Forum Discussion

john10's avatar
john10
Level 6
9 years ago

VM backup is failing

Hi All, NBU VERSION: - 7.6.1 OS - 2012 One of my vm client backup is failing with 156 and Vm team able to create and delete the snaps manually and system writers are also stable on the server side. Error from detail job summary :- Vmware_freeze vixapi freeze (VMware snapshot) failed with 1 - unrecognised error An error occurred while saving the snap shot :failed to quiesce the virtual machine Vfm_freeze Please confirm whether “virtual disk” service is required mandate to start in the server as its in stopped state .
Backup and Recovery
NetBackup
Windows Server (2003-2008)
  • Michael_G_Ander's avatar
    Michael_G_Ander
    Level 6
    9 years ago

    When the VM team is doing the snapshots are they using quiesce file system ? Ask as this in principle what netbackup does

    In my experience 99% of snapshot problems are caused by things inside the VM, on Windows systems a problem with the VSS system is usually the culprit

    Besides the abovem I have see low available memory, high CPU load, high disk latency cause this kind of problem.

  • john10's avatar
    john10
    Level 6
    9 years ago
    Hi Michael, Thanks for your reply. No VMware team is not using to quiesce while creating snapshot . And also Vss writers are stable on box . Coming latency and high I/O utilisation I will once again check with respective teams
  • john10's avatar
    john10
    Level 6
    9 years ago
    Hi Michael, When vm team is selecting an option "quiesce file system" snap shot is failing , but only "Sql writers are not stable " on server and wintel restated VMware service also still backup is failing with error code 40 so what would be next troubleshooting steps to fix the issue
  • watsons's avatar
    watsons
    Level 6
    9 years ago

    1. Check if this is relevant: 

    http://www.veritas.com/docs/000021380

     

    2. Since VMware side can create & delete snapshot manually, try this to see if the snapshot creation/deletion works via the API (that NBU is using):

    http://www.veritas.com/docs/000042545

  • Michael_G_Ander's avatar
    Michael_G_Ander
    Level 6
    9 years ago

    "Sql writers are not stable" points to the problem being with the VSS snapshot of the SQL inside the VM, the usually problem is a too small shadow area. The next thing I would look for is memory/resources exhaustion messages in the event logs inside the VM.