[UR-WG] Actions for next phone meeting on 21.02.2012, 15:00 CET
Ralph Mueller-Pfefferkorn
ralph.mueller-pfefferkorn at tu-dresden.de
Tue Feb 21 08:21:07 EST 2012
Just got a use case for storage monitoring (not accounting):
the OGF Wiki server.
Wanted to add something and got:
Error saving wiki page: No space left on device
:)
Cheers,
Ralph
Ralph Mueller-Pfefferkorn wrote on 21.02.2012 14:15:
> 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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>>
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>>
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>>
>>
>>
>>
>> --
>>
>> Andrea Cristofori
>>
>> INFN-CNAF
>>
>> Viale Berti Pichat 6/2
>>
>> 40127 Bologna
>>
>> Italy
>>
>> Tel. :+39-051-6092920
>>
>> Skype: andrea-cnaf
>>
>>
>> --
>> Scanned by iCritical.
>>
>>
>>
>>
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>
>
>
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