Link to home
Start Free TrialLog in
Avatar of NAZ1000
NAZ1000Flag for United Kingdom of Great Britain and Northern Ireland

asked on

Fix Running HyperV which will not backup or create checkpoints - disk not found

A Windows 2016 HyperV VM had grown with multiple AVHDX files - took a copy of the whole VM folder and then reluctantly merged the files as have had issues before with VHDX files not being found subsequently.
The merges completed - VM still running fine - disk space reclaimed. Now when I try to backup using VEEAM complains cannot find the disk. Creating checkpoint also complains not found. Tried Win Server Backup complains EFI Specified disk cannot be found. So Im pretty sure if this VM has to reboot it wont boot !
Is there anything I can do to fix this in the running VM without resorting to the backups (VEEAM and Windows Fwhich will hopefully work but result in downtime / some live data loss)

Thank you !

Avatar of E C
E C
Flag of United States of America image

Some ideas:

1. In Veeam try creating a NEW backup job, select just that VM and back it up. Does it work?

2. Using Hyper-V Manager are you able to export the VM to make a copy of it?

3. Using PowerShell from the Hyper-V host, if you run Get-VMsnapshot –VMname MYSERVER does it give any helpful info?
Avatar of NAZ1000

ASKER

Thank you

1. Tried this - Veeam complains about a missing disk

2. HyperV creates the folder where I try exported - but its blank

3. This runs ok and reports the following - seems OK but the fact that windows server backup complains no EFI partition found im pretty sure it wont boot on restart but its running fine -

PS C:\Users\Administrator> Get-VMsnapshot –VMname 2016

VMName Name                           SnapshotType CreationTime        ParentSnapshotName
------ ----                           ------------ ------------        ------------------
2016   2016 - (11/08/2020 - 12:17:16) Standard     11/08/2020 12:17:21
2016   2016 - (06/04/2021 - 18:43:06) Standard     06/04/2021 18:43:14 2016 - (11/08/2020 - 12:17:16)
2016   2016 - (08/04/2021 - 19:11:59) Standard     08/04/2021 19:12:04 2016 - (06/04/2021 - 18:43:06)
2016   2016 - (24/04/2021 - 10:08:57) Standard     24/04/2021 10:09:03 2016 - (08/04/2021 - 19:11:59)

I copied all the VM folders to a NAS before the merge - can I use these in worst case to recreate VM - its not a backup - just a copy and paste ?

ASKER CERTIFIED SOLUTION
Avatar of NAZ1000
NAZ1000
Flag of United Kingdom of Great Britain and Northern Ireland image

Link to home
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
Start Free Trial