2/8/2024 0 Comments Seafile virtual machineThis is not recommended because it will backup the disk as though there was a power off. ![]() Create a new Policy disable quiescing.If Server disk is busy with applications such as SQL, Install NetBackup client and use the SQL agent for Application level backup.Troubleshooting Volume Shadow Copy (VSS) quiesce issueĬannot create a quiesced snapshot because the snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machineĬreating a quiesced snapshot in Windows 2008 and Windows 2008 R2 fails with the error: Snapshot guest failed. The pre-freeze/post-thaw scripts and VSS snapshots inside the guests are a way to create a consistent VM snapshot which is not controlled by NetBackup. NetBackup really uses just the VM snapshot. After this post-thaw script is called to let the application resume the normal operation mode. Once the VM snapshot creation is complete, VMkernel calls the VMware VSS provider inside the guest via tools framework and removes the VSS snapshot. The tools framework interacts with pre-freeze script (if configured) to put the application in backup mode and once the script is run, the VMware VSS Provider (also available from VMware tools) will create the VSS snapshot so that writes to the volumes are tracked. VMware tools framework is the way VMkernel can get into guest operating system. When NetBackup initiates the snapshot (via VCB or vStorage), the virtual machine quiescence is done by ESX/ESXi using VMware tools. In most cases, this option should be enabled. In this case, you must perform your own checks for dataĬaution: Veritas does not recommend that you disable quiesce. If this option is disabled, the snapshot is created without quiescing I/O on the virtual machine. If not consistent, the backed up data may be of little or no value. Without quiescing file activity, data consistency in the snapshot cannot be guaranteed. I/O on the virtual machine is quiesced before NetBackup creates the snapshot. In the great majority of cases, you should accept the default. Note: By default, this option is enabled. The NetBackup client reads the data off the datastore. ![]() VMware VMtools calls VSS to synchronize the file system and creates a snapshot on the datastore.The NetBackup client on the VMware backup host logs into the vcenter and initiates a snapshot.8:10:50 AM - Warning bpbrm(pid=7952) from client : WRN - ALL_LOCAL_DRIVES is not frozenĬannot create a quiesced snapshot because the create snapshot operation exceeded the time limit for holding off I /O in the frozen virtual machine. 8:10:50 AM - Critical bpbrm(pid=7952) from client : FTL - snapshot creation failed, status 156 8:10:21 AM - snapshot backup of client using method VMware VMware VSS Snapshot provider can not quiesce VM Error Message
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