unable to make backup of EFA

[bostjanc]

Hi guys.
Using Veeam Backup and replication 9.5 for doing backups.
EFA 3.0.1.7 is on hyperv host.
We are unable to backup EFA VM because it throws an "unlogic error"

1/15/2017 3:19:47 AM :: Unable to allocate processing resources. Error: Writer 'Microsoft Hyper-V VSS Writer' is failed at 'VSS_WS_FAILED_AT_PREPARE_SNAPSHOT'.
The writer experienced a non-transient error. If the backup process is retried,
the error is likely to reoccur.
--tr:Failed to verify writers state.
--tr:Failed to perform pre-backup tasks.

If we run vssadmin list writers on hyperv host we see that Microsoft Hyperv-V VSS Writer is in non-retryable error state. If we restart hyperv management service then this error disappears for awhile, until we dont trigger backup of efa again.

I think its an EFA VM issue, any hints for solving this?

yum info hypervkvpd on efa throws:

Available Packages
Name : hypervkvpd
Arch : x86_64
Version : 0
Release : 0.17.20150108git.el6
Size : 17 k
Repo : base
Summary : HyperV key value pair (KVP) daemon
URL : http://www.kernel.org
License : GPLv2
Description : Hypervkvpd is an implementation of HyperV key value pair (KVP)
: functionality for Linux. The daemon first registers with the
: kernel driver. After this is done it collects information
: requested by Windows Host about the Linux Guest. It also supports
: IP injection functionality on the Guest.

[Zwabber]

Sounds like you try to make a backup with application-aware processing.
Check to see of the option application-aware processing is unticked and rerun the backup again.

[bostjanc]

zwabber thank you for your reply.
Excuse me for my lack of knowledge but where exactly would that option be?
I can't find it.
is it related to this option:

option.png (10.84 KiB) Viewed 3924 times

[Zwabber]

It's a option in Veeam B&R
Edit the backup job and go to Guest Processing;

veaam-guest.png (310.33 KiB) Viewed 3921 times

[bostjanc]

Thanks.
But I can not find that option anywhere in Veeam B&R because we are using the free edition.
I think I had to fix that in my powershell script with wich I run the backup Jobs

# Quiesce VM when taking snapshot (Optional; VMware Tools are required; Possible values: $True/$False)
$EnableQuiescence = $True

I had to put $EnableQuiescence from True to False.
After doing that, backup with the scrip works