Hi to all sysadmins.
I'm no expert in MS Windows systems and i need help fixing backup issues.
We have two physical machines running Windows Server 2008 R2 Enterprise SP1 as a Hyper-V host for three virtual machines each - domain controller, exchange server, file server, also running Windows Server 2008 R2 Enterprise SP1.
The problem is, since september weekly backups fail each time, on both machines.
Backup is configured as task scheduler job:
WBADMIN START BACKUP -backupTarget:e: -include:D:\vms -vssFull -quiet
Where E is backup disk (155GB free of 600GB), and D:\vms is location, where virtual hard disks and virtual machines are stored.
Backup used to work properly for several weeks. Windows Server Backup shows 24 number of copies, latest available from 28-09-2013.
I do have registered vss writer:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\WindowsServerBackup\Application Support\{66841CD4-6DED-4F4B-8F17-FD23F8DDC3DE}]"Application Identifier"="Hyper-V"Running vssadmin list writers gives me:
Writer name: 'Microsoft Hyper-V VSS Writer'
Writer Id: {66841cd4-6ded-4f4b-8f17-fd23f8ddc3de}
Writer Instance Id: {91a24129-d7fe-4539-98e6-ed008610873a}
State: [5] Waiting for completion
Last error: Retryable error
Following errors occur in event viewer:
Event ID: 10107 (warning)
One or more physical disks are attached to virtual machine 'slx-lu-ex1'. Back up programs that use the Hyper-V VSS writer cannot back up volumes that are attached to virtual machines as physical disks. To avoid potential data loss, use another method to back up the data on the physical disks. If you restore the data on this virtual machine, make sure to check the data of the physical disk for integrity. (Virtual machine ID E7B82301-709C-4002-874C-C235DFB3C71A)
Event ID: 10102 (error)
Failed to create the backup of virtual machine 'slx-lu-fs1'. (Virtual machine ID B1CC6FA8-824D-4E95-AF06-27E3164182EA)
And finally Event ID 521
The backup operation that started at '2013-11-09T22:30:11.707000000Z' has failed because the Volume Shadow Copy Service operation to create a shadow copy of the volumes being backed up failed with following error code '2155348129'. Please review the event details for a solution, and then rerun the backup operation once the issue is resolved.
Also, i'm not the person who configured whole thing, so please advice if it is the proper way of making backups.
According to event ID 10107, machine slx-lu-ex1 does have connected three phisical drives with exchange databases, logs and journaling, but there disks were mounted since beginning.