Hi Efim!
Since we don't checkout tapes it won't be an issue for us. Apart from that, it
still doesn't explain why the total of last_use='Data' and last_use!='Data' is
not equal to the output from the query with no last_used specified.
As to your query: I found this one online too, but it's not always reliable,
especially when you create backupsets. They are not in a q volume list but they
are not scratch. I think this query is usefull when you somehow include the
volume history which does contain the backupset volumes.
Kind regards,
Eric van Loon
AF/KLM Storage Engineering
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Efim
Sent: vrijdag 21 november 2014 13:41
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Weird SQL output
Hi,
Select with last_use = ‘Data’ is not correct. If you checkout and when checkin
tapes the parameter last_use can be lost.
If you want to check private tapes without the data, try to use select like
this:
select volume_name from libvolumes where status='Private' and last_use is NULL
and volume_name not in (select volume_name from volumes)
Efim
2014-11-21 12:16 GMT+03:00 Loon, EJ van (ITOPT3) - KLM <Eric-van.Loon AT klm
DOT com>:
> Hi guys!
> I have some weird output from one of my SQL statements. Here it's is:
>
> select count(*) from libvolumes where status='Private'
> Unnamed[1]
> ------------
> 3698
>
> Ok, so 3698 private volumes on this server. Now, how many contain data:
>
> select count(*) from libvolumes where status='Private' and last_use = 'Data'
> Unnamed[1]
> ------------
> 1011
>
> Right, I know a lot of tapes do not have a value in the Last Use column (my
> guess it is that these are tapes created by SAN clients), so how many are
> there:
>
> select count(*) from libvolumes where status='Private' and last_use != 'Data'
> Unnamed[1]
> ------------
> 0
>
> Huh? There should be 3698-1011=2687! Last_use is empty then?
>
> select count(*) from libvolumes where status='Private' and last_use=NULL
> Unnamed[1]
> ------------
> 0
>
> I'm lost here... I'm I doing something wrong? The total of last_use='Data'
> and last_use!='Data' should be the same as the output from the query with no
> last_used specified, right?
> Thanks for any help in advance!
> Kind regards,
> Eric van Loon
>
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Efim
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received this e-mail by error, please notify the sender immediately by return
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Koninklijke Luchtvaart Maatschappij NV (KLM), its subsidiaries and/or its
employees shall not be liable for the incorrect or incomplete transmission of
this e-mail or any attachments, nor responsible for any delay in receipt.
Koninklijke Luchtvaart Maatschappij N.V. (also known as KLM Royal Dutch
Airlines) is registered in Amstelveen, The Netherlands, with registered number
33014286
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