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SCV backup job fails due to errors in Quiescing Applications and Unquiescing Applications phases

  1. Last updated
    May 23, 2025
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snapcenter
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Last Updated:
5/23/2025, 6:00:19 AM

Applies to

  • SnapCenter Plug-In for VMware vSphere (SCV) 4.3 and later
  • VMware Tools is running on virtual machines

Issue

  • SCV backup job fails due to errors in Quiescing Applications and Unquiescing Applications phases:
  • Error: Unable to quiesce on SCV: Exception occurred when quiescing virtual machines: VM1, VM2, VM3....Please check 'Create virtual machine snapshot' task on vSphere Web Client or SnapCenter Plug-in for VMware vSphere logs for detailed error message.
  • Error: Unable to unquiesce on SCV: Exception when unquiescing virtual machines: VM1, VM2, VM3.....Please check 'Remove all snapshots' task on vSphere Web Client or SnapCenter Plug-in for VMware vSphere logs for detailed error message.
  • vmcontrol_<JOB_ID>.log shows CreateSnapshot_Task detects exception "An error occurred while quiescing the virtual machine"

DEBUG <HOST> --- [-13873-thread-1] c.n.a.v.VsphereService                   : VsphereUtils: Monitoring Task CreateSnapshot_Task
DEBUG <HOST> --- [-13873-thread-1] c.n.a.v.VsphereService                   : VsphereUtils:State=error(0%)
ERROR <HOST> --- [-13873-thread-1] c.n.a.v.VsphereService                   : An error occurred while quiescing the virtual machine. See the virtual machine's event log for details.
DEBUG <HOST> --- [-13873-thread-1] c.n.a.b.QuiesceManager                   : VMware snapshot status : Failure
DEBUG <HOST> --- [-13873-thread-1] c.n.a.b.QuiesceManager                   : exceptionDuringQuiesce : true

  • wfe_<JOB_ID>.log also indicates that quiescing virtual machines fails:

DEBUG <SCV> --- [       Thread-8] c.n.w.u.LogHelper                        : Starting Quiesce activity
DEBUG <SCV> --- [       Thread-8] c.n.w.r.SCVBackupServiceImpl             : Quiesce on SCV
DEBUG <SCV> --- [       Thread-8] c.n.w.r.u.RestClientUtil                 : Connecting to scv url:  https://localhost:8144/scbr/smcoreplugin/quiesce
ERROR <SCV> --- [       Thread-8] c.n.w.r.SCSClientImpl                    : conn.getResponseCode(): 200
ERROR <SCV> --- [       Thread-8] c.n.w.r.SCVBackupServiceImpl             : Unable to quiesce on SCV: Exception occurred when quiescing virtual machines: <VM>.Please check 'Create virtual machine snapshot' task on vSphere Web Client or SnapCenter Plug-in for VMware vSphere logs for detailed error message.

 

 

 

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