[UR-WG] Actions for next phone meeting on 21.02.2012, 15:00 CET

Tue Feb 21 08:15:43 EST 2012

Hi,

Mike Jones via mobile wrote on 21.02.2012 11:55:
> To follow up on John's WLCG usecase: I agree that VO space allocated
> over a period of time _is_ a usage. BUT VO allocation at any instant is
> not. That said, the dynamics of any allocation/usage needs to be
> recorded to be able to answer the question "over period X did the
> allocation always satisfy: instantaneous_storage( used+available) > N
> (dimension:bytes)?"
A possible implementation could be to have records for the usage and 
records stating the allocated space such that it is possible to do such 
a comparison.
E.g. (in the StAR scheme)

Allocation:
...
<ur:StorageSystem>host.example.org</ur:StorageSystem>
<ur:StorageShare>pool-003</ur:StorageShare>
<ur:StorageClass>allocated</ur:StorageClass>
<ur:StorageResourceCapacityUsed>14728</ur:StorageResourceCapacityUsed>
...

Usage:
...
<ur:StorageSystem>host.example.org</ur:StorageSystem>
<ur:StorageShare>pool-003</ur:StorageShare>
<ur:StorageResourceCapacityUsed>1728</ur:StorageResourceCapacityUsed>
...

This would mean that the analysis of the records has to be careful in 
not mixing the different meanings of the records.

Cheers,
Ralph

> John, does that last clause satisfy WLCG?
>
> Mike
> --
> Sent from my Android phone with K-9 Mail. Please excuse my brevity.
>
> john.gordon at stfc.ac.uk wrote:
>
>     I’ll be in Taiwan next week UTC+8 so I may or may not attend.
>     Depends if anything official is happening that evening and if I can
>     stay awake and if Skype works.
>
>     I’ll add the WLCG storage use case to the wiki before then. I must
>     stress that this is important to WLCG and that we consider space
>     allocated to a VO as ‘usage’ as it is not available to others and is
>     to be recorded just like space occupied by files. i.e. Not
>     monitoring any more than recording the existence of files in
>     monitoring.
>
>     John
>
>     *From:*ur-wg-bounces at ogf.org [mailto:ur-wg-bounces at ogf.org] *On
>     Behalf Of *Andrea Cristofori
>     *Sent:* 21 February 2012 08:15
>     *To:* Jon Kerr Nilsen
>     *Cc:* ur-wg at ogf.org
>     *Subject:* Re: [UR-WG] Actions for next phone meeting on 21.02.2012,
>     15:00 CET
>
>
>     Dear all,
>
>     Sorry for the short notice but neither I or Jon can make it to today
>     phone conference. We would like then to postpone it to next week
>     (same day, same time).
>     About today actions Jon already published the document and I got an
>     answer for the slot at OGF:
>
>     http://www.ogf.org/gf/event_schedule/index.php?id=2413
>
>     Again apologies.
>
>     Cheers,
>     Andrea
>
>
>
>
>     On 02/21/2012 09:08 AM, Jon Kerr Nilsen wrote:
>
>     Hi all,
>
>     As John AK just reminded me, the next phone meeting is today. We'll
>     go through the actions mentioned below and possibly make some new
>     ones. Just to try out something new, I suggest we try the Skype
>     conference room in Lund (which is starting to get stable now). So
>     you can call in to
>
>     Place: Skype
>     Skype contact: lund.room.1
>     Phone bridge: +46462884608
>
>     cheers,
>
>     Jon
>
>     On 7. feb. 2012, at 17:32, Andrea Cristofori wrote:
>
>
>
>     Dear all,
>
>     Most of the phone conference has been focused on the comments on the
>     use cases provided by John AK. We commented directly inline on the
>     wiki. Feel free to add more Use cases if not present. We will
>     comment them during next phone conference. We also agreed in asking
>     for a second time slot during OGF (if possible the same day) and
>     divide the agenda in two parts and JKN will look for information on
>     how to make the document he circulated the 25th public. The actions
>     for next meeting are the following:
>
>     - AC: Ask for another session the same day at OGF and update the
>     agenda on OGF website
>     - JKN: make public the document
>     - All: write some examples for the different use cases (minima,
>     grid, local, etc.) (Ralph local, JAK Grid/dCache)
>
>
>
>     Especially for John Gordon: can you please comment on those two use
>     cases:
>
>      1. As a project I would like to be able to view the used and unused
>         storage space that I have on a storage resource.
>         - Thus I can see how much headroom I have.
>
>     All: seems to be more monitoring Comments from John are required
>
>      1. As a project I would like to be able to view the requested
>         storage I have on a specific resource and the allocated/reserved
>         resources I have on that resource.
>         - Thus I can see I asked for 100TB and I currently have only
>         80TB at my disposal (of which i am using 50TB).
>
>     All: seems to be more monitoring Comments from John are required
>
>
>     Cheers
>     Andrea
>
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>
>
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>
>
>
>     --
>
>     Andrea Cristofori
>
>     INFN-CNAF
>
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>
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>
>     Italy
>
>     Tel. :+39-051-6092920
>
>     Skype: andrea-cnaf
>
>
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