Jumbo1

updated

15 years ago

J

Jumbo1

48 Posts

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10857

January 11th, 2012 06:00

VADP backups

I just started using VADP for VM backups.  Before, I was using the tradtional method of backing up my VMs.  When I use VADP, some of my VM backups always do a FULL backup and some do a FULL and INCR.  I cannot seem to figure what why some do a FULL backup every day.  This is my environment:

Windows 2003 Networker server running 7.6.2.7

A physical Windows 2003 VADP Proxy Server running 7.6.3

A VM Windows 2008 R2 vCenter running 7.6.3

Has anyone seen this?  Please let me know if more information is needed.

Kind Regards,

Karim

  • coganb

    736 Posts

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    Posted January 18th, 2012 23:00

    Hi,

    This is a known issue which is described here:

    http://solutions.emc.com/EMCSolutionView.asp?id=esg122056&usertype=C

    -Bobby

  • Panwar

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    Posted January 11th, 2012 07:00

    Hi Karim

    Please check the schedules configured for the VM clients. It could be the  problem with schedules not configured properly.

    Thanks & Regards

    Panwar

  • Jumbo1

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    Posted January 11th, 2012 07:00

    Panwar - Schedules are correct and other VMs in the group are getting current backup levels.  FULL on days when a FULL should run and INCR on days when INCR should run.

    Bobby - I will check the daemon.raw file.  The VMs that are running a FULL everyday have had a successful FULL backup previously.

    I was researching this issue and I came across a VMware article.  It talks about Change Block Tracking (CBT) and making sure it is enabled on the VMs.  I have not had a chance to check that as I have to shutdown the VM to look at its configuration parameters in vCenter.  Once I check if CBT is enabled or disabled, I will post results.

    Thanks.

  • coganb

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    Posted January 11th, 2012 07:00

    Hi Karim,

    Check the daemon.raw on the server also to see if it tells you why it's doing a full - for example it may tell you "No full backups of this save set were found in the media database".

    -Bobby

  • Jumbo1

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    Posted January 11th, 2012 13:00

    I found a VM that I could play with.  I have a Windows 2003 VM and it runs a FULL VADP backup every time, even if it already had a succesful FULL backup.  Following the VMware KB article - 1031873, I enabled CBT on the 2 virtual drives.  Rebooted the VM and kicked off a backup again.  It ran a FULL again.   The strange thing...When I look at the Save Seesion Details, it shows the Level as FULL.  When I look at the Group Detail, the level is shown as Inc.  See attached pics.

    Group Detail.png

    Save Session Detail.png

  • Thierry101

    2 Intern

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    326 Posts

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    Posted January 11th, 2012 14:00

    hi jumbo

    what your mminfo says? are the schedules set on client and group?

  • netcamp1

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    Posted January 12th, 2012 01:00

    Hello Jumbo.

    Im experiencing the same issues you're having. This is when I try to backup a Linux virtual machine with CBT enabled.

    (I dont have any Windows VMs to play with). Group Details says level incr and Save Session details says Full.

    My NetWorker Server is RedHat Enterprise, 7.6.2SP2, my VADP proxy is a Windows2008R2 machine.

    /Martin

  • vermad1

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    Posted January 12th, 2012 02:00

    Incr backups are only supported for Windows VMs. IF a windowVM is only doing FULL backups then you need to check if there are files in VM containing ASCII charctors.

    From Networker VADP integration guide:

    Note:

    When Changed Block tracking (CBT) is enabled, incremental and differential backups are

    supported only for Windows virtual machines, and all attached disks must be NTFS file

    systems.

    Note also that CBT-based incremental backups are always file based. Image level recovery from

    a CBT-based incremental backup is not supported.

  • Jumbo1

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    Posted January 12th, 2012 05:00

    I did read about the Unix / Linux VMs and how they do a FULL everytime based on the non-NTFS image which is OK.  This made me think about the Windows VMs that are getting a FULL everytime.  I looked at the savegroup completetion email that I get from the system and observed something interesting....  The test VM that I am working on, along with other production Windows VMs that are getting a FULL backup show the image as non-NTFS.  Very strange.  I checked the VM and the drives are NTFS partitioned.  Cannot explain why this is.  See below:

      nj06nt015:*FULL* savegrp: suppressed 63 lines of output.

    * nj06nt015:*FULL*

    * nj06nt015:*FULL*  Reading 7676Total Number of Virtual Disks read is 2.

    * nj06nt015:*FULL* Completed save operation of the non-NTFS Image.

    * nj06nt015:*FULL* Connecting directories saved successfully.

    * nj06nt015:*FULL* Index entries commit session ended successfully.

    * nj06nt015:*FULL* Total number of files backed up: 3.

    * nj06nt015:*FULL* Total backup size: 393375 MB.

    * nj06nt015:*FULL* Completion time: 1/12/2012 4:56:43 AM

    * nj06nt015:*FULL* Total time taken: 4 hr(s) 24 min(s) 41 sec(s)

    * nj06nt015:*FULL* Backup of the non-NTFS volume Success.

    * nj06nt015:*FULL* Cleaningup VADP mount operation.

    * nj06nt015:*FULL* Deleting snapshot for 'snapshot-1106' ...

    * nj06nt015:*FULL*  Task is -1% complete

    * nj06nt015:*FULL*  Task is 95% complete

    * nj06nt015:*FULL*  Task is -1% complete

    * nj06nt015:*FULL* Snapshot for VM nj06nt015 is deleted.

    * nj06nt015:*FULL* Temporary directory 'F:\mnt\nj06nt015' for VADP deleted.

  • Jumbo1

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    Posted January 12th, 2012 08:00

    Disk Management screenshot from the server mentioned in the post...

    NJ06NT015 disks.png