.ost files delted when AAP is enabled

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.ost files delted when AAP is enabled

Veeam Logoby frankive » Thu Mar 16, 2017 7:26 am

i have pretty new bug for you, perhaps.. :)

After upgrading a client with 2 vms to a new physical server (from 2012 hyper-v to 2016 hyper-v) we run all the updates etc. in the guest os. Everything fine.
We thought.

It seems that there terminalserver (2008 R2 + Outlook 2010) started to create a new outlook profile every morning.
Ok.
We started to do some test, log off the user in the middle in the day and log in again.
The .ost file was still there.
Ok.
We then started to check if the nightly reboot of the server was the cause and prevented the daily reboot for a week.
Still; a new outlook profile was created since the .ost was goona.
Ok.

The only thing left; lets look at the .ost files at some kind of database, perhaps Veeam is hitting it somehow with the Application Aware processing?
We disabled the AAP for that particular VM, and..
Seek and you will find; the .ost was there and no new outlook profile was created!

We turned the AAP the next day, and whooops, the outlook profile gets created again!

We turn it off, and behold; the .ost is just and the profile is like it was the day before.

Bug? :)
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Re: .ost files delted when AAP is enabled

Veeam Logoby Mike Resseler » Thu Mar 16, 2017 7:28 am

Frank,

The way you describe it seems indeed like a bug. Maybe it is a combination of Veeam using AAP and the OS thinking it needs to recreate a profile but I don't think this is expected.

Do you have a support ID (and post it here + the follow-up). I believe this certainly needs to be investigated

Thanks
Mike
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Re: .ost files delted when AAP is enabled

Veeam Logoby frankive » Thu Mar 16, 2017 8:08 am

# 02100949
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Re: .ost files delted when AAP is enabled

Veeam Logoby frankive » Thu Mar 16, 2017 9:05 am

trying to turn of hyper-v quisence and see how tht will affect. Suggesteion from Veeam.
Will report back tomorrow to see if that is touching the .ost files.
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Re: .ost files delted when AAP is enabled

Veeam Logoby frankive » Fri Mar 17, 2017 10:08 am

the .ost files get deleted after enabling hyper-v qisence..
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Re: .ost files delted when AAP is enabled

Veeam Logoby Mike Resseler » Fri Mar 17, 2017 10:45 am

Thanks for the update Frank

Please continue to work with our engineer.
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Re: .ost files delted when AAP is enabled

Veeam Logoby frankive » Fri Mar 17, 2017 11:23 am

will do, i post here so other user can see the process :)

I have seen this behavior when i clone harddrive in laptops etc. Outlook will seems to reindex the .ost and download email again.
I guess these clone software also uses microsoft vss engine, perhaps an issue with Outlook 2010 and vss in some cases.
Intereseting.
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Re: .ost files delted when AAP is enabled

Veeam Logoby frankive » Mon Mar 20, 2017 7:35 am

Veeam means since its affected while doing a hyper-v quiencse backup its not something Veeam can help for, it must be a Microsoft issue.
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Re: .ost files delted when AAP is enabled

Veeam Logoby frankive » Thu Mar 30, 2017 5:32 pm

a backup with windows server 2016 native tool went smooth, so Microsoft Backup didnt have this issue..
performed a backup with AAP enabled and performed a process monitor by Veeams suggestion.

the result from veeam engineer.

The vssvc.exe service performs next action with the file:
"SetDispositionInformationFile" with "Delete:True" indicates that the file will be deleted when it is closed. The files will be removed after the file is closed. So it means that Microsoft Shadow Copy service marks the file for deletion. It is kind of MS VSS logic to remove the file.


Have sent the latest logfile from inside guest os to Veeam not, hopefully we are seeing an conclusion to this soon. So far it seems like a Microsoft issue, but only trigged when Veeam Backup is running and not Microsoft Backup.
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Re: .ost files delted when AAP is enabled

Veeam Logoby frankive » Tue Apr 04, 2017 11:13 am

Veeam have no idea so far, seems like vssc.exe is marking the .ost files for deletion during AAP backup. .ost files should normally be excluded from tradiotioanl vss snapshots as far as I know?
Windows server backup is still the rescue so far.
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Re: .ost files delted when AAP is enabled

Veeam Logoby Dima P. » Tue Apr 04, 2017 1:03 pm

Hi Frank,

Please check if ost is listed under this regestry hive on the affected machine: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\BackupRestore\FilesNotToSnapshot
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Re: .ost files delted when AAP is enabled

Veeam Logoby frankive » Tue Apr 18, 2017 9:02 am

yes it is.
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