Citrix XenServer Backup based on Custom Fields

As Citrix XenServer Admin, I implemented VMs backup and validation strategy that use the values stored in the custom fields of XenCenter to control the process of the backup.the backup is done through bash script installed on the XenServer. the script will also send notification emails.

this is the list of the custom fields I defined to control this process:

vm_allow_backup
vm_backup_now
vm_backup_sr
vm_backup_result
vm_start_order
vm_next_wait
vm_ping_ip
vm_backup_indays
vm_last_backup
pool_backup_result
pool_sleeptime_betw...
pool_metadata_sr
vm_need_validation
vm_validation_result
vm_parent