[gpfsug-discuss] translating /dev device into nsd name

[Jez Tucker]

Hi Aaron

   An alternative method for you is:

from arcapix.fs.gpfs import Nsds

 >>> from arcapix.fs.gpfs import Nsds
 >>> nsd = Nsds()
 >>> for n in nsd.values():
...     print n.device, n.id
...
/gpfsblock/mmfs1-md1 md3200_001_L000
/gpfsblock/mmfs1-md2 md3200_001_L001
/gpfsblock/mmfs1-data1 md3200_001_L002
/gpfsblock/mmfs1-data2 md3200_001_L003
/gpfsblock/mmfs1-data3 md3200_001_L004
/gpfsblock/mmfs2-md1 md3200_002_L000

Ref: http://arcapix.com/gpfsapi/nsds.html

Obviously you can filter a specific device by the usual Pythonic string 
comparators.

Jez


On 17/12/16 07:04, Luis Bolinches wrote:
> Hi
> THe ts* is a good fear, they are internal commands bla bla bla you 
> know that
> Have you tried mmlsnsd -X
>
> --
> Ystävällisin terveisin / Kind regards / Saludos cordiales / Salutations
>
> Luis Bolinches
> Lab Services
> http://www-03.ibm.com/systems/services/labservices/
>
> IBM Laajalahdentie 23 (main Entrance) Helsinki, 00330 Finland
> Phone: +358 503112585
>
> "If you continually give you will continually have." Anonymous
>
>     ----- Original message -----
>     From: Aaron Knister <aaron.s.knister at nasa.gov>
>     Sent by: gpfsug-discuss-bounces at spectrumscale.org
>     To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
>     Cc:
>     Subject: [gpfsug-discuss] translating /dev device into nsd name
>     Date: Sat, Dec 17, 2016 6:24 AM
>     Hi Everyone,
>
>     I'm curious about the most straightforward and fastest way to identify
>     what NSD a given /dev device is. The best I can come up with is
>     "tspreparedisk -D device_name" which gives me something like:
>
>     tspreparedisk:0:0A6535145840E2A6:/dev/dm-134::::::0:
>
>     that I can then parse and map the nsd id to the nsd name. I hesitate
>     calling ts* commands directly and I admit it's perhaps an irrational
>     fear, but I associate the -D flag with "delete" in my head and am
>     afraid
>     that some day -D may be just that and *poof* there go my NSD
>     descriptors.
>
>     Is there a cleaner way?
>
>     -Aaron
>
>     --
>     Aaron Knister
>     NASA Center for Climate Simulation (Code 606.2)
>     Goddard Space Flight Center
>     (301) 286-2776
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>
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-- 
*Jez Tucker*
VP of Research and Development, ArcaStream
jtucker at arcastream.com
www.arcastream.com <http://www.arcastream.com> | Tw:@arcastream.com

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