Volume Shadow Copy Service error

[Jeremysmit]

Support ID: 00602637

Dear People i have a problem with a backup of a Hyper-v virtual machine.
we needed like 2 months ago to build a new file server. so we did this.

we created a new machine in Hyper-v and added the disks and serve to the
failovercluster.

Then we added it to a backup job in Veeam.

from the first try it didnt backupped the server Fs02.



It keeps saying abbout vss

one of the first messages in eventviewer: event id: 12289, source: VSS,
Logname : Application

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 Volume Shadow Copy Service error: Unexpected error while calling
 GetStorageDependencyInformation. hr = 0x8007048f, The device is not
 connected. .

 Operation: Automatically choosing a diff-area volume Processing
 EndPrepareSnapshots

 Context: Execution Context: System Provider

 Error-specific details: Error: (0x8007048f) The device is not connected.

the second one in eventviewer:
event id: 8, source: volsnap, logname:
system (this one is listed 2 times in eventviewer)

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 The flush and hold writes operation on volume timed out while waiting for a
 release writes command.

the third one in eventviewer:
event id: 190, source: veeam mp, logname: veeambackup

view other informations in eventviewer: event id: 150, level is information

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 VM IMG-FS02 task has finished with 'InProgress' state. Task details: Failed
 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. Retrying snapshot creation attempt (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.) Task has been rescheduled

So first i got support from veeam but they couldn’t help because it is a
windows server 2012 problem.

i was looking to the vss admin writers, 3 where in a failed state:

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 Writer name: 'System Writer'

 Writer Id: {e8132975-6f93-4464-a53e-1050253ae220}

 Writer Instance Id: {6c7aba0f-bd49-4e6b-a14a-a28df0521fdc}

 State: [9] Failed

 Last error: Timed out



 Writer name: 'FSRM Writer'

 Writer Id: {12ce4370-5bb7-4c58-a76a-e5d5097e3674}

 Writer Instance Id: {0cb99971-cfca-4f71-886a-ac5736de346a}

 State: [9] Failed

 Last error: Timed out



 Writer name: 'WMI Writer'

 Writer Id: {a6ad56c2-b509-4e6c-bb19-49d8f43532f0}

 Writer Instance Id: {cb5511a9-7ad6-4a3c-878f-356d5b0b7bfc}

 State: [9] Failed

 Last error: Timed out

i searched for the services of thos admin writers and restarted them.the
vss admin writers are no healty, and After that I rebooted the server. But
still I got no success.

When I try to run a backupjob of the server in veeam this is the static
log:
Image
I don’t know if this is necessary, but for the info I put this picture with
it PLEASE HELP