MSDP Clean up

[nbuengr]

Hi,

One of our customer is experiencing a problem with their MSDP.

Upon checking, reamining available space of MSDP is at around 1 TB and they do have scheduled backups that are running.

As per customer, all images from the catalog and MSDP are already expired but no space were freed. 

I believe MSDP runs a clean up but how come no additional disks are allocated and the expired images are still at MSDP?

Thanks!

[Marianne]

Always important to mention NBU version. MSDP cleanup process is different across versions (and documented in relevant Dedupe Guide ).

[nbuengr]

Version is 7.6.

[Nicolai · Accepted solution]

Netbackup should reclaim the space within 12 hours. Else you can manual run the clean-up process

1. Check if another queue processing is running:
   crcontrol --processqueueinfo
2. Repeat step 1 until pending and busy status show "no" as the result.
   Remark: one queue processing can take between a few minutes up to about a day. Progress can be seen in thestoraged.log.
3. Start the CR queue processing:
   crcontrol --processqueue
4. Check if the queue processing is finished by using the following command:
   crcontrol --processqueueinfo
5. Repeat step 4 until pending and busy status show "no" as the result.

Taken from technote :

How to reclaim deduplication storage space manually (PureDisk Storage Pool and NetBackup Media Server Deduplication Pool)

http://www.symantec.com/docs/TECH124914

[Marianne]

If I look at 'Products' section of above TN, it seems only applicable to NBU versions up to 7.1. I remember a forum query some time ago about procedure for post 7.5. All I can remember is that I found the answer in the Dedupe Guide. Will see if I can find it if time permits today.

[nbuengr]

Hi Marianne,

I saw this from Dedupe Guide of NBU 7.6

To process the MSDP transaction queue manually

1. On the MSDP storage server, run the following command:

    UNIX: /usr/openv/pdde/pdcr/bin/crcontrol --processqueue
    Windows: install_path\Veritas\pdde\Crcontrol.exe --processqueue

2. To determine if the queue processing is still active, run the following command:

    UNIX: /usr/openv/pdde/pdcr/bin/crcontrol --processqueueinfo
    Windows: install_path\Veritas\pdde\Crcontrol.exe --processqueueinfo
    If the output shows Busy : yes, the queue is still active.

3. To examine the results, run the following command (number 1 not lowercase letter l):

    UNIX: /usr/openv/pdde/pdcr/bin/crcontrol --dsstat 1
    Windows: install_path\Veritas\pdde\Crcontrol.exe --dsstat 1
   The command may run for a long time; if you omit the 1, results return more quickly but they are not as accurate.

Can I run these commands?

[Nicolai]

Yes - the procedure outlined work or all MSDP versions.

its the crcontrol --processqueue that initiate the clean-up. Even thu NBU 7.6 does not use queues.

[Marianne]

Yep!

Found it : https://www-secure.symantec.com/connect/forums/garbage-data-integrity-check

[nbuengr]

Thanks for all your help!