VMware backups Error "Failed to acquire lock on the virtual disk" since upgrade to Plug-in for VMware 11.2 (4040724)

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VMware backups Error "Failed to acquire lock on the virtual disk" since upgrade to Plug-in for VMware 11.2
説明

Following upgrade to Plug-in for VMware version 11.2, some backups fail with the below log messages:
[VM-name] Waiting to acquire lock on the virtual disk(s)
[VM-name] Failed to acquire lock on the virtual disk
[VM-name] Diagnosis Completed, backup failed
Trace on the vmware plug-in shows:
2 VMWCFG ??? 8912 75 0 151104192467 CONFIG: vMotionLock = 'TRUE'
2 VMWCFG ??? 8912 76 0 151104192470 CONFIG: vMotionLockContinue = 'FALSE'
2 VMWCFG ??? 8912 77 0 151104192474 CONFIG: vMotionLockRetries = '10'
6 VDDK ??? 8912 19 0 151104192502 VDDK: VixDiskLib: VixDiskLib_PrepareForAccess: Prepare to access disk.
6 VDDK ??? 8912 19 0 151104192776 VDDK: VixDiskLibVim: VixDiskLibVim_AllowVMotion: Disable VMotion.
6 VDDK ??? 8912 19 0 151105217854 VDDK: FILE: FileCreateDirectoryRetry: Non-retriable error encountered (C:\ProgramData\VMware): Unknown error 183 (0xb7) (183)
6 VDDK ??? 8912 19 0 151107322977 VDDK: VixDiskLibVim: Error 20005 (listener error VmodlVimFaultMethodAlreadyDisabledFault).
6 VDDK ??? 8912 19 0 151107322994 VDDK: VixDiskLibVim: Disable vMotion methods failed with VmodlVimFaultMethodAlreadyDisabledFault at 1567.
6 VDDK ??? 8912 19 0 151107376484 VDDK: VixDiskLibVim: VixDiskLibVim_FreeNfcTicket: Free NFC ticket.
6 VDDK ??? 8912 19 0 151107376790 VDDK: VixDiskLib: VixDiskLib_PrepareForAccess: Disable Storage VMotion failed. Error 20005 (The operation has been disabled by the guest operating system)
原因

If a virtual machine is migrated through Storage vMotion during backup the job will fail. This can leave orphaned virtual disks on the datastores.
In preivous versions of Plug-in for VMware, disabling Storage vMotion for VMs during backup was optional, however since Plug-in for VMware 11.2 the 'Enable virtual machine locking' option is now set by default.
The plugin process will now attempt to lock the VM from vMotion before backup. After 10 unsuccessful locking attempts are made, the backup is failed.
While enabling vMotionLock should work fine, this operation may fail on some VMs for many vmware related reasons such as:
- failure to allocate memory
- Change Block Tracking related issues
- Incorrect vMotion entries left in the vmware database
- Disk consolidation issues leading to files being locked ...
All these issues should be reported and investigated with vmware Support.
対策

Prior to disabling or ignoring the locking please use the option of Unlock vm. This is available for individual vm's and is described in the VMware Plugin Users Guide:
https://support.quest.com/technical-documents/netvault-backup-plug-in-for-vmware/12.1/user-guide/8#TOPIC-1004126
Using the NVBU Web UI, under Create Backup Job, expand the client hosting the VMware plugin and select the plugin then click Actions > Configure.
Here we have 2 different options to workaround this issue should vMotionLocking becomes consistently problematic on some VMs leading to repeated backup failures:
Option 1 - Ignore the failed lock attempts and continue backing the VM.
To do this make sure the option 'Continue without locking' is checked, to allow for the backups to proceed should the attempts to lock the VM fail.
Option 2 - Disable the option 'Enable virtual machine locking' to prevent the NetVault Plug-in for Vmware from requesting a vMotionLock on all VMs before backup.
Defect ID

32423

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製品：: NetVault
12.1, 12.0.1, 12.0, 11.4.5, 11.4, 11.3, 11.2

トピック: Configuration

記事の履歴：: 作成日： 1/11/2017
最終更新日： 5/7/2023

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VMware backups Error "Failed to acquire lock on the virtual disk" since upgrade to Plug-in for VMware 11.2 (4040724)

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