Hi, here is my problem.
I've set up 3 hyper-v hosts windows 2012 R2 in a Cluster. My problem arise when i try to backup my VM's with Veeam, i can take a crash consistent backup but when i try to use the "Application Aware Processing" it fails.
Here is the error reported by Veeam :
Unable to create snapshot (Microsoft CSV Shadow Copy Provider) (mode: Veeam application-aware processing). Details: Writer 'Microsoft Hyper-V VSS Writer' is failed at 'VSS_WS_FAILED_AT_PREPARE_SNAPSHOT'.
The writer experienced a transient error. If the backup process is retried, the error may not reoccur. --tr:Failed to verify writers state. --tr:Failed to perform pre-backup tasks.
Make sure VM does not have 'iSCSI Software Target Storage Provider' feature installed.
Retrying snapshot creation attempt (Writer 'Microsoft Hyper-V VSS Writer' is failed at 'VSS_WS_FAILED_AT_PREPARE_SNAPSHOT'. The writer experienced a transient error. If the backup process
is retried, the error may not reoccur. --tr:Failed to verify writers state. --tr:Failed to perform pre-backup tasks.)
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 transient error. If the backup
process is retried, the error may not reoccur. --tr:Failed to verify writers state. --tr:Failed to perform pre-backup tasks.
I've reboot my hosts multiple time and retry the backup job multiple times to.I can see, when i use "diskshadow", that the VM's are excluded from backup because the
volume is not in the shadow copy set:
Excluding writer "Cluster Shared Volume VSS Writer", because all of its components have been excluded.
Excluding writer "Shadow Copy Optimization Writer", because all of its components have been excluded.
Excluding writer "BITS Writer", because all of its components have been excluded.
Component "\0AE47DB4-FD22-43AB-9789-AB2266B2A8D6" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\150DC140-5057-415E-948A-23B27DB3DC5D" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-SVEX2010-1\ which is not in the shadow copy set.
Component "\362811A4-FDCB-4687-9063-CE04B8FCDEAF" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\4C630BE2-26E2-4103-82A0-2F0EC41ABE62" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\74E78C64-FB7A-4410-AEEC-262D0104687F" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\7B47238C-A13C-4D22-AF9D-286B6A3F0FA1" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\917DA525-F1E2-4D37-BB26-BA4DC19FD1BC" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\9B6B706C-4603-4967-AE90-B58C1E54B7C2" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\9C63A59D-91B1-4AAE-870A-DBB24F9337F9" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-2\ which is not in the shadow copy set.
Component "\D1141663-8B00-4233-BBF1-1517C8E351A0" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\D3E97A71-17C8-4071-A1B6-316E6CA986AB" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\D8F51252-13AF-4ABF-8D7B-2798D4055F17" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\E25D318B-2D76-4771-9A9C-1DD37ED51A2D" from writer "Microsoft Hyper-V VSS Writer" is excluded from backup,
because it requires volume C:\ClusterStorage\VM-HyperV2012R2-1\ which is not in the shadow copy set.
Component "\BCD\BCD" from writer "ASR Writer" is excluded from backup,
because it requires volume which is not in the shadow copy set.
The writer "ASR Writer" is now entirely excluded from the backup because the top-level
non selectable component "\BCD\BCD" is excluded.
* Including writer "Task Scheduler Writer":
+ Adding component: \TasksStore
* Including writer "VSS Metadata Store Writer":
+ Adding component: \WriterMetadataStore
* Including writer "Performance Counters Writer":
+ Adding component: \PerformanceCounters
* Including writer "System Writer":
+ Adding component: \System Files
+ Adding component: \Win32 Services Files
* Including writer "Microsoft Hyper-V VSS Writer":
+ Adding component: \Host Component
* Including writer "Registry Writer":
+ Adding component: \Registry
* Including writer "WMI Writer":
+ Adding component: \WMI
* Including writer "COM+ REGDB Writer":
+ Adding component: \COM+ REGDB
* Including writer "Cluster Database":
+ Adding component: \Cluster Database
I have no problem taking backups with Veeam from my Windows 2008 R2 Hyper-V Cluster
Can somebody help me figure out this issue ?
Thank you
