Backup Central

Hi,



Given following :



Today is 12/01/2012.



I take a backup using



save –y “1 month” –w “1 month” /tmp



mminfo -q ssid=1460574030 -r "sscreate,ssbrowse,ssretent,clretent,volume"



ss created browse time retention clone rete volume

12/01/2012 12/02/2012 12/02/2012 16/02/2012 L50000 (BACKUP)



-------------------------------------------------



Cloning it now using

nsrclone –S 1460574030 –y “1 month” –w “6 month” /tmp



mminfo -q ssid=1460574030 -r "sscreate,ssbrowse,ssretent,clretent,volume"



ss created browse time retention clone rete volume

12/01/2012 12/02/2012 12/07/2012 16/02/2012 L50000 (BACKUP)

12/01/2012 12/02/2012 12/07/2012 12/07/2012 L50149 (CLONE1)



-------------------------------------------------



Cloning it now a second time using

nsrclone –S 1460574030 –y “1 month” –w “7 month” /tmp





mminfo -q ssid=1460574030 -r "sscreate,ssbrowse,ssretent,clretent,volume"



ss created browse time retention clone rete volume

12/01/2012 12/02/2012 12/08/2012 16/02/2012 L50000 (BACKUP)

12/01/2012 12/02/2012 12/08/2012 12/07/2012 L50149 (CLONE1)

12/01/2012 12/02/2012 12/08/2012 12/08/2012 L50150 (CLONE2)







As it is supported that clone copy to have a different retention

the backup copy may have, then, given that,

I am confused with ssretent and clrentent fields :



1) why/where does clretent of 16/02 come from for backup copy ?



2) When will be marked recyclable backup copy ?

12/02 as per original SSRETENT and CLRETENT or

12/07 as per new SSRETENT ?



3) When will clone 1 copy expire ?

12/07 or 12/08 ?



Am I correct assuming it as just a “display” feature,

SSRETENT being just overwritten and media management

has to rely on CLRETENT / volexpire fields ?





Thanks





Th





Kind regards - Bien cordialement - Vriendelijke groeten,



Thierry FAIDHERBE

Backup/Storage & System Management



LE FOREM

Département des Systèmes d'Information

Direction Infrastructure



Boulevard Tirou, 104 Tel: +32 (0)71/206730

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BELGIUM Mail : Thierry.faidherbe<at>forem.be





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Today at 11:29am, Thierry Faidherbe wrote:

mminfo -q ssid=1460574030 -r "sscreate,ssbrowse,ssretent,clretent,volume"



ss created browse time retention clone rete volume

12/01/2012 12/02/2012 12/08/2012 16/02/2012 L50000 (BACKUP)

12/01/2012 12/02/2012 12/08/2012 12/07/2012 L50149 (CLONE1)

12/01/2012 12/02/2012 12/08/2012 12/08/2012 L50150 (CLONE2)



As it is supported that clone copy to have a different retention

the backup copy may have, then, given that,

I am confused with ssretent and clrentent fields :



1) why/where does clretent of 16/02 come from for backup copy ?

I'm not sure. I believe it has to do with the way that your retention of
"1 month" is defined in NetWorker. What is the definition for "1 Month"
in your NetWorker configuration? If it is not that, is there a
retention defined for the pool that L50000 is a member of? If that is
not it, someone else will have to educate both of us.

2) When will be marked recyclable backup copy ?

12/02 as per original SSRETENT and CLRETENT or

12/07 as per new SSRETENT ?

Each clone (including the original copy) is marked recyclable when its
clretent is reached. So, the original backup copy will be marked
recyclable on 16/02 (per your mminfo output).

3) When will clone 1 copy expire ?

12/07 or 12/08 ?

CLONE1 will expire on 12/07.

Am I correct assuming it as just a ?display? feature,

SSRETENT being just overwritten and media management

has to rely on CLRETENT / volexpire fields ?

SSRETENT will take on the value of the CLRETENT that is the furthest
out. When CLRETENT was added, SSRETENT was changed to be the date when
all clones of the SS will finally have expired. The original backup
copy is now considered to be a clone. Each copy is expired when its
CLRETENT date is reached.

--
Frank Swasey | http://www.uvm.edu/~fcs
Sr Systems Administrator | Always remember: You are UNIQUE,
University of Vermont | just like everyone else.
"I am not young enough to know everything." - Oscar Wilde (1854-1900)


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