Re: [gpfsug-discuss] Lroc on NVME

2018-06-12 Thread Kumaran Rajaram 
Hi,
 
>>Yes, older versions of GPFS don't recognize /dev/nvme*. So you would need /var/mmfs/etc/nsddevices user exit. >>On newer GPFS versions, the nvme devices are also generic
 but has anyone else tried to get lroc running on nvme and how well does it work.
 
IMHO, the support to recognize /dev/nvme* was added to Spectrum Scale version 5.0.1.
 
The Spectrum Scale version 5.0.1 has LROC performance enhancements compared to the earlier versions, for file stat/read performance from LROC devices.
 
Following provides sample performance data using single  1 x mdtest MPI process with LROC data on INTEL SSDPEDMD016T4L for Spectrum Scale version 5.0.0 vs. 5.0.1.
 
Benchmark Arguments:           mpiexec -f $MACH_FILE -n $MAX_NP $BENCHMARK -i 1 -n $n_files -u -F -T -E -e $file_sz -d $O_DIR     Sample: mpiexec -f /mnt/sw_x86/mpich/mf.perf_x86.c72f1m5u27 -n 1 /mnt/sw_x86/benchmarks/mdtest/mdtest -i 1 -n 65536 -u -F -T -E -e '1024' -d /mnt/gpfs3a/lroc_mdtest_out/uniq_dir_1024_65536             5.0.0 5.0.1 Performance Delta (%)   File metadata Ops/s File metadata Ops/s File StatFile Read File CountFile Size (KiB)File StatFile Read File StatFile Read    16384141703979 51824765 24.2919.77 163843239383585 52204609 32.5728.56 65536115111319 21221893 40.4643.50 65536321418661 2214803 56.1821.52 
 
Best Regards,
-Kums
 
- Original message -From: "Truong Vu" Sent by: gpfsug-discuss-boun...@spectrumscale.orgTo: gpfsug-discuss@spectrumscale.orgCc:Subject: Re: [gpfsug-discuss] Lroc on NVMEDate: Tue, Jun 12, 2018 9:55 AM 
Yes, older versions of GPFS don't recognize /dev/nvme*. So you would need /var/mmfs/etc/nsddevices user exit. On newer GPFS versions, the nvme devices are also generic. So, it is good that you are using the same NSD sub-type.Cheers,Tru.gpfsug-discuss-request---06/12/2018 06:47:05 AM---Send gpfsug-discuss mailing list submissions to gpfsug-discuss@spectrumscale.orgFrom: gpfsug-discuss-requ...@spectrumscale.orgTo: gpfsug-discuss@spectrumscale.orgDate: 06/12/2018 06:47 AMSubject:

Re: [gpfsug-discuss] Lroc on NVME

2018-06-12 Thread Truong Vu 

Yes, older versions of GPFS don't recognize /dev/nvme*.  So you would
need /var/mmfs/etc/nsddevices user exit.  On newer GPFS versions, the nvme
devices are also generic.  So, it is good that you are using the same NSD
sub-type.

Cheers,
Tru.



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To: gpfsug-discuss@spectrumscale.org
Date:   06/12/2018 06:47 AM
Subject:gpfsug-discuss Digest, Vol 77, Issue 15
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Today's Topics:

   1. Re: RHEL updated to 7.5 instead of 7.4 (Felipe Knop)
   2. Re: RHEL updated to 7.5 instead of 7.4 (Jeffrey R. Lang)
   3. Lroc on NVME (Peter Childs)


--

Message: 1
Date: Mon, 11 Jun 2018 09:52:16 -0400
From: "Felipe Knop" 
To: gpfsug main discussion list 
Subject: Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4
Message-ID:




Content-Type: text/plain; charset="utf-8"

Fred,

Correct. The FAQ should be updated shortly.

  Felipe


Felipe Knop k...@us.ibm.com
GPFS Development and Security
IBM Systems
IBM Building 008
2455 South Rd, Poughkeepsie, NY 12601
(845) 433-9314  T/L 293-9314





From:"Frederick Stock" 
To:  gpfsug main discussion list 
Date:06/11/2018 07:52 AM
Subject: Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4
Sent by: gpfsug-discuss-boun...@spectrumscale.org



Spectrum Scale 4.2.3.9 does support RHEL 7.5.

Fred
__
Fred Stock | IBM Pittsburgh Lab | 720-430-8821
sto...@us.ibm.com



From:"Sobey, Richard A" 
To:gpfsug main discussion list 
Date:06/11/2018 06:59 AM
Subject:Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4
Sent by:gpfsug-discuss-boun...@spectrumscale.org



Thanks Simon. Do you mean you pinned the minor release to 7.X but yum
upgraded you to 7.Y? This has just happened to me:

[root@ ~]# subscription-manager release
Release: 7.4
[root@ ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 7.5 (Maipo)

Granted I didn?t issue a yum clean all after changing the release however
I?ve never seen this happen before.

Anyway, I need to either downgrade back to 7.4 or upgrade GPFS, whichever
will be the best supported. I need to learn to pay attention to what kernel
version I?m being updated to in future!

Cheers
Richard

From: gpfsug-discuss-boun...@spectrumscale.org
 On Behalf Of Simon Thompson (IT
Research Support)
Sent: 11 June 2018 11:50
To: gpfsug main discussion list 
Subject: Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4

We have on our DSS-G ?

Have you looked at:
https://access.redhat.com/solutions/238533


?

Simon

From:  on behalf of "Sobey,
Richard A" 
Reply-To: "gpfsug-discuss@spectrumscale.org" <
gpfsug-discuss@spectrumscale.org>
Date: Monday, 11 June 2018 at 11:46
To: "gpfsug-discuss@spectrumscale.org" 
Subject: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4

Has anyone ever used subscription-manager to set a release to 7.4 only for
the system to upgrade to 7.5 anyway?

Also is 7.5 now supported with the 4.2.3.9 PTF or should I concentrate on
downgrading back to 7.4?

Richard___
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
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Message: 2
Date: Mon, 11 Jun 2018 15:01:48 +
From: "Jeffrey R. Lang" 
To: gpfsug main discussion list 
Subject: Re: [gpfsug-discuss] RHEL updated to 7.5 instead of 7.4
Message-ID:




Content-Type: text/plain; charset="us-ascii"

Yes, I recently had this happen.

It was determined that the caches had been updated to the 7.5 packages,
before I set the release to 7.4/   Since