Symptoms

Granular Level Recoveries (GLR) mount of Hyper-V Virtual Machine (VM) fails with messages similar to the following:From axionfs.log: axionfs Error <10900>: cbfs_get_file_security: function called with invalid parameter. From avhyperv_plugin.log: avhypervglr Info <18750>: Failed to mount VM <DELLEMC> avhypervglr Error <13794>: Hyper -V GLR Service had the following error = STATE_EVENT_IGNORED - Ignoring requested state transition for the 'plugin_mount_vm' event with transition cause of 'CAUSE_MOUNT_NEW_VOLUME' while in the 'STATE_NEEDS_REBOOT' state avhypervglr Error <15458>: Unable to mount VHDs From avhypervglrsvc.log: [avhypervglrsvc.exe] Fetching Virtual Disk properties for 'C:\Program Files\avs\var\avfscache\AVFSMOUNT\00000001\d$\VM\Hyper-V\Virtual Hard Disks\DELLEMC_592A3536-12B2-4555-9850-A8D2A1B9D816.avhdx' with volume mappings set to 'false'. avhypervglrsvc.exe Info <42422>: Unable to get Virtual Disk Information. OpenVirtualDisk failed with error (3): The system cannot find the path specified. [avhypervglrsvc.exe] hypervvss_vdisk::set_vdisk_parent -> in_path='C:\Program Files\avs\var\avfscache\AVFSMOUNT\00000001\d$\VM\Hyper-V\Virtual Hard Disks\DELLEMC_592A3536-12B2-4555-9850-A8D2A1B9D816.avhdx', in_parent_path='C:\Program Files\avs\var\avfscache\AVFSMOUNT\00000001\d$\VM\Hyper-V\Virtual Hard Disks\DELLEMC.vhdx'. avhypervglrsvc.exe Error <42422>: Unable to set Virtual Disk Parent Path. OpenVirtualDisk failed with error (3): The system cannot find the path specified. CoInitializeSecurity Failed because it has been already called by this thread avhypervglrsvc.exe Info <13669>: VDS Service Completed. Result = The operation completed successfully. avhypervglrsvc.exe Info <13686>: Mounting VHD file path = C:\Program Files\avs\var\avfscache\AVFSMOUNT\00000001\d$\VM\Hyper-V\Virtual Hard Disks\DELLEMC_592A3536-12B2-4555-9850-A8D2A1B9D816.avhdx avhypervglrsvc.exe Error <13701>: Failed to Get Security attributes for VHD file 'C:\Program Files\avs\var\avfscache\AVFSMOUNT\00000001\d$\VM\Hyper-V\Virtual Hard Disks\DELLEMC_592A3536-12B2-4555-9850-A8D2A1B9D816.avhdx'. Error = A device attached to the system is not functioning. avhypervglrsvc.exe Error <13687>: Unable to get security attributes for file = C:\Program Files\avs\var\avfscache\AVFSMOUNT\00000001\d$\VM\Hyper-V\Virtual Hard Disks\DELLEMC_592A3536-12B2-4555-9850-A8D2A1B9D816.avhdx avhypervglrsvc.exe Error <13693>: AddVDisk returned error The system cannot find the path specified. [] No more virtual disk provider found avhypervglrsvc.exe Error <13680>: Failed to query Provider avhypervglrsvc.exe Error <13678>: Failed to mount vhd disk [avhypervglrsvc.exe] xml = C:\Program Files\avs\var avhypervglrsvc.exe Info <15441>: Failed to find disk at index = 1 NOTE: In some environments, it may also cause the Windows GLR servers or proxies to reboot during the browse attempt.

Cause

GLR or Table Level Recovery (TLR) is not supported for Windows 2022 and later, which is also reflected in the Avamar Support Matrix.

Resolution

Workaround: To perform GLR of a database. Recover the database to a file.Use the Itempoint tool to mine the data.

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