Virtual machine backup operations (such as those using Commvault or Avamar) fail when attempting to create a quiesced snapshot. vCenter reports a failure to quiesce the guest operating system.
Symptoms:
/var/run/log/hostd.log contains: The error code was: 3 The error message was: Quiesce operation canceledThe failure is caused by the Microsoft Volume Shadow Copy Service (VSS) within the guest OS. This typically occurs when:
Follow these steps to verify and restore VSS functionality:
vssadmin list writersservices.msc, and press Enter.If the issue persists, update VMware Tools to the latest version. See: Download Broadcom products, patches and software
For detailed information on VSS architecture, refer to the Microsoft documentation:
How Volume Shadow Copy Service Works
Japanese Version:
スナップショット操作が error code: 3 - Quiesce operation canceled で失敗する