File-based backup in vCenter VAMI UI failing with stats and tasks option being selected
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File-based backup in vCenter VAMI UI failing with stats and tasks option being selected

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Article ID: 344841

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Updated On:

Products

VMware vCenter Server

Issue/Introduction

Symptoms:

  • File-based backup using the vCenter VAMI UI fails with with an error message: 
    BackupManager encountered an exception.

 

  • The backup.log in /var/log/vmware/applmgmt contains the following errors: 
    [YYYY-MM-DDTHH:MM:SS].648 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-19574] [VCDB::BackupVCDB:VCDB.py:2060] ERROR: Encounter error during backup VCDB.
Traceback (most recent call last):
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/components/VCDB.py", line 1939, in BackupVCDB
    raise Exception('Full backup not allowed during VM snapshot')
Exception: Full backup not allowed during VM snapshot 
    [YYYY-MM-DDTHH:MM:SS].680 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-1XXX4] [Proc::UpdateExceptionStatus:Proc.py:383] ERROR: Full backup not allowed during VM snapshot 
    [YYYY-MM-DDTHH:MM:SS].681 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-1XXX4] [telemetry::check_telemetry_enabled:telemetry.py:285] INFO: Check the telemetry conf file 
    [YYYY-MM-DDTHH:MM:SS].681 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-1XXX4] [telemetry::check_telemetry_enabled:telemetry.py:289] INFO: Check configuration parameter vcenter.telemetry 
    [YYYY-MM-DDTHH:MM:SS].684 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-1XXX4] [telemetry::check_telemetry_enabled:telemetry.py:293] INFO: Telemetry for Postgres is enabled 
    [YYYY-MM-DDTHH:MM:SS].684 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-1XXX4] [telemetry::get_vc_version:telemetry.py:301] INFO: Get vCenter version from /etc/vmware/.buildInfo 
    [YYYY-MM-DDTHH:MM:SS].684 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-1XXX4] [telemetry::get_vc_version:telemetry.py:307] INFO: vCenter version is 7.0U2b
    [YYYY-MM-DDTHH:MM:SS].685 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-1XXX4] [VCDB::BackupVCDB:VCDB.py:2083] INFO: Telemetry command is ['/opt/vmware/vpostgres/current/bin/vmw_vpg_config/pg_trigger_telemetry.py', '--event-type', 'backup', '
--data1', None, '--data3', '7.0U2b', '--data2', 'Success'] 
    [YYYY-MM-DDTHH:MM:SS].685 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-1XXX4] [Proc::RunCmdForOutput:Proc.py:537] INFO: Executing command: ['/opt/vmware/vpostgres/current/bin/vmw_vpg_config/pg_trigger_telemetry.py', '--event-type', 'backup',
 '--data1', None, '--data3', '7.0U2b', '--data2', 'Success']. 
    [YYYY-MM-DDTHH:MM:SS].689 [20XXXXXX-XXXXXX-XXXXXX11] [VCDBBackup:PID-1XXX4] [VCDB::BackupVCDB:VCDB.py:2087] ERROR: Failed to push telemetry data for backup expected str, bytes or os.PathLike object, not NoneType
Traceback (most recent call last):
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/components/VCDB.py", line 2084, in BackupVCDB
    RunCmdForOutput(logger, cmd)
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/util/Proc.py", line 541, in RunCmdForOutput
    close_fds=close_fds)
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/util/Proc.py", line 479, in ExecCmd
    shell=shell, cwd=cwd, close_fds=close_fds)
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/util/Proc.py", line 282, in CreateProcess
    shell=shell, cwd=cwd, close_fds=close_fds, env=current_env)
  File "/usr/lib/python3.7/subprocess.py", line 800, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.7/subprocess.py", line 1482, in _execute_child
    restore_signals, start_new_session, preexec_fn)
TypeError: expected str, bytes or os.PathLike object, not NoneType
    [YYYY-MM-DDTHH:MM:SS].746 [20XXXXXX-XXXXXX-XXXXXX11] [MainProcess:PID-1XXX8] [BackupManager::Cleanup:BackupManager.py:406] ERROR: Failed to clean up backup child processes.
Traceback (most recent call last):
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/BackupManager.py", line 650, in main
    backupObj.DoBackup()
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/BackupManager.py", line 335, in DoBackup
    self.LaunchBackupProcesses()
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/BackupManager.py", line 302, in LaunchBackupProcesses
    self.ExecBackupsInParallel()
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/BackupManager.py", line 272, in ExecBackupsInParallel
    taskId=self.args.id, operation='BACKUP')
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/util/Proc.py", line 202, in LaunchMultipleProcesses
    timeout, logger)
  File "/usr/lib/applmgmt/backup_restore/py/vmware/appliance/backup_restore/util/Proc.py", line 178, in VerifyProcStatusAndGetArchive
    (procRecord.process.name, procRecord.status.excMsg))
Exception: Hit exception inside process VCDBBackup: Full backup not allowed during VM snapshot



Environment

VMware vCenter Server Appliance 6.7.x

VMware vCenter Server 7.x

VMware vCenter Server 8.x 

Cause

The Snapshot marker file can sometimes be left on the system in case of backup failure and can cause an issue while taking a vCenter file based backup. 

Resolution

1.) Remove all snapshots from the vCenter VM.

2.) Remove file file backupMarker.txt by running the command:

  • rm /etc/vmware/backupMarker.txt

3.) Re-attempt the backup with stats, events and task option selected.



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