Forum Discussion

pnobels's avatar
pnobels
Level 3
4 years ago

Netbackup vmware backup stalls often for sharepoint servers

Hi, we often see that vmware backups of specifically sharepoint servers seem to stall.  No error in Netbackup, it just seems to hang...  This only happens with vm's hosting Sharepoint.  It's not alw...
8.1.2
VMware
windows server 2012
  • Hamza_H's avatar
    Hamza_H
    4 years ago

    I think there is an EEB for this as you said it get stuck at Getextent 

    the EEB is 3973811

    you can check this :

    https://www.veritas.com/content/support/en_US/downloads/update.UPD770735

     

    extract :

    Abstract

    NetBackup 8.1.2 HotFix - VMware backups in a hung state Etrack 3973811

    Description

    Veritas Bug ID: ET 3973811

     

    Version: NetBackup 8.1.2

     

    Fix Included resolves: 

     

    VMware backups hang during getExtent call occasionally. This EEB changes assignment of a negative

    number to an unsigned variable, logs once every 10k iteration of a file, and will fail the extent

    calculation if the same offset is seen 10k times in a row.

     

    Install on: Media Server that is the VMware backup host

     

    maybe it is worthy to install this EEB and monitor next backups.

     

    Good luck :)

pats_729's avatar
pats_729
Level 6
Do you see any exceptional CPU or Memory spike during backup on SP servers ? Or even out of backup window?

Is this VMware policy protecting share point or share point policy?
pnobels's avatar
pnobels
Level 3
4 years ago

Hi,

there's no archived performance logging available on these boxes.  I configured some now.  Will need to check if i can simulate it.  Or wait till next week...

Not sure what you mean with the last line.  This is a simple vmware backup of a Windows vm which happens to run a sharepoint environment.   It's not a specific sharepoint backup policy.  The netbackup policy is not aware there's a sharepoint environment on there...