VxRail: Scheduled VxRail Backup Task Failed with 'NoneType' Object has no Attribute 'replace'

Summary: Schedule VxRail Manager backup task failed with an error 'NoneType' object has no attribute 'replace'.

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Symptoms

This issue is observed on VxRail version 7.0.350 for now, the resolution applies to this version only.
In VxRailBackupRestore.log:

VxM_Backup & Restore: 2022-12-01 01:29:04,743 - INFO cronjob is updated.
VxM_Backup & Restore: 2022-12-01 01:29:04,822 - ERROR Caused: 'NoneType' object has no attribute 'replace'
VxM_Backup & Restore: 2022-12-01 01:29:04,822 - ERROR [VxM Backup & Restore ABNORMAL END]
VxM_Backup & Restore: 2022-12-01 01:29:15,314 - INFO Starting to get authentication info.
VxM_Backup & Restore: 2022-12-01 01:29:15,336 - INFO Connecting to vCenter [VC FQDN]
VxM_Backup & Restore: 2022-12-01 01:29:15,422 - ERROR Caused: 'NoneType' object has no attribute 'replace'
VxM_Backup & Restore: 2022-12-01 01:29:15,423 - ERROR [VxM Backup & Restore ABNORMAL END]
VxM_Backup & Restore: 2022-12-01 01:30:06,398 - INFO Starting to get authentication info.
VxM_Backup & Restore: 2022-12-01 01:30:06,420 - INFO Connecting to vCenter [VC FQDN]
VxM_Backup & Restore: 2022-12-01 01:30:06,494 - ERROR Caused: 'NoneType' object has no attribute 'replace'
VxM_Backup & Restore: 2022-12-01 01:30:06,495 - ERROR [VxM Backup & Restore ABNORMAL END]

If you manually run the backup job:

VxRailBackupRestore.log  

Cause

A code defect when retrieving the VSAN datastore object id. 

Resolution

Modify the script  /mystic/vxm_backup_restore/common.py as below, adding two more lines.
Note: Be careful with the modification, use space as indentation.

def get_primary_datastore(cluster_obj):
    """Get the primary datastore on the specified cluster"""
    if not cluster_obj:
        return None

    if not cluster_obj.datastore:
        return None

    current_vxm_sn = get_vxm_sn()
    for datastore in cluster_obj.datastore:
        if not datastore.vm:
            continue
        for vm in datastore.vm:
            if vm.summary.config.uuid is None:     # new added
                continue                              # new added
            vm_uuid = vm.summary.config.uuid.replace("-", "")
            if vm_uuid in current_vxm_sn:
                return datastore

    return None

Affected Products

VxRail
Article Properties
Article Number: 000206764
Article Type: Solution
Last Modified: 23 Jun 2026
Version:  3
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