Forum Discussion

Genericus's avatar
Genericus
Moderator
4 years ago

update retention level and recalculate all images?

I backup all my images to a data domain at retention 00 - set to 4 weeks. Then duplicate to tape at retention level 13 set to 8 weeks. I am tight on space on the data domain and want to set reten...
8.1.2
Solaris
  • X2's avatar
    X2
    4 years ago

    I'm not able to understand something:

    Genericus wrote:

    Like "bpexpdate -recalculate -copy 1 -ret 00 -force" or "bpexpdate -recalculate -ret 00 -force"

    I am concerned this will SET all image copy 1 to retention 00 - which would be bad since I know I have tapes that have been recopied and are now copy number 1.

    Your backup to DD will create copy #1 on DD. The duplication from DD to tape will create copy #2 on tape.

    Are there some other images which are on tape and are copy #1?

    How about getting list of images on the DD using the folllowing and then changing the expiry date of those images only?

    bpimmedia -stype DataDomain -dp <POOLNAME> >/tmp/NBU_Images.txt

    Ref: bpimmedia 8.1.2

     

     

  • Genericus's avatar
    Genericus
    4 years ago

    So looks like i have a solution that is a combination of scripts - 

    1. for each tape in the data domain vtl - list the images and bpexpdate -recalculate -ret 00

    2. for each image in the bpimmedia -stype DataDomain  run the bpexpdate -recalculate -ret 00 

    NOTE - these take a long time to run. Then I have to clean the data domain to recover the space.

X2's avatar
X2
Moderator

I'm not able to understand something:

Genericus wrote:

Like "bpexpdate -recalculate -copy 1 -ret 00 -force" or "bpexpdate -recalculate -ret 00 -force"

I am concerned this will SET all image copy 1 to retention 00 - which would be bad since I know I have tapes that have been recopied and are now copy number 1.

Your backup to DD will create copy #1 on DD. The duplication from DD to tape will create copy #2 on tape.

Are there some other images which are on tape and are copy #1?

How about getting list of images on the DD using the folllowing and then changing the expiry date of those images only?

bpimmedia -stype DataDomain -dp <POOLNAME> >/tmp/NBU_Images.txt

Ref: bpimmedia 8.1.2

 

 

Genericus's avatar
Genericus
Moderator
4 years ago

If you backup - you get image copy number 1. If you duplicate that you get image copy number 2. If you duplicate either copy 1 or 2 you get copy number 3. UNLESS - a copy expires. These copy numbers never change.

If you backup at 2 week retention and duplicate to 1 year retention, then 6 weeks later make an infinite copy - you will create copy 1 as infinite and the 1 year copy will retain copy number 2.

I have updated from LTO2 to LTO5, so all my oldest infinite backups have various copy numbers. Since I copied them to disk then to tape.

I have both disk and VTL targets on DD, I was wondering how to recalc the boost images. Looks like your command might work to find those.

bpimmedia -stype DataDomain -dp <POOLNAME> >/tmp/NBU_Images.txt