i get EventID 8 from snapvol (time limit has occured for volume "")

Scenario:
Cluster with 3 VMs on c:\ClusterStorage\

Then I will backup all 3 VMs. The first and the last VM are backed up, but not the middle one.

Regards
Marc
veremin
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Re: 2012R2-Cluster EventID8 on CSV

Post by veremin »

Hi,

Have you already seen this KB article that describes similar issue? Typically, the root cause of this behavior is Volume Shadow Copy Service inability to allocate disk space for shadow copy creation.

Thanks.
msp2010
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Re: 2012R2-Cluster EventID8 on CSV

Post by msp2010 »

Yes I´ve tested before I wrote this forum entry.

I set on all Drives C: (where c:\clusterstorage is) and D: the ShadowCopy to "NO LIMIT"
But the error still exist´s.

As CSV we use an IBM V3700 with SATA-Connection.

Regards
Marc
veremin
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Re: 2012R2-Cluster EventID8 on CSV

Post by veremin »

Then, you'd better open a ticket with our support team and let them investigate it directly, as log investigation seems to be required here. Thanks.
nippertje
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Re: 2012R2-Cluster EventID8 on CSV

Post by nippertje »

Hi,

I am having exactly the same issue with 2012R2 cluster. Did you find a solution to this?

James
foggy
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Re: 2012R2-Cluster EventID8 on CSV

Post by foggy »

James, since Marc hasn't provided his support case ID, there's no opportunity for us to check for solution, unless he comes back to update the thread. I recommend contacting support directly with this, for faster response.
msp2010
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Re: 2012R2-Cluster EventID8 on CSV

Post by msp2010 » 1 person likes this post

Sorry for my late response
Case # 00526323

In the VMs I I had to enable the "Network Detection" in the the advanced Share-Configuration. For that these services mut be running also:
n order to enable the Network Discovery settings, you may make sure the following services are enabled and running.
 
-      DNS Client
-      Function Discovery Resource Publication
-      SSDP Discovery
-      UPnP Device Host
buddyfarr
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Re: 2012R2-Cluster EventID8 on CSV

Post by buddyfarr »

msp2010 - did the above fix your error?
veremin
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Re: 2012R2-Cluster EventID8 on CSV

Post by veremin »

The case is not in English, so we can't make a lot of sense of it. But since msp2010 came back with his update, I believe that enabling Network Detection was the resolution for him. Thanks.
maroon.ibrahim
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Re: 2012R2-Cluster EventID8 on CSV

Post by maroon.ibrahim »

Hi,

Would you please be more precise about network detection? Actually, we are doing a proof of concept on your product... and we need to see the software running at least on the lab.. so if no one can help us to do the proof of concept ... plenty of software providers could help us....

Thank you,
foggy
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Re: 2012R2-Cluster EventID8 on CSV

Post by foggy »

I believe the OP refers to this setting. Anyway, if you need assistance, you can contact support directly.
maroon.ibrahim
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Re: 2012R2-Cluster EventID8 on CSV

Post by maroon.ibrahim »

it is solved now... none of your proposed solutions helped...

Thank you,
Vitaliy S.
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Re: 2012R2-Cluster EventID8 on CSV

Post by Vitaliy S. »

@maroon.ibrahim, can you please share the solution that helped you?
marshallcn01
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Re: 2012R2-Cluster EventID8 on CSV

Post by marshallcn01 » 2 people like this post

Hi, i had this same issue and found the resolution here:http://www.itbuilder.co.uk/Blog/entryid ... r2-cluster

Basically, because the vhdx was on a cluster shared volume all the configuration files needed to be on the same CSV too.
hermanbrood
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Re: 2012R2-Cluster EventID8 on CSV

Post by hermanbrood » 3 people like this post

I took the efforts to register to thank you, marshallcn1. Very nice, that fixed it. I was having a virtual machine which resided on a CSV, except the configuration file. Moved the configuration files to the CSV and everything works fine now.
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Re: 2012R2-Cluster EventID8 on CSV

Post by jgkaloust »

same here ! thanks marshallcn01 for the advice it worked perfectly :)
RobinPGI
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Re: 2012R2-Cluster EventID8 on CSV

Post by RobinPGI »

In my case it was that some of the VM files were on a local disk, and others were on the CSV. I Moved everything to the same CSV and it's working normally now. Thanks for the help.
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Re: 2012R2-Cluster EventID8 on CSV

Post by vchris »

Hey wanderer who still got some 2012R2 servers to work with:

You will have the same issue if the VM has a checkpoint location outside of the CSV hosting the VHD.

Have a good troubleshooting,
Knight of the always on
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